Upwork home
Sign up
Secondary

Hire the best Oracle Real Application Clusters (RAC) specialists

Check out Oracle Real Application Clusters (RAC) specialists with the skills you need for your next job.
Hire freelancers
  2. Development & IT Talent
  3. Database Administrators
  4. (Current) Oracle Real Application Clusters (RAC) Specialists
  • $30 hourly

    • 5.0/5
    • (31 jobs)
    Oracle : - Having rich experience in Oracle Database Installation, upgrades. - install and setup high availability e.g. RAC , DG , GG - Rich experience in migration from one platform to another .\ - Rich experience in migration from on-prem to AWS/Oracle cloud . - Experience in AWS DMS - Setup the backup and recovery standards. - DB and query tunning. - troubleshoot performance issues - Automation using shell/batch/python scripting - debugging users issues . - Automate repetitive task using python/shell/batch script. - Having fair hands on automation using Ansible for Oracle DBA repetitive task. Migration: =========== - Oracle EE/SE to postgres AWS RDS using AWS SCT & DMS services - Oracle EE/SE to Oracle Cloud using datapump. - Oracle EE/SE to MariaDB using Goldengate. - Migration from one platform to another platform Automation: good in shell scripting , batch , python and ansible. recently completed oracle grid and rdbms installation automation using Ansible . Good experience in upgrades and performance tunning. Experience DBA devops and automation expertise. Postgres : ======= - Installation, upgrade minor and major - AWS Auroa RDA - postgres - troubleshooting - performance analysis -
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Performance Optimization
    Cloud Migration
    Oracle Database Administration
    Oracle Data Guard
    Oracle Upgrade
    Oracle RAC
    Amazon RDS
    Linux
    Database Administration
  • $60 hourly

    • 5.0/5
    • (77 jobs)
    I am a certified professional with unique skillset and profound knowledge of DBA, Solution Architecture, SysOps and DevOps. With over 10 years of hands-on experience, I am designing, building, managing and optimizing various databases and environments for Startups, SMBs and Fortune 100 Enterprises from different industries. Reviews have it! ✅ DBA Expertise: 𝐃𝐁 𝐀𝐝𝐦𝐢𝐧𝐢𝐬𝐭𝐫𝐚𝐭𝐢𝐨𝐧: Oracle 9i, 10g, 11g, 12c - 19c on premise and in Cloud, MS SQL, PostgreSQL, MySQL, SQL Server, and more. 𝐂𝐥𝐮𝐬𝐭𝐞𝐫𝐰𝐚𝐫𝐞: Automatic Storage Management (ASM), Real Application Clusters (RAC) 𝐎𝐫𝐚𝐜𝐥𝐞 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐞𝐝 𝐒𝐲𝐬𝐭𝐞𝐦𝐬: Exadata, ZDLRA, Exalogic, ODA 𝐌𝐢𝐝𝐝𝐥𝐞𝐰𝐚𝐫𝐞 𝐚𝐧𝐝 𝐄𝐑𝐏 𝐚𝐝𝐦𝐢𝐧𝐢𝐬𝐭𝐫𝐚𝐭𝐢𝐨𝐧: NetSuite, Oracle E-Business Suite, Weblogic Server, Apache Tomcat, Glassfish, OBIEE, Discoverer, Fusion Middleware, OAM/IDM 𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞-𝐜𝐥𝐚𝐬𝐬 𝐁𝐚𝐜𝐤𝐮𝐩, 𝐑𝐞𝐜𝐨𝐯𝐞𝐫𝐲 𝐚𝐧𝐝 𝐑𝐞𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧: RMAN, Dataguard, Golden Gate 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭, 𝐒𝐜𝐫𝐢𝐩𝐭𝐢𝐧𝐠, 𝐚𝐧𝐝 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧: bash, SQL, PL/SQL, Python 𝐂𝐥𝐨𝐮𝐝 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬: Oracle Cloud, AWS, Azure 𝐒𝐲𝐬𝐭𝐞𝐦 𝐀𝐝𝐦𝐢𝐧𝐢𝐬𝐭𝐫𝐚𝐭𝐢𝐨𝐧: Unix and Linux, Windows (on premise or in Cloud) ✅ DevOps, SysOps Expertise: 𝐒𝐲𝐬𝐭𝐞𝐦 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠: Scalable, secure, and highly available designs tailored to business needs. 𝐒𝐲𝐬𝐎𝐩𝐬 & 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞: Managing virtual machines, containers, storage, backup, migration, networking, and databases. 𝐃𝐞𝐯𝐎𝐩𝐬 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧: CI/CD, infrastructure as code (IaC), tools like Jenkins, GitLab CI/CD, Azure DevOps, etc. 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 & 𝐂𝐨𝐦𝐩𝐥𝐢𝐚𝐧𝐜𝐞: Data encryption, access control, IAM, GDPR, HIPAA, PCI-DSS compliance. Choosing me as your IT Architect, DBA, SysOps, and DevOps Engineer means you gain a trusted partner who will go the extra mile to deliver exceptional results and help your organisation thrive. Let's discuss your requirements and get you the best solution. Contact me today!
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Git
    Kubernetes
    Python
    Enterprise Software
    Linux
    Oracle E-Business Suite
    Oracle Cloud
    Amazon Web Services
    Azure DevOps
    Cloud Architecture
    Database Architecture
    Solution Architecture
    Database Administration
    SQL
    Oracle Database
  • $45 hourly

    • 5.0/5
    • (6 jobs)
    • Excellent working knowledge of Oracle RDBMS 9i\10\11g • Excellent working knowledge of Oracle RAC • Excellent working knowledge of Oracle Forms • Excellent working knowledge of SQL 2000\2005\2008\2012 • Experience working in other RDBMS databases like Mysql and Postgresql • Experience working with NOSQL • Experience using a scripting language to automate tasks • Excellent working knowledge of SQL High Availability features • Experience of performance and tuning optimizing SQL DB’s • Experience of monitoring and alerting tools for DB’s
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Oracle Data Guard
    Oracle APEX
    Vertica
    Oracle RAC
    Microsoft SQL Server Administration
    Oracle Database Administration
    MySQL
    PostgreSQL
  • $60 hourly

