Any DG Experts out there who knows more about the reliability for v$archive_dest_status as it has been many years since I have written scripts to monitor DG.
Don’t want to reinvent the wheel if I cannot make it better.
Note: gap_status is only available from 11gR2 +++
SQL*Plus: Release 11.2.0.4.0 Production on Sun Jan 10 11:06:55 2016
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
ARROW:(SYS@hawklas):PRIMARY> select
2 arch.dest_id,
3 arch.thread# "thread",
4 arch.sequence# "last sequence received",
5 appl.sequence# "last sequence applied",
6 (arch.sequence#-appl.sequence#) "difference"
7 from
8 (
9 select dest_id,thread#,sequence# from v$archived_log
10 where (thread#,first_time)
11 in (select thread#,max(first_time) from v$archived_log where resetlogs_change#=(select resetlogs_change# from v$database) group by thread#)
12 ) arch,
13 (
14 select thread# ,sequence# from v$log_history
15 where (thread#,first_time)
16 in (select thread#,max(first_time) from v$log_history where resetlogs_change#=(select resetlogs_change# from v$database) group by thread#)
17 ) appl
18 where arch.thread#=appl.thread#
19 order by 1
20 ;
DEST_ID thread last sequence received last sequence applied difference
------- ------ ---------------------- --------------------- ----------
1 1 234 234 0
2 1 234 234 0
Elapsed: 00:00:07.99
ARROW:(SYS@hawklas):PRIMARY> select
2 DEST_ID,STATUS,TYPE,DATABASE_MODE,RECOVERY_MODE,STANDBY_LOGFILE_COUNT srl_ct,STANDBY_LOGFILE_ACTIVE srl_active,
3 ARCHIVED_THREAD# thrd,ARCHIVED_SEQ# seq,APPLIED_SEQ# applied,SRL,
4 GAP_STATUS, decode(ERROR,null,'NONE','ERROR') error
5 from v$archive_dest_status
6 where status!='INACTIVE'
7 ;
DEST_ID STATUS TYPE DATABASE_MODE RECOVERY_MODE SRL_CT SRL_ACTIVE THRD SEQ APPLIED SRL GAP_STATUS ERROR
------- --------- -------------- --------------- ----------------------- ------ ---------- ---- ---- ------- --- ------------------------ -----
1 VALID LOCAL OPEN IDLE 0 0 1 234 0 NO NONE
2 VALID PHYSICAL MOUNTED-STANDBY MANAGED REAL TIME APPLY 4 0 1 234 233 YES NO GAP NONE
Elapsed: 00:00:00.01
ARROW:(SYS@hawklas):PRIMARY>
SQL*Plus: Release 11.2.0.4.0 Production on Sun Jan 10 11:06:36 2016
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
ARROW:(SYS@hawksan):PHYSICAL STANDBY> select
2 arch.dest_id,
3 arch.thread# "thread",
4 arch.sequence# "last sequence received",
5 appl.sequence# "last sequence applied",
6 (arch.sequence#-appl.sequence#) "difference"
7 from
8 (
9 select dest_id,thread#,sequence# from v$archived_log
10 where (thread#,first_time)
11 in (select thread#,max(first_time) from v$archived_log where resetlogs_change#=(select resetlogs_change# from v$database) group by thread#)
12 ) arch,
13 (
14 select thread# ,sequence# from v$log_history
15 where (thread#,first_time)
16 in (select thread#,max(first_time) from v$log_history where resetlogs_change#=(select resetlogs_change# from v$database) group by thread#)
17 ) appl
18 where arch.thread#=appl.thread#
19 order by 1
20 ;
DEST_ID thread last sequence received last sequence applied difference
------- ------ ---------------------- --------------------- ----------
1 1 234 234 0
Elapsed: 00:00:00.01
ARROW:(SYS@hawksan):PHYSICAL STANDBY> select
2 DEST_ID,STATUS,TYPE,DATABASE_MODE,RECOVERY_MODE,STANDBY_LOGFILE_COUNT srl_ct,STANDBY_LOGFILE_ACTIVE srl_active,
3 ARCHIVED_THREAD# thrd,ARCHIVED_SEQ# seq,APPLIED_SEQ# applied,SRL,
4 GAP_STATUS, decode(ERROR,null,'NONE','ERROR') error
5 from v$archive_dest_status
6 where status!='INACTIVE'
7 ;
DEST_ID STATUS TYPE DATABASE_MODE RECOVERY_MODE SRL_CT SRL_ACTIVE THRD SEQ APPLIED SRL GAP_STATUS ERROR
------- --------- -------------- --------------- ----------------------- ------ ---------- ---- ---- ------- --- ------------------------ -----
1 VALID LOCAL MOUNTED-STANDBY MANAGED REAL TIME APPLY 0 0 1 234 0 NO NONE
2 VALID UNKNOWN UNKNOWN IDLE 0 0 0 0 0 NO NONE
32 VALID UNKNOWN UNKNOWN IDLE 0 0 1 234 234 NO NONE
Elapsed: 00:00:00.00
ARROW:(SYS@hawksan):PHYSICAL STANDBY>
