Data Guard - MRP stuck issues on a physical standby database

Question

Hi,
Oracle 11.2.0.3 DG running. When i do a switchover the physical standby database has error with following error
ARC0: LGWR is actively archiving destination LOG_ARCHIVE_DEST_2
ARCH: Archival stopped, error occurred. Will continue retrying
ORACLE Instance <primaryDB> - Archival Error
On standby DB
SQL>select process, thread#, sequence#, status from v$managed_standby where process='MRP0';
PROCESS THREAD# SEQUENCE# STATUS
MRP0 1 548 APPLYING_LOG
So according to Oracle support link i executed following
SQL>recover managed standby database cancel;
SQL>recover automatic standby database;
The above seems to resolve the issue. What is causing is this?

Answer 1

Hello again;
Those both look perfect. I combed through my notes and found nothing like this for your version.
Yes, I would open an SR since it appears you have done everything correct.
ORA-600 [3020] "Stuck Recovery" [ID 30866.1]
The "Known Bugs" section of the above has a few 11.2.0.3 entries.
Generally the MRP gets stuck because data Guard thinks there's a GAP, you run out of room in the FRA on the Standby, or redo logs are too small and the system is switching very fast.
Best Regards
mseberg
Later
Never asked you but this "log_archive_max_processes" can be set as high as 30.
Edited by: mseberg on Jul 16, 2012 8:01 PM
h2. Still later
Found this which is closer :
Bug 13553883 - Archiver stuck but no ORA-19xxx error in alert log (messages need changing) [ID 13553883.8]