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Who is cleaning out my .trc files?

edited Jan 9, 2019 1:12PM in Database Administration (MOSC) 3 commentsAnswered ✓

Oracle 12.1.0.2 SE-2 on Oracle Linux 6 and Windows 2012.

While investigating another issue (isn't that always the case?) I noticed that in $ORACLE_BASE/diag/rdbms/<orasid>/<orasid>/trace, the oldest .trc files only go back one month, give or take a day.  This is consistent across 12 databases on 6 servers.  The only exception is one very idle test database, where the oldest trc file is from Nov 20, 2018 - not quite 2 months old.

Missing these files isn't in itself a problem.  In fact I was considering putting in a script to do housekeeping.  But I was surprised to see that something seems to be doing the housekeeping already.  I have certainly not scheduled any jobs to delete old trace files.  Have I missed something like perhaps adrci being invoked by default somewhere in the database?

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