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Support Article

System crashing periodically

SA-30442

Summary



Systems are crashing repeatedly. JBoss remains up but Pega is unresponsive.


Error Messages



17:01:43,827 INFO  [stdout] (Dispatcher-Thread-116) User ID: (unknown)
17:01:43,827 INFO  [stdout] (Dispatcher-Thread-116) Last SQL: select 1 from PRPC_ADM.pr_sys_app_hierarchy_flat where pzTopAppHash = ? and pzAppHash = ?

17:01:43,827 INFO  [stdout] (Dispatcher-Thread-116) java.sql.SQLRecoverableException: ORA-01089: immediate shutdown in progress - no operations are permitted
17:01:43,827 INFO  [stdout] (Dispatcher-Thread-116) 

17:01:43,827 INFO  [stdout] (Dispatcher-Thread-116)     at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:450)

17:01:43,827 INFO  [stdout] (Dispatcher-Thread-116)     at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:399)


Steps to Reproduce



Not Applicable


Root Cause



A defect or configuration issue in the operating environment. 

Resolution



Here’s the explanation for the reported behavior: 

Observed the error '
java.sql.SQLRecoverableException: ORA-01089: immediate shutdown in progress - no operations are permitted' right before the system hung.

This normally means that a DBA is running 'shutdown immediate' command for the Oracle instance.

That suggests a potential reason for the current incidence of the system hung.

For future system hung incidences, user is suggested to generate thread dumps and send them to Pega GCS before recycling the server.
Suggest Edit

Published December 14, 2016 - Updated October 8, 2020

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