    • 5.0/5
    • (8 jobs)
    Looking for an Oracle DBA to administer, support and optimize your DB (10g,11g,12c,18c,19c) and query performance? I have vast experience managing; - Oracle Engineered Systems: Supercluster, ZFS Storage Appliance, Exadata - Availability; RAC, ASM - Replication; Data Guard, Goldengate, DBVisit - OS; Solaris, Red Hat, CentOS, OEL - Ldoms for applications, SOA and Middleware (OLVM) - Monitoring: OEM 12c/13c, Zabbix
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Oracle Patching
    Oracle GoldenGate
    Oracle E-Business Suite
    Oracle Data Guard
    Oracle OBIEE Plus
    Solaris Administration
    Oracle RAC
    Oracle Exadata
    Oracle Cloud
    Oracle PLSQL
    Database Security
    Database
    SQL
    Database Design
    Database Maintenance
  • $30 hourly

    • 5.0/5
    • (3 jobs)
    As a certified and experienced Oracle DBA and AppsDBA with 11 Years of Experience, I am able to perform all levels of database maintenance and am fully qualified to do Oracle updates as well. Technically‐sophisticated professional with extensive experience in updating server security, executing routine back‐ups, and designing and implementing tests of the system to address issues with accessing data. Adept at leading the planning, designing, developing, testing, and deploying efficient solutions within Oracle EBS system, in order to satisfy strategic, financial, and operations needs of the organization. Skilled in planning and managing successful projects, mitigating risks, controlling costs, and directing project teams. Instrumental in monitoring the routine maintenance of the system, implementing the ERP systems, and approving the budget. Proven success in analyzing business processes/process re‐engineering and recommending solutions. Deft at establishing IT service continuity management strategies, disaster recovery plans, and associated test procedures of each critical functional area of the organization.
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Oracle RAC
    Windows Server
    Oracle Fusion Middleware
    Linux System Administration
    Oracle WebLogic Server
    Oracle GoldenGate
    Oracle Data Guard
    System Administration
    Oracle Reports
    Oracle E-Business Suite
    Oracle Exadata
    Oracle Database Administration
    Database Administration
    Oracle Database
    Oracle Cloud
  • $75 hourly

    • 5.0/5
    • (434 jobs)
    ✅ 🔻TOP-RATED PLUS🔻 freelancer on UpWork ✅ Senior DBA and developer ✅ Senior database architect ✅ Business solutions and BI expert ✅ 15+ years of experience Senior Database Developer & DBA. Consultant and certified database administrator and developer with 15+ years of experience working with: MS SQL Server 2000 - 2019 all versions and editions, Azure SQL, MySQL, MS Access, Amazon RDS, PostgreSQL, PowerShell, etc... Database performance tuning expert and advisor. Business solutions & BI consultant as Senior Developer. With many years of extensive experience in IT, finance, healthcare, and other enterprise-level companies in various roles. My objective is to use my expert-level skills and deep expertise to bring creative and top-level solutions to businesses that require professional support, development, or consultancy.
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Amazon RDS
    Database Programming
    Microsoft SQL Server Programming
    Microsoft Azure SQL Database
    Microsoft Power BI
    SQL Programming
    Microsoft SQL Server Administration
    Database Maintenance
    MySQL
    Microsoft SQL Server
    Amazon Web Services
    SQL
    Transact-SQL
  • $20 hourly

    • 4.9/5
    • (169 jobs)
    I will design and develop oracle application as per your requirement within shortest possible time. I'm an Oracle Certified Professional (OCP) and I've strong professional experience & expertise of database project design and develop in Oracle I have over 7 years experience in the area of ​​IT: systems analysis, solution design, development, quality testing and shift control to production environment. Experience in analysis and solutions development in DB Oracle (PL / SQL) and SQL Server. Experience in user support. Area of Specialization ============== ✔ Oralce PL/SQL Programming ✔ Oralce SQL Programming ✔ Oracle Forms(All Types) ✔ Oracle Reports(All Types) ✔ Database Designing ✔ Query Handling ✔ Database Functions ✔ Database Procedures ✔ Database Packages ✔ Database Views ✔ SQL,PL/SQL complex queries ✔ Graphical User Interface (GUI) ✔ Data Guard Configuration ✔ RMAN Active Duplication ✔ Database Performance Tuning ✔ RMAN backup and recovery ✔ Oracle Forms and Reports Developer (6i, 10g,12c) ✔ Oracle Web Logic Server 12c ✔ Oracle Fusion Middle-ware 12c ✔ Windows, Linux, AIX Operating System ✔ Real application cluster(RAC) ✔ Database migration and upgrading ✔ Linux shell script ✔ Oracle automatic storage(ASM) ✔ SQL Server ✔ Apache tomcat ✔ Http server, haproxy, Lvm linux During my work experience I have Design multiple system in Oracle like -Hospital Management System, -Human Resource Management System, -Inventory Management System, -Fabric Management System, -Accounts Management System, -Order Management System, -Point Of Sale, -Export Management System, -School Management System. I have gained excellence in the field of systems, controls and analysis. My experience in automating manual tasks has been proven to be highly effective. I have also gained experience in system/process design and implementation. My passion is to help my clients solve financial issues and deliver the best quality of work they require. I look forward to a long-term relationship with my clients. Hope to hear from you soon!
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Microsoft Power BI
    WordPress Development
    Prototype JavaScript Framework
    Oracle Forms
    Oracle RAC
    Oracle Database Administration
    Data Mining
    Mobile App
    Database Programming
    Oracle Programming
    Oracle APEX
    Linux System Administration
    Oracle PLSQL
    Apache Tomcat
    Oracle Database
  • $27 hourly

