Gap in standby db
hi,
backgroup:
i've changed my primary db from archivelog mode to noarchivelog mode when some problem happend which cause the arch generated about 1G data within two minutes that lead to disk space used up within few hours, i've recovered the primary db to archivelog mode 4 hours later after i've settled down that problem
now comes this problem: arch gap come out because of this change(primary db run 4 hours in noarchivelog mode), now the standby are waiting for gap and can not apply log any more ,how to settle this problem?
please advise, thanks in advance!
kingtsi wrote:
hi,
backgroup:
i've changed my primary db from archivelog mode to noarchivelog mode when some problem happend which cause the arch generated about 1G data within two minutes that lead to disk space used up within few hours, i've recovered the primary db to archivelog mode 4 hours later after i've settled down that problem
now comes this problem: arch gap come out because of this change(primary db run 4 hours in noarchivelog mode), now the standby are waiting for gap and can not apply log any more ,how to settle this problem?
please advise, thanks in advance!
Hi,
On physical standby check the gap with query
SELECT * FROM V$ARCHIVE_GAP;then copy the missing archive to standby and apply it manually if necessary with command
ALTER DATABASE REGISTER LOGFILE 'xxx.arc';Cheers
Similar Messages
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How to Perform Failover When GAP on Standby
hi ,
i want to activate my standby in read/write
but i can't..i don't have archivelogs and i can't restore standby from incremental backup
ALTER DATABASE ACTIVATE STANDBY DATABASE
ALTER DATABASE ACTIVATE [PHYSICAL] STANDBY DATABASE (work)
Begin: Standby Redo Logfile archival
End: Standby Redo Logfile archival
Signalling error 1152 for datafile 1!
Beginning standby crash recovery.
Serial Media Recovery started
Managed Standby Recovery starting Real Time Apply
Media Recovery Waiting for thread 1 sequence 1174115
Fetching gap sequence in thread 1, gap sequence 1174115-1174214
Sat Nov 17 17:07:09 2012
Fetching gap sequence in thread 1, gap sequence 1174115-1174214
Sat Nov 17 17:07:19 2012
Fetching gap sequence in thread 1, gap sequence 1174115-1174214
Sat Nov 17 17:07:29 2012
Fetching gap sequence in thread 1, gap sequence 1174115-1174214
Sat Nov 17 17:07:39 2012
Fetching gap sequence in thread 1, gap sequence 1174115-1174214
Sat Nov 17 17:07:50 2012
Fetching gap sequence in thread 1, gap sequence 1174115-1174214
Sat Nov 17 17:08:00 2012
Fetching gap sequence in thread 1, gap sequence 1174115-1174214
Standby crash recovery need archive log for thread 1 sequence 1174115 to continue.
Please verify that primary database is transporting redo logs to the standby database.
Wait timeout: thread 1 sequence 1174115
Standby crash recovery aborted due to error 16016.
Errors in file /oracle/diag/rdbms/b2resnew/work/trace/work_ora_36176058.trc:
ORA-16016: archived log for thread 1 sequence# 1174115 unavailable
Recovery interrupted!
Completed standby crash recovery.
Signalling error 1152 for datafile 1!
ORA-1152 signalled during: ALTER DATABASE ACTIVATE STANDBY DATABASE...
Sat Nov 17 17:08:12 2012
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE FINISH
Attempt to do a Terminal Recovery (work)
Media Recovery Start: Managed Standby Recovery (work)
started logmerger process
Sat Nov 17 17:08:12 2012
Managed Standby Recovery not using Real Time Apply
Parallel Media Recovery started with 32 slaves
Media Recovery Waiting for thread 1 sequence 1174115
Fetching gap sequence in thread 1, gap sequence 1174115-1174214
Fetching gap sequence in thread 1, gap sequence 1174115-1174214
RECOVER...FINISH not allowed due to gap
GAP - thread 1 sequence 1174115-1174214
DBID 3179924020 branch 606674959
Recovery interrupted!
Media Recovery failed with error 16171
Errors in file /oracle/diag/rdbms/b2resnew/work/trace/work_pr00_37421192.trc:
ORA-00283: recovery session canceled due to errors
ORA-16171: RECOVER...FINISH not allowed due to gap for thr 1, seq 1174115-1174214
Slave exiting with ORA-283 exception
Errors in file /oracle/diag/rdbms/b2resnew/work/trace/work_pr00_37421192.trc:
ORA-00283: recovery session canceled due to errors
ORA-16171: RECOVER...FINISH not allowed due to gap for thr 1, seq 1174115-1174214
ORA-10877 signalled during: ALTER DATABASE RECOVER MANAGED STANDBY DATABASE FINISH ...
