AQ : CJQ Scheduler Related Process Not Working As Expected / ORA-4030 Errors
(Doc ID 1469803.1)
Last updated on MARCH 07, 2019
Applies to:Oracle Database - Enterprise Edition - Version 188.8.131.52 to 184.108.40.206 [Release 11.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.
The processing of messages which are connected with schedular jobs may be slow;
cjq0 process may be consuming a large amount of memory;
This process may also be encountering ora-4030 errors.
Collecting a heapdump for the problematic CJQ0 process:
conn / as sysdba
alter system set max_dump_file_size=unlimited;
oradebug setospid <OSpid for cjq0>
oradebug dump heapdump 536870917
oradebug tracefile_name (shows the path and filename information)
oradebug close_trace (closes the trace file)
It shows large allocations for "JskrParsePayloa"
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