ORA-21780: Maximum number of object durations exceeded.

I noticed that the Oracle Enterprise Manager (OEM) repository database was throwing ORA-21780 errors every 10 seconds. This is what I found in the alertlog file:Mon May 11 17:51:56 2010Errors in file /oracle_binaries/app/diag/rdbms/oem/OEM1/trace/OEM1_smon_12465.trc:ORA-21780: Maximum number of object durations exceeded.Errors in file /oracle_binaries/app/diag/rdbms/oem/OEM1/trace/OEM1_smon_12465.trc:ORA-21780: Maximum number of object durations exceeded.Now looking at the SMON trace file:*** 2015-05-11… Continue reading ORA-21780: Maximum number of object durations exceeded.