SQL> ALTER DATABASE ACTIVATE STANDBY DATABASE;
ALTER DATABASE ACTIVATE STANDBY DATABASE
ERROR at line 1:
ORA-01152: file 1 was not restored from a sufficiently old backup
ORA-01110: data file 1: '/oradata/ctrl/system01.dbf'
SQL> RECOVER MANAGED STANDBY DATABASE FINISH
ORA-10877: error signaled in parallel recovery slave
SQL>
how open my physical standby in rw?
thanksCKPT hi.
Do you have Broker enabled?
yes.now i disabled.
+1174115 I do not have+
Sat Nov 17 18:17:13 2012
Completed: Data Guard Broker shutdown
Sat Nov 17 18:17:14 2012
ALTER SYSTEM SET dg_broker_start=FALSE SCOPE=BOTH;
Sat Nov 17 18:17:27 2012
ALTER DATABASE RECOVER managed standby database cancel
ORA-16136 signalled during: ALTER DATABASE RECOVER managed standby database cancel ...
Sat Nov 17 18:17:45 2012
alter database activate standby database
ALTER DATABASE ACTIVATE [PHYSICAL] STANDBY DATABASE (work)
Begin: Standby Redo Logfile archival
End: Standby Redo Logfile archival
Signalling error 1152 for datafile 1!
Beginning standby crash recovery.
Serial Media Recovery started
Managed Standby Recovery starting Real Time Apply
Warning: Datafile 87 (/oradata/data/b2_data75.dbf) is offline during full database recovery and will not be recovered
Media Recovery Waiting for thread 1 sequence 1174115
Fetching gap sequence in thread 1, gap sequence 1174115-1174214
Sat Nov 17 18:17:55 2012
Fetching gap sequence in thread 1, gap sequence 1174115-1174214
Sat Nov 17 18:18:06 2012
Fetching gap sequence in thread 1, gap sequence 1174115-1174214
Sat Nov 17 18:18:16 2012
Fetching gap sequence in thread 1, gap sequence 1174115-1174214
Sat Nov 17 18:18:26 2012
Fetching gap sequence in thread 1, gap sequence 1174115-1174214
Sat Nov 17 18:18:36 2012
Fetching gap sequence in thread 1, gap sequence 1174115-1174214
Sat Nov 17 18:18:47 2012
Fetching gap sequence in thread 1, gap sequence 1174115-1174214
Standby crash recovery need archive log for thread 1 sequence 1174115 to continue.
Please verify that primary database is transporting redo logs to the standby database.
Wait timeout: thread 1 sequence 1174115
Standby crash recovery aborted due to error 16016.
Errors in file /oracle/diag/rdbms/b2resnew/work/trace/work_ora_37617862.trc:
ORA-16016: archived log for thread 1 sequence# 1174115 unavailable
Recovery interrupted!
Completed standby crash recovery.
Signalling error 1152 for datafile 1!
ORA-1152 signalled during: alter database activate standby database...
