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Ability to Tune Threadpool for Non-blocking Invokes (Doc ID 1281286.1)

Last updated on FEBRUARY 22, 2019

Applies to:

Oracle(R) BPEL Process Manager 10g - Version and later
Information in this document applies to any platform.


A new thread pool was introduced in BPEL through unpublished BUG:9924311 - NEED TO PROVIDE ABILITY OF TUNING THREADPOOL FOR NONBLOKING INVOKES. The new pool called Non Blocking Invoke Pool , will process only non-blocking invoke dispatch messages. Previously, non-blocking invoke dispatch messages were processed by the invoke dispatch set, which also processes instance invocation messages. If high number of non-blocking invoke messages are created, the non-blocking invokes will compete with instance invocation messages for the invoke dispatch set threads. This could cause starvation of threads if the BPEL process performs a high number of non-blocking and synchronous invokes.

The size of the Non Blocking thread pool can be configured through the new property dspNonBlockThreads which needs to be added inside domain.xml file as follows:

<property id="dspNonBlockThreads">
 <name>non blocking invoke pool</name>
 <comment><![CDATA[non blocking invoke pool ]]></comment>


   - Default value of dspNonBlockThreads is 3.
   - The nonBlockingInvoke property must be set to TRUE at the partner link level to use the new thread 


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