Environment: Oracle 11GR2, Windows server 2003. I have an Oracle procedure used to invoke remote api using https connection. If we access https site in Oracle, we should do some setting on Oralce wallet. In the past four months, the procedure worked well. 3 days ago, due to the api vendor changed there certificate, my procedure can't invoke remote api with the error: ORA-29024: Certificate validation failure. Now though I got new certificate file(this time they give me a .crt file, but in the past four months we used a .p7b file as certificate) from the api vendor and registered it in my Oracle wallet, the problem still exists. If you are familiar with Oracle wallet, SSL certificate, I can let you remote control my server and do some setting via teamviewer. If the problem is solved, I will award you and pay you at once.