    • 5.0/5
    • (82 jobs)
    I am in web development for the past 24 years. I love to work on Business processes and workflow automation. Typically My Clients hire me if they want to - * Convert a complex spreadsheet-based business process into an intelligent cloud-based software * Automate a manual business process * Build a custom CRM or custom ERP system * Build a web portal or mobile application for their Internet-based business ideas Over the last 24 years, I have been working on Web Application Development using various technologies like Laravel, CakePHP Framework, Zend Framework, and other PHP and open source technologies like Ionic, AngularJs for Mobile Application development. My Expertise is in developing Web Products or Ideas, Developing CRM Systems or other Complex Web or Mobile Applications. During this tenure, I've worked in various business verticals like - Medical, Healthcare and Wellness, Manufacturing, Placements and Recruitment, IT and ITeS, Real Estate, Travel, Pet Care Industry, Entertainment, Back-office workflow, and CRM, etc. If you are looking for someone - - who can be more than a developer like a Fellow Team Member - who give you suggestions or ideas to improvise your IT project, - provide usability inputs - And in general someone reliable for all your technological needs, then I can assure you we will enjoy working together! Following are a few areas of my expertise - 1] Node.js, Reactjs, AngularJs, Laravel, CakePHP, CodeIgniter, Zend Framework, ExpressionEngine CMS, Responsive Web Design 2] SaaS or Software as a service or Cloud-based web application development 3] Custom CRM and ERP Development 4] Web Idea development and incubation (web portal development, web services development) 5] Web-based application for Business Process Automation 6] Enterprise web application development 7] Company Intranet development My objective is to provide you with reliable software development services and build a long-lasting relationship, which you can count on even after we finish working together.
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Applicant Tracking Systems
    Node.js
    React
    MERN Stack
    Full-Stack Development
    ERP Software
    CRM Software
    Salary Survey
    CakePHP
    Business Analysis
    Customer Relationship Management
    Laravel
    Product Development
    Web Development
    SaaS
  • $80 hourly

    • 4.8/5
    • (115 jobs)
    My extensive experience in Cloud,Database and CyberSecurity over the past years include the following: 1). CISSP; Information security, Cybersecurity,Compliance 2) Information Security/Vulnerability Testing 3). Oracle Performance Tuning 4). Oracle Database technologies, SQL tuning,flashback, RMAN, RAC and others 5). Database System Security Scans and Vulnerability testing 6). Oracle Certified Professional 10g and 11g, 12c 7). Oracle Certified Database Security Implementation 8) AWS Solutions/Administration/EC2/S3/Cloud 9). HiTRust Aware/PCI DSS Aware 10). Microsoft Certified: Azure Fundamentals Please let me know if you have any questions.
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    PCI
    Data Protection
    Oracle Database Administration
    Linux System Administration
    Security Operation Center
    Security Engineering
    Oracle Database
    Information Security Governance
    Certified Information Security Manager
    PCI DSS
    Security Infrastructure
    Database Administration
    Network Penetration Testing
    Oracle Performance Tuning
    Information Security
  • $25 hourly

    • 4.8/5
    • (59 jobs)
    I am an experienced and confident (Network/System) engineer with more than 15 years' experience in a variety of network environments. Expert in: *** Operating Systems: 1- Windows Servers 2003/2008/2012/2016/2019. 2- Linux Centos/Ubuntu. *** Virtualization Technology: 1- Vmware. 2- Proxmox. *** Networking: 1- Cisco. 2- Teltonika. 3- Mikrotik. 4- Ubiquity & Unifi. 5- PFsense & OPNsense. 6- Fortigate. 7- Netgear. *** VPN 1- OpenVPN. 2- Softether. 3- WireGuard
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Virtual Private Server
    Python
    System Administration
    cPanel
    Mikrotik RouterBOARD
    Linux System Administration
    Proxmox VE
    Network Administration
    Virtualization
    Virtual LAN
    Zabbix
    Network Engineering
    VPN
  • $70 hourly

