Archived log not applying

Question

archived logs are not apllying in DR
SQL> select max(sequence#) from v$archived_log where applied='YES';
MAX(SEQUENCE#)
SQL>
SQL> select process,status,sequence# from v$managed_standby;
PROCESS   STATUS        SEQUENCE#
ARCH      CONNECTED             0
ARCH      CONNECTED             0
ARCH      CONNECTED             0
ARCH      CONNECTED             0
RFS       IDLE                  0
RFS       IDLE                  0
RFS       IDLE              34473
MRP0      WAIT_FOR_GAP      31753
RFS       IDLE                  0
RFS       IDLE                  0
RFS       IDLE                  0
11 rows selected.

Answer 1

Hello,
As previously posted, you have a GAP. So, you may have to investigate why the Archived logs cannot be applied.
To do so, you may check for the File System if any Archive destination is FULL. Also, you may have to verify the parameters on the PRIMARY and STANDBY site:
sqlplus "/ as sysdba"
show parameter fal
show parameter dest
show parameter config
show parameter broker
Check also the Alert log on both Primary and Standby.
If the DATAGUARD BROKER is enabled you may also execute this
dgmgrl
show configuration verbose
Also try to "tnsping" the services used in the Archive Destination from both site.
When you are sure that everything is correct then, verify if any Archived logs is missing and try to restore it if possible.
Else if everything is broken, and there's no way to get back the missing Archived logs, you 'll have to "rebuild" the Standby from a new Backup of the PRIMARY.
Hope this help.
Best regards,
Jean-Valentin Lubiez