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Showing posts from February 3, 2010

To Calculate Maximum heap size for a JVM.

The maximum heap size controls how much memory the JVM can use. If your BPEL instance runs on a dedicated machine, set this as high as the maximum addressable memory space of your Operating System. Determine the maximum heap by running Java from the command line and specifying the maximum heap. For example, java -mx3000m -version In this case, decrease the maximum heap value until you do not get the error message . You can start by setting the maximum heap to a value satisfying your free RAM bash-3.2$ java -mx3500m -version java version "1.4.2.10" Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2.10-060112-14:28) Java HotSpot(TM) Server VM (build 1.4.2 1.4.2.10-060112-19:42-IA64N IA64, mixed mode) bash-3.2$ java -mx3600m -version Error occurred during initialization of VM java.lang.OutOfMemoryError: unable to create new native thread

SSL handshake failed - OAS Cluster

In xyz server , i saw opmn.log has below entries i.e. cluster handshake, but after that it got resolved automatically as no error got produced, 8042 is the remote ONS port of other server in cluster. 10/02/02 14:10:39 [ons-secure] Connection 172.200.100.100,8042 SSL handshake failed 10/02/02 14:11:25 [ons-connect] Passive connection 172.200.100.100,8042 missing connect Thre reason could be peak load or network disconnectivity. Remoteport, the port that ONS binds to on all interfaces for talking to other ONS daemons.