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Support Article

Error 503: PegaRULES server not available



PRPC system is not accessible after a server restart.

Error Messages

Error 503: PegaRULES server not available

Inspection of the PRPC log files indicate that the PRPC Node fails to start up with the following exception stack being reported. 

2014-11-05 10:36:50,268 [xxxxxxxx] [ STANDARD] [ ] ( etier.impl.EngineStartup) ERROR - PegaRULES initialization failed. Server: xxxxxxxxxxx PRNodeImpl init failed 
at com.pega.pegarules.session.internal.mgmt.PREnvironment.getThreadAndInitialize( 
at com.pega.pegarules.session.internal.PRSessionProviderImpl.getThreadAndInitialize( 
at com.pega.pegarules.session.internal.engineinterface.etier.impl.EngineStartup.initEngine( 
Caused by: 
at com.pega.pegarules.monitor.internal.license.LicenseDaemonImpl.callUsageAggregationStoredProcedure( 
at com.pega.pegarules.monitor.internal.license.InvocationTrackerImpl.initializeAtStartup( 
at com.pega.pegarules.session.internal.mgmt.PREnvironment.getThreadAndInitialize( 
... 46 more 

Steps to Reproduce

Not easily replicated, the issue occurs intermittently in the customer environment after re-start of the server.

Root Cause

A defect in Pegasystems’ code/rules. Under certain circumstances within ThreadConnectionStoreImpl.endTransaction the execution path falls into the "container-manager tranasction" case and call PRSessionContext.setRollbackOnly. This may be invalid if the application is not participating  in a container-managed transaction.


This issue is resolved by hotfix item HFIX-10339 which ensures that a roll back on failure only occurs if the Container is providing the transaction to prevent the exception reported occurring and preventing the system initialization.

Published January 31, 2016 - Updated October 8, 2020

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