SQL> select TS#,STATUS,ENABLED,file# from v$datafile order by status;
TS# STATUS ENABLED FILE#
6 ONLINE READ WRITE 66
6 ONLINE READ WRITE 67
6 ONLINE READ WRITE 68
6 ONLINE READ WRITE 69
6 ONLINE READ WRITE 70
6 ONLINE READ WRITE 71
6 ONLINE READ WRITE 72
6 ONLINE READ WRITE 73
6 ONLINE READ WRITE 74
6 ONLINE READ WRITE 75
6 ONLINE READ WRITE 76
6 ONLINE READ WRITE 77
6 ONLINE READ WRITE 78
6 ONLINE READ WRITE 79
6 ONLINE READ WRITE 80
6 ONLINE READ WRITE 81
6 ONLINE READ WRITE 82
6 ONLINE READ WRITE 83
6 ONLINE READ WRITE 84
6 ONLINE READ WRITE 85
6 ONLINE READ WRITE 86
1 ONLINE READ WRITE 2
3 ONLINE READ WRITE 3
4 ONLINE READ WRITE 4
5 ONLINE READ WRITE 5
6 ONLINE READ WRITE 6
7 ONLINE READ WRITE 7
8 ONLINE READ WRITE 8
9 ONLINE READ WRITE 9
6 ONLINE READ WRITE 10
6 ONLINE READ WRITE 11
1 ONLINE READ WRITE 12
6 ONLINE READ WRITE 13
6 ONLINE READ WRITE 14
6 ONLINE READ WRITE 15
1 ONLINE READ WRITE 16
6 ONLINE READ WRITE 17
6 ONLINE READ WRITE 18
6 ONLINE READ WRITE 19
6 ONLINE READ WRITE 20
6 ONLINE READ WRITE 21
6 ONLINE READ WRITE 22
6 ONLINE READ WRITE 23
6 ONLINE READ WRITE 24
6 ONLINE READ WRITE 25
7 ONLINE READ WRITE 26
6 ONLINE READ WRITE 27
10 ONLINE READ WRITE 28
6 ONLINE READ WRITE 29
6 ONLINE READ WRITE 30
6 ONLINE READ WRITE 31
6 ONLINE READ WRITE 32
6 ONLINE READ WRITE 33
6 ONLINE READ WRITE 34
6 ONLINE READ WRITE 35
6 ONLINE READ WRITE 36
6 ONLINE READ WRITE 37
6 ONLINE READ WRITE 38
6 ONLINE READ WRITE 39
6 ONLINE READ WRITE 40
6 ONLINE READ WRITE 41
6 ONLINE READ WRITE 42
6 ONLINE READ WRITE 43
6 ONLINE READ WRITE 44
6 ONLINE READ WRITE 45
6 ONLINE READ WRITE 46
6 ONLINE READ WRITE 47
6 ONLINE READ WRITE 48
6 ONLINE READ WRITE 49
6 ONLINE READ WRITE 50
6 ONLINE READ WRITE 51
6 ONLINE READ WRITE 52
6 ONLINE READ WRITE 53
6 ONLINE READ WRITE 54
6 ONLINE READ WRITE 55
6 ONLINE READ WRITE 56
6 ONLINE READ WRITE 57
6 ONLINE READ WRITE 58
6 ONLINE READ WRITE 59
6 ONLINE READ WRITE 60
6 ONLINE READ WRITE 61
6 ONLINE READ WRITE 62
6 ONLINE READ WRITE 63
6 ONLINE READ WRITE 64
6 ONLINE READ WRITE 65
6 RECOVER READ WRITE 87
6 RECOVER READ WRITE 88
0 SYSTEM READ WRITE 1
88 rows selected.
SQL>
how i can remove "RECOVER" in mount state ? -
Hi group
How can I know how many archivelogs a standby have been applied and how many are still missing or not have been applied and their number of secuences.
OS: AIX 5.3
BD: 10.2.0.3
OS: AIX 5.3
BD: 9.2.0.5
Thanks in advance.
Edited by: user12003066 on 30-abr-2010 10:19-- Determine if apply is lagging behind and by how much. Missing
-- sequence#'s in a range indicate that a gap exists.
-- Execute on Standby database
set numwidth 15
column trd format 99
select thread# trd, sequence#,
first_change#, next_change#,
dict_begin beg, dict_end end,
to_char(timestamp, 'hh:mi:ss') timestamp,
(case when l.next_change# < p.read_scn then 'YES'
when l.first_change# < p.applied_scn then 'CURRENT'
else 'NO' end) applied
from dba_logstdby_log l, dba_logstdby_progress p
order by thread#, first_change#;
spool off -
How to apply archivelog with gap on standby database
Hi All,
Oracle Database version : 9.2.0.6
Following is my sequence of commands on standby database.
SQL>alter database mount standby database;
SQL> RECOVER AUTOMATIC STANDBY DATABASE UNTIL CHANGE n;
ORA-00279: change 809120216 generated at 07/24/2006 09:55:03 needed for thread
1
ORA-00289: suggestion : D:\ORACLE\ADMIN\TEST\ARCH\TEST001S19921.ARC
ORA-00280: change 809120216 for thread 1 is in sequence #19921
ORA-00278: log file 'D:\ORACLE\ADMIN\TEST\ARCH\TEST001S19921.ARC' no longer
needed for this recovery
ORA-00308: cannot open archived log
'D:\ORACLE\ADMIN\TEST\ARCH\TEST001S19921.ARC'
ORA-27041: unable to open file
OSD-04002: unable to open file
O/S-Error: (OS 2) The system cannot find the file specified.