    • 4.3/5
    • (4 jobs)
    Lead DevOps DBA, Certified Scrum Master, Oracle/MS SQL Database Administrator Experienced & highly motivated IT professional with extensive knowledge of Oracle (Data Guard & Grid Infrastructure) 21c/19c/18c/12c/11g/10g/9i/8i, PostgreSQL 13.10 /12.2 /9.6, MSSQL 2005/8/12/14/19, Oracle Cloud (OCI), Amazon RDS, Microsoft Azure, Google Cloud, Exadata Machine X2/3-8, Golden Gate 11g/12c & Python 3.6. Recognised mentor and coach for new team members. Strong client relationship building skills. CAREER SUMMARY: • ITIL v4 & Scrum Master with over 26 Years of experience in Oracle Database Administration • DBA with a depth knowledge of infrastructure projects, operations including operating systems, networking, shared storage, virtual machines & cloud infrastructures • Oracle Autonomous Database Cloud 2020/2021 Certified Specialist • Oracle Cloud Database Migration and Integration 2021 Certified Specialist • Oracle Certified Professional (OCP) 12c/11g/10g DBA • Oracle RAC Certified Administrator 10g • Oracle Exadata 11g Certified Implementation Specialist • Oracle Enterprise Linux Certified Associates • Oracle Certified SQL and PL/SQL programmer • AWS Certified Cloud Practitioner • Six Sigma Green Belt Certified Professional. • Sun Certified Programmer for the Java 2 Platform 1.4 • Cloudera Certified Administrator for Apache Hadoop (CCAH) (License: 100-013-767) • PCAP – Certified Associate in Python Programming (PCAP-31-03) • Experience with AWS, GCP, EC2/Compute Engine/Bare Metal/VMWare, RDS PostgreSQL/Oracle, • Exadata (Database Machine) Administration for 10 x X3-8 Full Rack Exadata Racks (Prod, Dev & Test), Configuration, & Patching all Components • Architected & Setup 60TB 11g Oracle RAC HA & DR database using Data Guard & Golden Gate • Design approach & migrated OLTP 11g DG 8TB to 12c DG database using Golden Gate • Successfully migrated OLAP 10g RAC to 11g RAC database of total size of 10 TB • Architected & Integration of Oracle 12/19c Database with Oracle Unified Directory (OUD) & LDAP • Support large data database such as 80TB in size, 100 Billion row tables, 3 TB Arch log per day. • Successfully upgraded 10g/11.2/12.1/19c Oracle database to 12.2/19c/21c using Manual Method • Integration of RMAN with Snapcenre, IBM SPP/SP/TSM, EMC Legato Networker Mgr & DD Boost • Performance Tuning of SQL Queries, Database, Application & Performance Monitoring • Supported Oracle & SQL Server 2000/2K5/2K8/2012/14/19 databases on Windows 2003 to 2019 • Design & Configured HA Oracle Enterprise Manager 13c/12c Cloud Control (OEM 12c) • Strong knowledge and Experience using Ticketing tool SM9, ServiceNow & JIRA (S/w dev tool) • Strong knowledge of AWS, EC2 & RDS instances, Data Migration to Cloud & AWS Console Expert. • Strong knowledge of Hadoop/HDFS/Oracle Cloud Infrastructure, Data Migration & OCI Console • Strong skills in Linux/Unix system administration (RHEL) • Strong knowledge of VM Ware, Load Balancer, DNS, Firewall & Networking • Experience working Data Warehousing, ETL/interface configuration and management. • OLTP/OLAP Data modelling, logical & physical design & Implementation using ER Win & Studio • Strong Data Analysis Skill and writing PL/SQL Code utilities for data retrieval and load • Writing Database Security baselines, remediation and data hardening. • Experience working with TDE, Data Compression (EHCC, OLTP), Smart Scan • Excellent communication, writing standards guide, handover/knowledge documentation
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    High Availability and Disaster Recovery
    Oracle Performance Tuning
    Oracle Programming
    Oracle GoldenGate
    Oracle Upgrade
    Oracle PLSQL
    Oracle APEX
    Oracle Patching
    Oracle Data Guard
    Oracle Exadata
  • $15 hourly

    • 3.5/5
    • (10 jobs)
    Hello, Myself, Debasis from Sett Consultant, Kolkata, India and we are providing outsourcing services on Oracle APEX mainly. Our Background: We started our journey from 2016 with 4-5 people, now we have a strength of 45 resources including 20 Oracle APEX resources. We are working with a few clients based in the USA, UK, UAE, Israel, Mexico, Malaysia, India etc. Executive Summary: We have vast experience to work on Business Oriented APEX Applications. Last 8 years we have been providing solutions to our clients on Oracle APEX. We always believe in long-term relationships. Scope of Work: Oracle APEX (4.2 to 23.1) SQL - PL/SQL UI Design RESTful Web Service 3rd party API Integration Oracle Forms to APEX Migration BI publisher, APEX office print(AOP), Jasper Report PWA Multi-language Dynamic Workflow Approval Process Custom Theme Oracle Cloud Pricing: Senior Resources (5+ years of experiences) : 15 USD per hour / 2000 USD per month Junior Resources (upto 5 years of experiences) : 12 USD per hour / 1700 USD per month ** Fixed cost depends on client requirements. Proposals: We can assign multiple resources for your projects, they can work dedicatedly on your projects. Attachments: PFA our presentation of Oracle APEX. Let us know when you will be available for initial discussion. We can show you some Demo Applications. We are waiting for your positive response. Thanks, Debasis Kundu
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Oracle Database Administration
    Oracle Fusion Applications
    Oracle Cloud
    Web Service
    Oracle Integration Cloud Service
    Oracle PLSQL
    Oracle APEX
    User Interface Design
    RESTful API
    JavaScript
    HTML5
    CSS
    API Integration
    jQuery
  • $35 hourly

    • 5.0/5
    • (37 jobs)
    Oracle Database 12c Certified Oracle Database 11g Certified Oracle Database 10g Certified Oracle Database 8i Certified Oracle Apps DBA Certified R12 Oracle Certified Specialist (General Ledger , Payable) Working Experience Oracle DBA / Head of I.T for more than 25 years
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Database
    Oracle Database Administration
    Oracle Reports
    Oracle Forms
    Database Design
    SQL
  • $80 hourly

    • 5.0/5
    • (40 jobs)
    I specialize in Linux-based database systems. I hold the qualifications of Bachelor of Science (computer science), and have also attained RHCE (RHEL 6.0, 2012), and OCP (RDBMS, 10g). What I can offer clients is a professional solution that will meet requirements. Top Skills: * Linux systems administration: RedHat, CentOS, Ubuntu * RDBMS administration: Oracle and RAC, MySQL * RDBMS design and programming: PL/SQL, SQL performance tuning * Systems Programming: bash, Perl Comprehensive Skills: * Web Infrastructure Design and administration: Apache, Tomcat, Squid, JVM * Virtualization: Xen, KVM, VMWare Server * Firewall: Linux IPTables, Firewalld * Mail Servers: Sendmail, Postfix * Software development: Java (SE, Spring MVC), PHP, HTML, CSS, JQuery, Github, Maven, Visual Basic * Cloud: Microsoft Azure architecture design and implementation, Linode, Digital Ocean, AWS and S3 * Monitoring: Nagios, Big brother, Cacti, Zabbix * Hadoop big data
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Oracle PLSQL
    Red Hat Certified Engineer
    Oracle RAC
    Linux System Administration
    Bash Programming
    MySQL Programming
    Java
    Perl
    MySQL
  • $45 hourly

