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Support Article

Hung clones causing system crash led to restart

SA-46172

Summary



Time out occurs while borrowing service requestor from requestor pool for service package: CTILinkRemoteEvent
Due to which it got hung and restarted 2-3 times to get it resolved, because of the server hung in this JVM users from this node were routed to other JVM's and affected the performance.

Restarting server fixes the issue temporarily.


Error Messages



2017-10-25 12:59:45,602 [ WebContainer : 5476] [ ] [ ] [ ] ( internal.mgmt.RequestorPool) ERROR - Timed out borrowing service requestor from requestor pool for service package: CTILinkRemoteEvent
................
Caused by:
java.util.NoSuchElementException: Timeout waiting for idle object
at com.pega.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:751)
at com.pega.pegarules.session.internal.mgmt.RequestorPool.borrowRequestor(RequestorPool.java:479)
... 55 more


Steps to Reproduce



Not Applicable


Root Cause



User has exhausted the requestor pools for the remote ctilink implementation. (Service Packages: CTILinkRequest, CTILinkRemoteEvent, CTILinkEvent).

Error was showing up for all the service package rules and it is verified in Systems Management Application (SMA) that connections were timing out. Higher call volume than normal could have lead to this.

Resolution



Perform the following steps:
  1. Increase max requestors from 10-15 in the following service package rules: Service Packages: CTILinkRequest, CTILinkRemoteEvent, CTILinkEvent.
  2. Monitor using SMA and adjust as necessary.

Published March 19, 2018 - Updated October 8, 2020

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