I have check the last sequence# on standby database which is 19921. And I have archivelog starting from sequence# 20672 onwards. When I am trying to apply archive log starting from sequence# 20672 , it is searching for 'D:\ORACLE\ADMIN\TEST\ARCH\TEST001S19921.ARC' file and cancel the recovery. Please note that I don't have those missing archive on Primary server as well. So How can I apply the remaining archive log which I do have from 20672 onwards.
I hope I am not creating any confusion.
Thx in advance.Hi Aijaz,
Thx for your answer. But my scenario is bit complex. I have checked my standby database status which is not running in recovery mode. I have tried to find archive_gap which is 0 on standby server. I am copying all archived log from primary to standby thru the script every 2 hour and appying them on standby. After applying, the script is removing all applied log files from primary as well as standby. So it is something like I have archivelog from 1,2,3,7,8,9,10. So 4,5 and 6 archivelog are missing which is required when I am trying to recover standby database. Also note that I want to apply 7,8,9,10. I will loose some data from those missing archive but I have cold back any way. I don't have those missing archivelog files(4,5 and 6) anywhere at all. So how can I recover standby database. I am using standby just for the backup purpose.
I hope my question is clear now.
Thx in advance
- Mehul -
When I did archive log list on my primary, it gives me
archive log list;
Database log mode Archive Mode
Automatic archival Enabled
Archive destination /u04/oradata/arch/PROD/
Oldest online log sequence 29627
Next log sequence to archive 29629
Current log sequence 29629
when I did archive log list on standby , it gives me
SQL> archive log list;
Database log mode Archive Mode
Automatic archival Enabled
Archive destination /u04/oradata/arch/STNBY/
Oldest online log sequence 29627
Next log sequence to archive 0
Current log sequence 29629
During the hot backup of primary, its showing up these errors.
RMAN-08137: WARNING: archive log not deleted as it is still needed
archive log filename=/u04/oradata/arch/PROD/PROD_0001_749397572_0000029124.arc thread=1 sequence=29124
RMAN-08137: WARNING: archive log not deleted as it is still needed
archive log filename=/u04/oradata/arch/PROD/PROD_0001_749397572_0000029125.arc thread=1 sequence=29125
RMAN-08137: WARNING: archive log not deleted as it is still needed
archive log filename=/u04/oradata/arch/PROD/PROD_0001_749397572_0000029126.arc thread=1 sequence=29126
I am sure standby is not in sync with Primary.
Can someone explain me how to resolve this issue.
Thank youHere is how you can check whether or not your physical standby is in sync with the primary:
1. Check for GAP on standby
2. Check redo received on standby
3. Check redo applied on standby
Please refer to this url:
http://www.oraclemasters.in/?p=1255 -
Hangup transport archive log in primary and archive log apply
Hi
I am building Dataguard from 3-node primary cluster to 3-node standby cluster
Oracle Version:10.2.0.4
Operating system : LInux 64 bit
After I restored standby database, I configured dataguard broker with wrong unique_name parameter in standby cluster using grid control
after I corrected mistake, disabled dataguard broker parameters, delete dataguard broker files and reboot standby cluster but don't reboot primary cluster because is production enviroment.
I have problem with following symptoms:
-Hangup transport archive log while recovery database in standby then gap archivelog is produced.
-Copy and register all archivelog gap in standby but don't apply archive log.
- Don't register like applied in v$archived_log in primary the archives applied in standby manually.
-RMAN command: "backup as COMPRESSED BACKUPSET tag 'Backup Full Disk' archivelog all not backed up delete all input;"
don't delete in primary archive log applied because message " archive log is necessary"
I think that is necessary reboot primary cluster.
Please helpmePost the results of queries. It is difficult to understand.
post from primary
SQL> select thread#,max(sequence#) from v$archived_log group by thread#;select ds.dest_id id
, ad.status
, ds.database_mode db_mode
, ad.archiver type
, ds.recovery_mode
, ds.protection_mode
, ds.standby_logfile_count "SRLs"
, ds.standby_logfile_active active
, ds.archived_seq#
from v$archive_dest_status ds
, v$archive_dest ad
where ds.dest_id = ad.dest_id
and ad.status != 'INACTIVE'
order by
ds.dest_id
Post from standby.
SQL> select thread#,max(sequence#) from v$archived_log where applied='YES' group by thread#;
select * from v$managed_standby; -
ORA-01111: for undo tablespace
Hi,
We have large archive gap in standby.