    • 4.8/5
    • (59 jobs)
    Database troubleshooting: startup issues, data file recovery, performance and tuning. I can discover a database performance issue in 15 minutes and resolve the performance issue within in an hour. Database Administration both on-primes and cloud (Oracle, PostgreSQL, MS SQL Server, MySQL, MariaDB, AWS, Azure, Google Big query ...) Database tuning and analyzing: SQL slow queries tuning, guideline developers to enhance SQL queries applying with indexes and writing complex queries. Tuning memory allocation, initial parameters, I/O and all database workload problems. Troubleshoot for database problems in real-time. Data Architecture: Designing database architecture and data policies. Data Warehouse Architecture (Oracle/SAP BW): Designing data warehouse data model and data warehouse architecture. Data analysis and Business Intelligence tool (Power BI, Tableau, Looker, MS Excel Pivot table). Programming language (VBA, Visual Basic, Oracle PL/SQL, MS SQL procedure, MySQL store procedure)
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Data Engineering
    Performance Optimization
    Power Query
    Data Analysis Consultation
    Query Tuning
    Database Maintenance
    Data Extraction
    Microsoft SQL Server Administration
    Oracle Database Administration
    Microsoft Power BI
    Oracle Performance Tuning
    Data Analytics
    Database Architecture
    Database Modeling
    MySQL
    PostgreSQL
    Oracle Database
    Database Design
    Database Optimization
  • $40 hourly

    • 4.9/5
    • (46 jobs)
    Over my 11-year career, I’ve developed a skill set directly relevant to the Database Administrator role you are hiring for, including: + Database Administration Oracle 19c/12c/11g - MS SQL Server 2008/2012/2016 - MySQL 5.1 to 8 - MongoDB , AWS RDS + Data Recovery + Disaster Recovery + Oracle Enterprise Cloud Management 13c + Golden Gate + Oracle Exadata + Oracle RAC + Oracle Data Integrator + Oracle Business Intelligence + Oracle Identity & Access Manager + Auditing + High Availability + SQL Server AlwaysON + SQL Server Integration Services + SQL Server Reporting Services + Power BI + MySQL Replication + MongoDB Replica Sets + Migrations (Oracle , SQL Server , MySQL , MongoDB , Cross-platform) + Oracle Virtual Box OVM + AWS RDS + AWS DMS + AWS SCT Core Databases: Oracle 19c/12c/11g , Oracle Exadata , Oracle RAC, High Availability , MS SQL Server 2008/2012/2016 , MySQL 5.1 to 8 , MongoDB. AWS RDS Task Automation / Scripting : Tasks automation using OS scheduling on RHEL and Windows , Shell Scripting. Database Business Continuity : Standby Database using DataGuard , GoldeGate , Cluster Database using oracle RAC , MS SQL Server AlwaysOn , MySQL Replication , MongoDB Replica Sets. Database Security Hardening : Security hardening the database (listener hardening , database profiles , DB roles/privs, auditing , restricting remote admin access , etc.) , Backup encryption. Database Performance Tunings : Using tools like ASH , AWR snapshots , ADDM , OEM13c , etc. Backup / Restore : Backup / restore database activities using RMAN , Data pump , mysqldump & mysqlpump , mysqlbinlog , mongodbdump Operating Systems : Redhat Enterprise Linux (RHEL) , Windows Server (routine OS related tasks , required for day-to-day database administration).
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Oracle Upgrade
    Oracle RAC
    Oracle Database Administration
    Disaster Recovery
    Oracle Performance Tuning
    Oracle Data Guard
    High Availability and Disaster Recovery
    Microsoft SQL Server Administration
    Backup & Migration
    Data Recovery
    Database Optimization
    MySQL
    Database Administration
    Microsoft SQL Server
  • $18 hourly

    • 5.0/5
    • (1 job)
    As an Oracle APEX Developer with over 9 years of experience, I specialize in creating robust, scalable, and user-friendly web applications. My expertise includes PL/SQL programming, database design, and seamless integration of third-party APIs. I have successfully delivered 20+ projects across various industries, enhancing business processes and user engagement. Let’s collaborate to transform your ideas into efficient solutions.
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    MongoDB
    PostgreSQL
    API Integration
    CSS 3
    HTML5
    JavaScript
    Database Programming
    Database Design
    SQL
    Oracle PLSQL
    Oracle APEX
  • $75 hourly

