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Support Article

Frequent RequestorLockException and hung threads in multi node



Hung threads were reported very frequently in the PRPC 6.1 SP2 environment after it was recently moved to WebSphere v7.0.0.31. PRPC application works properly after restart for few hours and threads start getting hung again. Same application was working properly in their old environment which was based on WebSphere v6.  

Error Messages Unable to synchronize on requestor H2BE70F82F71B384A785A1F81C2725E47 within 120 seconds and also some of assembly related errors.

Steps to Reproduce


Root Cause

User have two PRPC nodes (two JVMs connecting to same PegaRULES database) and both were pointing to same PRPC temporary directory. Such misconfiguration would cause frequent requestor lock and assembly related issues.


Each PRPC node must have its separate PRPC temporary directory. With this configuration change, reported issues were resolved.

Published January 31, 2016 - Updated October 8, 2020

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