Capture reading the redo logs during heavy load, at times, causes Oracle pmon error on latch contention. High CPU usage also occurs during this time.
The following message is seen in the Oracle alert log:
PMON failed to acquire latch, see PMON dump.
Capture is multi threaded and its process consumes a lot of CPU due to a presence of LogParallelism on Oracle 10g.
Patch was built to address this issue.
Multi-thread OLOG LogReader was transformed into a single-threaded Olog LogReader to address the problem with Oracle latch contention.