    • 4.9/5
    • (85 jobs)
    ⭐⭐⭐⭐⭐ "I hired Shafir as a SQL Server DBA and Azure expert to help optimise our database and Azure app instances. The improvements he made were incredible. Our services ran at 10 times the usual speed. I cannot recommend him enough. He’s a genius!" Paul S Schoop LTD 📣 With over 11 years of professional experience, I am a skilled SQL Server freelancer on Upwork, specializing in SQL Server DBA, database development, and business intelligence development (Data Engineer). 🎯 I've successfully resolved customer-facing SQL Server bottlenecks and achieved significant performance enhancements for Fortune companies and renowned organizations, including the following to illustrate some of them: ☑️ AAA Communication Inc. USA (~14 Million Estimated Revenue per Year) ☑️ NeTex Consulting. USA ☑️ Cloud Retailer. USA (Over 1 Million Invested on Upwork) ☑️ Selectel Wireless. USA ☑️ Jevin Inc. USA ☑️ Boender & BeuteI GmbH, Germany ☑️ Access IT, USA Extensive Experience as a SQL Server DBA (Versions 2000 - 2019) methodically identifying and resolving complex underlying causes of Microsoft SQL Server problems, using a vast variety of techniques and tools. I have solved numerous show-stopping SQL Server Performance problems, as well as often re-engineered immensely complex designs and code, providing significantly improved performance. Expert Level ability with Data Extraction, Transformation, and Loading (ETL) from numerous heterogeneous data sources. I pride myself in my ability to intuitively gather, interpret and understand your requirements, as well as develop intuitive and creative Business Intelligence Solutions using the full MSBI stack (Power BI, SSAS, SSRS, and SSIS). ⭐ Here's what I can offer to your project ⭐ ✔️ Top-notch experience in utilizing SQL Server across all versions from 2000 to 2019, as well as on various cloud platforms. ✔️ Top-notch experience in all versions of SQL Server (2000 - 2019) for corruption repair and recovery. ✔️ Extensive experience handling large-scale enterprise transactional databases. ✔️ Expertise in data security best practices, particularly regarding PII and PHI data. ✔️ Proficient in swiftly diagnosing SQL performance issues and pinpointing query bottlenecks. ✔️ Expertise in ETL development using SSIS for data warehouses and Power BI databases. ✔️ 24/7 reliable communication: keeping you constantly informed of project status. ✔️ A dedicated professional committed to your success and adding value to your business. ⭐ Why I stand out from other freelancers. ⭐ ✔️ Client Reviews: My priority is delivering value and building trust with every client. ✔️ Over-Delivering: This principle is central to my freelance work. I aim to exceed expectations and take pride in leaving clients saying "WOW" ✔️ Responsiveness: Highly responsive, ensuring all lines of communication are always open with my clients. ✔️ Resilience: Reach out to any of my current or former clients and inquire about my ability to tackle challenges head-on and find effective solutions for any issue they face. ✔️ Kindness: A core value that permeates every aspect of my life. I treat everyone with respect, approach all situations with empathy, and genuinely strive to enhance my clients' experiences. 🏆 Testimonials and feedback from prominent clients🏆 The client reviews below, also featured in my work history section, highlight the quality of work and value you can expect when working with me. ⭐⭐⭐⭐⭐"I hired Shafir to repair a corrupted SQL database. We used 2 other SQL engineers prior to meeting Shafir and also attempted a repair using a database repair application which also failed. We were at a point where nothing was working and we were coming to the conclusion that this was not repairable as there were too many errors. Shafir was very confident that he could repair the database and after watching him work for just a few minutes I immediately felt some hope of a successful repair. After working on the database for several hours Shafir managed to repair the database and get it working better than it was before. Working 20 years in IT I had never seen anything like it. Shafir is very professional and truly an SQL expert. I would highly recommend Shafir for any SQL project. Thank you." - Dean Cutajar, Director - Access IT ⭐⭐⭐⭐⭐ "Amazing experience! Shafir did the impossible. He was able to take a highly corrupted database and bring it back to life with zero data loss. Once repaired, he optimized the database and has it running better than it was before the corruption. He is responsive and easy to work with. Highly recommended. Will use again in the future." Jeff Cross 303 Networks Inc 🙋🏼♂️I am eager to work with you, to provide reliable, consistent, and High-Level solutions to design/development challenges. Please contact me, so we can discuss how we can work together to FULLY meet your Business Needs!
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    System Administration
    Microsoft Azure
    SQL Server Integration Services
    Database
    SQL Programming
    Microsoft SQL Server Programming
    Microsoft Azure SQL Database
    Data Warehousing
    Business Intelligence
    Microsoft SQL Server Administration
    Database Maintenance
    Performance Optimization
    Microsoft SQL Server
    SQL
    Database Administration
  • $25 hourly

    • 5.0/5
    • (28 jobs)
    With over 18 years of experience in Full-Stack Development (MERN, Python), AI, and Data Engineering, I have a proven track record of building and scaling web applications, data pipelines, and real-time systems for enterprise-level customers. As a Top-Rated Plus freelancer with a 100% Job Success Rate and over $50K earned on Upwork, I specialize in MERN stack development, API integration, and cloud infrastructure to deliver scalable, high-performance ERP applications and complex systems. Key Expertise: As a MERN Stack Developer, I specialize in React.js and Node.js with expertise in designing scalable service APIs (REST, SOAP, GraphQL, Microservices) hosted on cloud environments like AWS. I excel in performing code reviews, ensuring optimal performance, and writing reusable code that enhances scalability and security. Full-Stack Development Expertise: Expertise in React.js (Hooks), Node.js, MongoDB, Express.js, and Apollo for front-end and back-end development. Experience building and optimizing secured backend APIs consumed by multiple applications (web and mobile). Developing highly scalable APIs using GraphQL, RESTful services, and Microservices architecture. Building complex ERP systems with enterprise-level clients, ensuring performance, scalability, and security. Experience with Socket.IO for real-time communication. Cloud Infrastructure: I bring hands-on experience with AWS services like EC2, S3, RDS, Lambda, ElasticSearch, API Gateway, and more. My proficiency in cloud infrastructure ensures that applications are designed, deployed, and managed in a highly scalable and secure manner. Cloud and DevOps Expertise: AWS EC2, S3, Lambda, ElasticSearch, Elastic Beanstalk, API Gateway, RDS, SQS, EC2 Container Service for cloud environments. CI/CD pipelines with GitLab, Jenkins, and automated testing to deliver reliable and efficient software solutions. Security implementation using OAuth 2.0, JWT, and SSL/TLS. Responsibilities & Key Contributions: As part of large-scale projects, I provide code review services to ensure that the code meets industry standards and best practices. I also contribute by fixing bugs and implementing new modules as needed to ensure smooth delivery and continuous improvement of the application. Advanced Skills: Writing reusable code and optimizing applications for scalability and performance. Experience with testing frameworks and implementing automated testing platforms like NUnit, JUnit, and others. Deep understanding of back-end systems using Koa, Oracle, Redis, and MongoDB. Ensuring best practices in UI/UX design and responsive design using React.js with Tailwind CSS and Material-UI. Experience & Education: Bachelor’s in Computer Science with a deep technical background in full-stack development. Over 18 years of experience in building, scaling, and optimizing full-stack web applications for enterprise-level customers. Recent Success: I’ve successfully completed 28+ projects on Upwork, earning over $50K in revenue, with a reputation for delivering scalable, high-performance ERP systems and enterprise-grade solutions on time. Skills & Expertise: Front-End Development: React.js, Redux, HTML5, CSS3, Tailwind CSS, Material-UI Back-End Development: Node.js, Express.js, Apollo, Koa, MongoDB, Redis, Oracle API Development: REST, GraphQL, Microservices Cloud: AWS (EC2, S3, Lambda, ElasticSearch, RDS, API Gateway, Elastic Beanstalk) DevOps: CI/CD pipelines (GitLab, Jenkins), Docker, Kubernetes Testing & Security: Automated testing platforms, OAuth 2.0, JWT, SSL/TLS I am seeking a long-term, full-time contract opportunity where I can bring my expertise in the MERN stack to develop complex applications, perform code reviews, and contribute to the success of your enterprise-grade projects. Let’s work together to build robust, scalable, and efficient solutions that drive business success!
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    REST API
    Redis
    PostgreSQL
    OpenAI API
    Tailwind CSS
    Amazon Web Services
    Database Architecture
    API
    Web Application
    MongoDB
    Node.js
    Redux
    React
    API Integration
    JavaScript
  • $12 hourly

