How To Avoid Blocked Database Sessions Running 'UPDATE SNP_SESSION SET NB_CHILD_RUN=NB_CHILD_RUN - 1 WHERE SESS_NO=:1' When Using The ODI OdiPurgeLog Tool (Doc ID 1993320.1)

Last updated on MARCH 10, 2017

Applies to:

Oracle Data Integrator - Version 10.1.3.2.0 and later
Information in this document applies to any platform.

Symptoms

The following Oracle Data Integrator (ODI) command is issued for deleting the log:

OdiPurgeLog "-PURGE_TYPE=ALL" "-TODATE=#UTILITIES.ODI_LOGPURGEDATE" "-STATUS=D" "-PURGE_REPORTS=YES" "-XML_CHARSET=ISO-8859-1" "-JAVA_CHARSET=ISO8859_1" "-REMOVE_TEMPORARY_OBJECTS=YES"

      with the ODI_LOGPURGEDATE Variable refreshed as follows:

select to_char(SYSDATE,'YYYY-MM-DD')||' ' ||'18:00:00' from dual

This job may not purge all the logs, and result in database sessions that are stuck / blocked while running the following SQL command:

UPDATE SNP_SESSION SET NB_CHILD_RUN=NB_CHILD_RUN - 1 WHERE SESS_NO=:1

Cause

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