When we try to apply archive log manually using recover standby database, it throws the below error
SQL> recover standby database;
ORA-00283: recovery session canceled due to errors
ORA-01111: name for data file 35 is unknown - rename to correct file
ORA-01110: data file 35: '/data/db/tech_st/11.1.0/dbs/UNNAMED00035'
ORA-01157: cannot identify/lock data file 35 - see DBWR trace file
ORA-01111: name for data file 35 is unknown - rename to correct file
ORA-01110: data file 35: '/data/db/tech_st/11.1.0/dbs/UNNAMED00035'
We have added File 35 in Primary in undo tablespace , hence it's throwing error.
Please advice.
ThanksHi,
If you have the same filesystem on both primary and standby database, then why dont you try backing up single file and restoring to standby database.
Connect to your primary database:
rman target /
run
allocate channels...;
backup datafile 35;
Copy the backup piece to standby database. On standby database:
rman target /
catalog start with 'backup location';
restore datafile 35;
then on your sqlplus:
recover standby database;
Hope this will resolve your problem. -
Data Guard -- v$archive_log applied column shows wrong info
I'm playing with 10g Data Guard. Both Primary and Physical Standby are in Maximum Availability mode. When I query v$archived_log column applied for dest_id=2 (which is physical standby) for some files it shows NO value but alert log on both primary and standby shows file transferred info. Even on physical standby v$archived_log shows log is applied YES value. My question is : So why is Primary database's v$archived_log shows value NO ?
I am trying to setup crontab so that once I see value YES in primary's v$archived_log for dest_id = 2 then I can backup archived log file and delete it from primary database machine. But my perl script won't work because primary v$archived_log shows value NO for applied column for dest_id = 2.
Thanks.Hi OrionNet,
I think I am looking at the wrong column and also on the wrong database for what I need to do. Let me explain what I am trying to achieve.
I have a shell script to check if archived logs are shipped from Primary to Standby AND if Standby successfully applied it or not. My shell script was looking at Primary databases using following query
select sequence#, archived, applied
from v$archived_log
where dest_id = 2 -- running on Primary BUT looking at standby archived log destination
order by sequence# ;
SEQUENCE# ARCHIEVED APPLIED
=====================
58 YES YES
59 YES YES
*60* YES NO
61 YES YES
After reading [v$archived_log reference entry in manual|http://download.oracle.com/docs/cd/B19306_01/server.102/b14237/dynviews_1016.htm#REFRN30011]
APPLIED Indicates whether the archivelog has been applied to its corresponding standby database (YES) or not (NO). The value is always NO for local destinations.
This column is meaningful at the physical standby site for the ARCHIVED_LOG entries with REGISTRAR='RFS' (which means this log is shipped from the primary to the standby database). If REGISTRAR='RFS' and APPLIED is NO, then the log has arrived at the standby but has not yet been applied. If REGISTRAR='RFS' and APPLIED is YES, the log has arrived and been applied at the standby database.
You can use this field to identify archivelogs that can be backed up and removed from disk.
I think I should use following query on Standby database and not on primary database
select sequence#, registrar, applied
from v$archived_log
where dest_id = 1 -- query running on standby so dest_id = 1 which is standby archive log destination
and registrar = 'RFS'
order by sequence# ;
SEQUENCE# REGISTRAR APPLIED
=====================
58 RFS YES
59 RFS YES
*60* RFS YES
61 RFS YES
So, my shell script should connect to standby database from primary database and evaluate which archive logs to delete after backup from primary machine.
Now I'll generate some gaps on Standby and check query again to make sure what I understand and expect is correct.
Hope I am clear now. Thanks for your help. My bad, I didn't read the manual correctly the first time. -
Fal_srver and fal_client doubt
Hi friends,
I have doubt on this parameter FAL_SERVER and Fal_client.
1.In oracle 11g FAL_CLIENT initialization no more required. then what about FAL_SERVER parameter ?
2.Is it mandatory to initialize the parameters during data guard configuration FAL_SERVER and FAL_CLIENT ?
3.if not mandatory then how automatic gap resolution done in case of dataguard ?
4.what is the role of archiver process in dataguard gap resolution ?
Thanks & Regards
AryaHi,
1.In oracle 11g FAL_CLIENT initialization no more required. then what about FAL_SERVER parameter ?
Yes, after 11g version FAL_CLIENT is no more required. FAL_SERVER parameter is require for data guard configuration.