    • 4.9/5
    • (1 job)
    Hey there! I'm deeply immersed in the world of database management, where every query holds the potential to uncover valuable insights. With a strong foundation in SQL, MySQL, and Oracle, I ensure smooth operations and optimal performance. From crafting efficient database designs to safeguarding data integrity, count on me to maximize the potential of your information assets
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Database Architecture
    Database Administration
    Database Integration
    Data Migration
    Oracle APEX
    Database
    Database Management System
    Troubleshooting
  • $70 hourly

    • 5.0/5
    • (8 jobs)
    Any kind of services for your existing and future Oracle Databases and Applications: - 10g, 11g, 12c, 18c, 19c - Oracle e-Business Suite - Oracle Access Manager and Single Sign-on - Oracle Business Intelligence - Oracle Weblogic - Oracle Enterprise Manager Cloud Control - Oracle Cloud Infrastructure - Oracle GoldenGate
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Oracle E-Business Suite
    Oracle RAC
    Oracle PLSQL
    Oracle Applications
    Oracle Patching
    Oracle OBIEE Plus
    Oracle Data Guard
    Apache Tomcat
    SQL
  • $25 hourly

    • 5.0/5
    • (36 jobs)
    • More than 15 years of IT experience, specialized in Database Technologies Oracle and MySQL. • IT Telecom Sector Experience, Provide Technical Consultancy for Database and IT Infrastructure, Assessment and Auditing for Mobile Operators in the Middle East and Africa Regions. • Skills Set: - Oracle Database Administration: database backup, recovery, performance tuning, Oracle Golden Gate, Oracle RAC and Data Guard configuration. - MySQL Administration: Performance tuning, MySQL Replication, Backup and Recovery. - Amazon Web Service Technology: EC2, S3, RDS, IAM, VPC, Route53, CloudWatch. • Certifications: - AWS Certified Solutions Architect – Associate. - ITIL® V3 Foundation Certified. - Oracle Database Administration Certified Professional.
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Cloud Migration
    Solution Architecture
    Oracle Cloud
    Amazon Web Services
    Oracle Performance Tuning
    Oracle Database Administration
    Oracle Application Server
    Oracle RAC
    Oracle Data Guard
    Oracle PLSQL
    MongoDB
    MySQL
  • $30 hourly

    • 5.0/5
    • (6 jobs)
    Systems and Services Engineer, with 12+ years of working experience. Interested in researching, administrating, debugging, tuning and developing platforms running on UNIX like Operating Systems. Able to troubleshoot, identify and solve problems in software, network or kernel layer. Always willing to learn and experiment new technologies for creating high availliability platforms, that could described as "state of the art" or "cutting edge" technology. Specialties: • Unix Like Operating Systems Specialist (Solaris / Linux ). • TCP/IP Network technology • Very deep level of knowledge on Machines hardware and OS Kernels internals. • Troubleshoot/Tune/Debug; System Services, Operating Systems • Mail Services Expert, Qmail-Ldap Specialist. • Network: Cacti/MRTG, Nagios, Cisco Netflow • Databases: PostgreSQL / MySQL / Oracle / LDAP. • Programming: Perl, Ansi C, bash, awk, sed, php etc • Internet Services: mail, http, radius, ftp, ssh, irc etc.
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    TCP/IP
    Unix System Administration
    Unix Shell
    Solaris Administration
    MySQL
    Oracle Sun Ray
    VMware Administration
    Iptables
    PHP
    C
    PostgreSQL
    Firewall
    DNS
    Perl
    Bash
  • $20 hourly

