Applying program temporary fixes

Some of the Java™ topics has information that assumes you have loaded the latest levels of the IBM Developer Kit for Java on your IBM i server. To get to the latest levels of Java on your server, load the latest Java Program Temporary Fix (PTF) group.

Java PTFs and PTFs that impact Java are periodically packaged as part of a PTF group. A PTF group consists of a list of PTFs defined for the purpose of managing those PTFs as one entity. A new level of the Java PTF group may be released several times within a calender year. It is recommended that you install the latest PTFs to upgrade to the latest level of the IBM Developer Kit for Java. See the Preventive Service Planning - PSP Link outside Information Center Web page for the Java PTF group number and latest group level that is available.

Note: A Java PTF that can be applied immediately may not affect a Java Virtual Machine (JVM) that is running within a job. However, in some cases, applying the PTF will cause unpredictable results. You can use the Display Java Virtual Machine Jobs (DSPJVMJOB) CL command to manage your JVM jobs and apply PTFs while the system is active. The DSPJVMJOB command shows which jobs have JVMs running in them. The information can then be used to end the jobs containing active JVMs before applying PTFs, instead of waiting for an initial program load (IPL) for the PTFs to be applied.