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Fixed-Price - Intermediate ($$) - Est. Budget: $50 - Posted
Now i have this error Caused by: org.hibernate.exception.JDBCConnectionException: Cannot open connection at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:99) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52) at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:449) at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167) at org.hibernate.jdbc.AbstractBatcher.prepareSelectStatement(AbstractBatcher.java:145) at org.hibernate.id.SequenceGenerator.generateHolder(SequenceGenerator.java:110) at org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:105) at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:121) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:210) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:195) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:117) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93) at org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:685) at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:677) at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:673) at org.springframework.orm.hibernate3.HibernateTemplate$16.doInHibernate(HibernateTemplate.java:740) at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:406) ... 172 more Caused by: org.postgresql.util.PSQLException: The connection attempt failed. ... Now i have this error Caused by: org.hibernate.exception.JDBCConnectionException: Cannot open connection at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:99) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52) at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:449) at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167) at org.hibernate.jdbc.AbstractBatcher.prepareSelectStatement(AbstractBatcher.java:145) at org.hibernate.id.SequenceGenerator.generateHolder(SequenceGenerator.java:110) at org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:105) at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:121) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:210) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:195) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:117) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93) at org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:685) at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:677) at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:673) at org.springframework.orm.hibernate3.HibernateTemplate$16.doInHibernate(HibernateTemplate.java:740) at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:406) ... 172 more Caused by: org.postgresql.util.PSQLException: The connection attempt failed. ... at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:257) at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:65) at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:159) at org.postgresql.Driver.makeConnection(Driver.java:415) at org.postgresql.Driver.connect(Driver.java:283) at org.apache.tomcat.dbcp.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:38) at org.apache.tomcat.dbcp.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:582) at org.apache.tomcat.dbcp.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:1185) at org.apache.tomcat.dbcp.dbcp.AbandonedObjectPool.borrowObject(AbandonedObjectPool.java:79) at org.apache.tomcat.dbcp.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:106) at org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044) at org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection(LocalDataSourceConnectionProvider.java:83) at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446) ... 186 more Caused by: java.io.EOFException at org.postgresql.core.PGStream.ReceiveChar(PGStream.java:285) at org.postgresql.core.v3.ConnectionFactoryImpl.doAuthentication(ConnectionFactoryImpl.java:405) at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:203)
Skills: Hibernate PostgreSQL Administration PostgreSQL Programming
Fixed-Price - Intermediate ($$) - Est. Budget: $2,000 - Posted
*Freelancers from Bangalore are preferred* An Award winning firm, in Silicon Valley, USA, Baytech, is looking for a Remote OR Freelance Senior Architect located in Bangalore, India. You will lead a team to complete a name-brand social networking project. You can be the next star to shine! Job Responsibilities: Defines infrastructure for design and integration of internet computing systems by analysing information requirements Determining platform architecture, technology, and tools; studying business operations and user-interface requirements Leads and directs development of physical database. Confirms architecture capability and flexibility to support high availability web applications by developing analytical models; completing validation tests. Improves architecture by tracking emerging technologies; evaluating their applicability to business goals and operational requirements. Be responsible for driving technology and best practices in search Be responsible for scaling, performance and quality for the team Driving the adoption of these best practices around coding, design, quality, performance Code reviews, design reviews and management and execution against project plans and delivery commitments Builds software solutions where the problem is not well defined. Designs and defines the interaction between the other component pieces Review and execute appropriate quality plans, project plans, test