    • 5.0/5
    • (7 jobs)
    Hello I am Imran Hussain Heron. I have a total of 10 years of experience with Oracle, MySQL, and MSSQL databases. My significant experience includes: Oracle Database: Implementation and management of Oracle Database 10g, 11g R1, 11g R2, 12c, and 19c Database Backup and Recovery: Expert in RMAN and Oracle import/export High Availability Solutions: Real Application Clusters (RAC), Physical Standby (Data Guard), and Logical Standby Middleware and Infrastructure: Oracle WebLogic, Oracle Grid Infrastructure (11g-19c), and Fusion Middleware Security: Oracle Audit Vault and Database Firewall, Oracle & MSSQL Transparent Data Encryption Performance Tuning: Oracle & MSSQL performance tuning Database Upgradation & Migration: Oracle and MSSQL database upgradation and migration Disaster Recovery and High Availability: MSSQL AlwaysOn Availability Groups, Replication, Log Shipping, Mirroring, and Clustering MySQL Administration: Administration and DR implementation Additional Expertise: Oracle GoldenGate, Oracle Gateway Thank you for visiting my portfolio. Best regards, Imran Hussain Heron
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Microsoft SQL Server Administration
    Oracle Patching
    Oracle Fusion Middleware
    Oracle Data Guard
    Oracle Database Administration
    Database Management
    Oracle APEX
    Oracle RAC
    Oracle PLSQL
    Oracle Database
    Database Administration
    MySQL
    Server
    Microsoft SQL Server
    ETL
  • $53 hourly

    • 4.9/5
    • (9 jobs)
    I am a Database Administrator with 7+ years of proven professional experience in ORACLE and SQL Server. I have hands-on experience in upkeep, configure, troubleshoot, and support Oracle 11g/12c/19c, SQL Server 16/17/19 in clustered and non-clustered configurations. I have maintained regular RMAN Backups using NetApp and NetBackup technology. I am an expert in SQL tuning, performance tuning, creating indexes as necessary, and optimize poor-performing scripts in MSSQL. I have done application and database server replication and refresh from production to non-production environment as per clients' request. I also have completed database upgrades from 10g, 11g to 12c and 19c. In addition, I have excellent knowledge in Oracle Golden Gate installation, configuration, troubleshooting GG issues. Hands-on experience with SQL Server Management Studio, MYQL Workbench, and Oracle SQL Developer. I am also skilled in performing hot/cold backup and restore and recovery of existing databases from backup. I have raised dataguard on standbys and have excellent knowledge of disaster recovery. I am also a RedHat Certified RedHat 7 System administrator. I have hands-on experience in installation, configuration, maintenance, update, monitoring, performance tuning, troubleshooting, analyze and proactively monitored Red Hat systems for the Enterprise, CentOS, Ubuntu, Debian, Fedora. I can perform daily functions such as establishing new accounts, creating and resetting passwords, developing scripts, performing system backups and recovery, installing software patches and updates, setting user and group quota, adding space to the filesystems, configure and managing LVM, etc. I can configure Nagios, Zabbix to monitor Linux systems. I have also performed the migration of Redhat Linux from physical to VMs in VMware. I am an expert in configuring IP connectivity, TCP/IP, routing, and maintaining network connectivity of servers.
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Technical Analysis
    AIX
    Database Management
    Data Recovery
    Linux System Administration
    Red Hat
    Oracle RAC
    Oracle Data Guard
    Microsoft SQL Server Administration
    Data Entry
    Microsoft Office
  • $40 hourly

    • 5.0/5
    • (5 jobs)
    Database developer with over 20 years experience in various RDBMs. For the last 8 years focused on databases used in virtual infrastructure. Specialties: - Database design and implementation for both OLAP and OLTP databases. - Database administration under Windows and Unix. - Analyzing database performance, locking and scalability problems. - Data migration, reporting and validation. For more details: shorturl.at/rsST7
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Microsoft SQL Server Programming
    Microsoft SQL Server Administration
    PostgreSQL Programming
    Database Architecture
    Oracle
    Oracle RAC
    Python
    Database Design
    PostgreSQL
  • $30 hourly

    • 5.0/5
    • (9 jobs)
    I have been working on IT industry for 10+ years. Worked as DBA on large IT project with 140+ oracle databases. I have production level installation and maintenance experience of 2 node RAC, data mirroring between two SAN using ASM, 2 node RAC database on Disaster Recovery center for SAN replication environment. I have also configured RAC-RAC and multi standby DataGuard and GoldenGate. Besides Oracle database, I have configured SQL Server 2016 cluster and replication.
    vsuc_fltilesrefresh_TrophyIcon Oracle Real Application Clusters (RAC)
    Oracle Database Administration
    Oracle Data Guard
    Oracle RAC
    SQL
  • Want to browse more freelancers?
    Sign up

How it works

1. Post a job

Tell us what you need. Provide as many details as possible, but don’t worry about getting it perfect.

2. Talent comes to you

Get qualified proposals within 24 hours, and meet the candidates you’re excited about. Hire as soon as you’re ready.

3. Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

4. Payment simplified

Receive invoices and make payments through Upwork. Only pay for work you authorize.

Trusted by

At A Glance: Oracle Real Application Clusters (RAC)

Modern computer systems commonly consist of many different components and pieces. Taking entire individual systems and stitching them together in a meaningful and efficient way is known as computer clustering. Clustering provides vast computing power for any problem that may need it without the high price tag normally associated with single systems of similar power. Oracle Real Application Clusters is a high-availability software clustering solution provided by Oracle for Oracle Database. RAC gives a distinct advantage to any business or organization that needs additional computing power when accessing a single database for web services, networking, or data analysis. RAC specialists on Upwork are available to help implement and leverage the power of Oracle RAC no matter what the need.

Oracle RAC specialists are highly trained computer technicians with experience in database management, computer clustering, and Oracle products. A RAC specialist can be available to work with you or your company on a project-to-project basis by providing consultation and resources when and where you need it most, or a specialist can work with an existing team, giving your company the edge it needs when developing and implementing a database system. Hiring a freelance Oracle RAC specialist also gives you access to a professional with working knowledge of any Oracle Database system you may already have, giving you assurance of product compatibility between Oracle Database and Oracle RAC. Oracle RAC specialists are dependable and cost-effective ways to manage high-powered database computing needs.

Top cities for Oracle Real Application Clusters (RAC) specialists in United States

Show more
Schedule a call

Looking to hire for long-term or full-time assignments? See how Full-time hiring on Upwork simplifies the process.