I'm little bit confused about which implementation is better to use on production server? Are there any reason why not pick OpenJDK?
Java – OpenJDK or Oracle Java on production server
java
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Best Answer
Which version the JDK are you interested in? If it's version 7 and above, then almost all code is shared between Oracle Java and Open JDK.
Check this - Moving to OpenJDK as the official Java SE 7 Reference Implementation. The OpenJDK is the open-source implementation of the Java SE 7 JSR (JSR 336). Now there is very little difference between the Oracle JDK and the OpenJDK.
Also check this Q&A
However, why do you not want to use Oracle/Sun JRE/JDK?