strategies and processes for development activities in concert with business and project management efforts. Qualifications 9+ years of experience developing large scale software/ web applications Experience in Big Data and cloud computing leveraging Hadoop ecosystem ((Hadoop/HDFS and related technologies) Proven prior experience in building large scalable distributed systems At least 2 Big Data implementations Experience in Java and an expert of all Hadoop components Hands on experience with major components like Map Reduce, HBase, Hive, Pig Strong understanding of underlying Hadoop concepts and distributed computing Solid understanding of current status of big-data technology including hands on experience with design, and building big-data infrastructures. Experience with architecting ERPs (Oracle, SAP etc.) with Data Lake using CDC technologies such as HVR. Direct experience implementing solutions with Hadoop, HBase, HDFS, Spark, Hive. Solid understanding of software development principles and strong knowledge of big-data programming paradigms and techniques. Experience with machine learning algorithms and data mining techniques. Ready to collaborate with Product Owners and business stakeholders to prototype new ideas and define features, feasibility and effort to bring to market. Ability to analyse, identify issues with existing cluster, suggest architectural design changes Ability/ Knowledge to implement Data Governance in Hadoop clusters Certifications like Cloudera Developer/ Administrator Certifications added advantage Ability to lead Software Architecture, Software Design, Network Design and Implementation, Presenting Technical Information, Java, Java Beans, Java Servlets, JavaScript, Web Programming Skills, Developing Budgets, Project Management Experiment with new and relevant technologies and tools, and drive adoption while measuring the impact. Strong skills in object-oriented design, data structures, algorithm design and complexity analysis Strong knowledge of data structures, algorithm, enterprise systems, and asynchronous architectures. Experience building web applications for mobile devices. Deep understanding of web services software architecture and design, including security based implementations. Strong data modelling and database programming skills (Oracle database and PL/SQL experience). Familiarity with UNIX systems (system security model, systems administration, and advanced scripting skills) a plus. Understand TCP/IP networks and concepts with the ability to provide basic troubleshooting assistance to infrastructure disciplines. Proficiency in Java and related technologies. C++ Strong skills working with Databases (RDBMS, ETL, SQL) Solid experience with JavaScript and related technologies (e.g., jQuery, Ember, node.js...) for building richly functional, visually compelling web-based AJAX applications. Scripting skills in Perl, Pig, Python &JavaScript. Experience with Agile Management (SCRUM, RUP, XP), OO Modeling, working on internet, UNIX, and database related projects *This position does require availability in PST time zone.*
Skills: JDBC Agile software development Big Data C++
Hourly - Intermediate ($$) - Est. Time: Less than 1 week, Less than 10 hrs/week - Posted
- Writing both OLTP and ROLAP queries. - Hands on experience with Java, JDBC, J2EE. - RESTful APIs, JSON, XML, X-Schema and XSD. - Understanding of HTTP/HTTPS protocols. - Maven/Ant. - HTML/Javascript, CSS. - AngularJS/IONIC - Gulp/grunt and css preprocessors
Hourly - Entry Level ($) - Est. Time: Less than 1 week, Less than 10 hrs/week - Posted
Plan and Implement Strategies to improve server and app performance The skills we are looking for: Proficiency with Java and its ecosystems, particularly: o Spring o Hibernate o JPA o JDBC o J2EE Solid understanding and experience with following concepts: o Object-Oriented Programming o Design and architectural patterns o Writing reusable Java libraries o Concurrency Patterns o External and embedded databases o Fundamental design principles for a scalable application o Java class loading mechanism o Creating database schemas that represent and support business processes Proficiency with the following programming languages and technologies: o JavaScript / JQuery o AJAX o Web Services (JSON and XML) and REST API Proficiency with Build Tools such as Maven, Gradle, Ant Proficiency with IDEs, like Eclipse and/or STS
Skills: HTML5 Java JavaScript jQuery MySQL Administration Spring Framework Website Development
Fixed-Price - Intermediate ($$) - Est. Budget: $75 - Posted
and table name user d) Build a SQL statement (select name, age from user) from the above parsed JSON and do a JDBC call to a database and e) show the DB result in a rudimentary webpage (AngularJS) Note: Table user (name varchar2(35), age int, location varchar2(100), phone varchar2(100)) Success: If I change the JSON to include additional column say (location), the SQL will have to be dynamically constructed "select name, age, location from user" and the location data should now show up in the webpage.
Skills: AngularJS Node.js
Fixed-Price - Intermediate ($$) - Est. Budget: $150 - Posted
We are willing to have a web-based application for the sake of importing our customer contacts from an Excel or CSV files and import into the web-based system created. Through the system, we should be able to manipulate our customers information and get it exported also to Excel or CSV files.
Skills: JDBC Apache Jakarta POI Bootstrap CSS3