Capture stopped due to "Can't open oracle log for reading - Permission denied" (4339908)

Although capture was able to process archive log, it would stop due to Cant open [oracle redo name] for reading - Permission denied

Even though the splex user looks like it already has the right permissions, it does not have all the permissions required.

oracle redo log owned by oracle: 640 oracle dba

shareplex user from id: splexadmin groups: staff, dba

Since shareplex user belongs to dba group, it should be able to read the redo log files. However, capture log recorded the following message: LogParallelismMasterThread: OlogReadRec failed: rc=1, and Capture log also indicated capture was stopped because of unix_err=13 which is permission denied.