2.Is it mandatory to initialize the parameters during data guard configuration FAL_SERVER and FAL_CLIENT ?
FAL_SERVER paramater is only for mandatory standby database. because, RFS using FAL_SERVER parameter for request redo changes.
FAL_SERVER is primary database.
3.if not mandatory then how automatic gap resolution done in case of dataguard ?
It is mandatory. When Automatic Gap Resolution is using standby database, RFS process using FAL_SERVER parameter for request
redo from primary for resolution redo gap.
4.what is the role of archiver process in dataguard gap resolution ?
When occur redo gap. Standby send request to primary via RFS, requested archive log sequence#.
NLS send info to ARCH process, and ARCH process connecting to standby RFS and sending requested archived log.
and MRP apply received archived logs.
Regards
Mahir M. Quluzade
http://www.mahir-quluzade.com -
Needs suggestion and help regarding my preparation
I am looking for new job from my existing role. Here all the interviews are I am getting are scenario based and I am not able to reply most of them and as a result getting rejecting in every instance. . In my day to day work I am a part of DBA Monitoring team and everyday job is to monitor tablespace, listener, checking important mountpoint space, instance health check and backup monitoring, it is becoming boring day by day, hence I want to switch. But how to prepare for these typical scenarios based queries, I have both and single and Dataguard setup in my own laptop to play with but I am not getting any idea how to stimulate the different scenario's which can help me to crack the interviews.
Any idea/advice and suggestions will be highly appreciated and will be followed diligently. Thanks in advance.Hi,
i hope ....in real time world ...they expecting more from you than what your doing now....as DBA...
actually as a DBA you have to do practice/play on your laptop or test environments...lots of things are there to do....
how to prepare myself to reply those type problem scenario's and their solutions
practice and ...........practice...practice...practice.......practice...practice...practice......practice...practice...practice......practice...practice...practice...... various scenarious.......on your test machine......
example: 1st thing is you have to learn oracle architecture and gain the sound knowledge on that.... book expert oracle architecture by thomas kyte...
2:backup and recovery ....every interviewer is expecting more info from you ..in this category...i hope..you have to practice various scenorious on your test machine ...
like some of below....take a full backup of your database before proceeding any.R&D....
1:datafile loss...system datafile losss... delete from the disk and try to restore/recover the db....do practice by using offline backup/online bcakup...
2 redo corruption....modifing redo log size....
3)controfile corruption/lost
4)data gaurd archive log missing sequence like gap at standby side..wrt primary.....break the N/W connection try this scenario...practice switch over/fail over scenarious..etc..
5)practice point in time recovery....
6)take hot backup of database practice above ones...like datafile lost/corruption...etc...
7) unconsciously table drop...flashback technology...
8)RMAN..beauty of oracle...lots of thing are there to play on test by using RMAN...
configuration....show all...it will give you the some conf parameter try to read each and every conf parameter do if its configure other than default...if you ..backup..restore...of any file missing...like datafile missing controfile file missing..etc...practice/play RMAN cmds....
now a days every interviewer will ask lots of things about RMAN....
9) do the cloning by using offline backup/online backup/RMAN
http://gavinsoorma.com/2010/06/some-more-rman-recovery-scenarios/
http://docs.oracle.com/cd/B28359_01/backup.111/b28270/rcmintro.htm
http://docs.oracle.com/cd/B19306_01/backup.102/b14191.pdf
once you got the sound knowldge on above things...then performence tuning.... analyzing statspack report/awr...etc..
my suggestion is make a habit of to fallow oracle forum every day..if possible every Hr..and try to read old posts in the form.....reproduce problem by your self and fallow the.experts solution and document those it will useful for you in future ..things makes good for you...all the very best....
thanks,
DBC,
Sr DBA.
Edited by: dbc001 on Mar 10, 2013 10:36 AM -
Hi,
We have 1 standby db for my primary db. Connecting from standby db to primary db is disabled.(Port blocked). From primary to standby only opened. Archives are send by primary to standby and it is appliying perfectly.
For testing purpose, We stopped the recovery process and shut the standby server for a day. Then we started it. Now primary send the archive's to standby and it is applying successfully.
My doubt is,
FAL_Server parameter is used when log archive gap in standby and it send the request to service name which is mentioned in FAL_SERVER to fetch the missing log.
But in my case, standby database can't send the request to primary(Due to port blocked).
Now How primary send the archives?
FAL_Server parameter is not required?
What is the exact role of this parameter?
What oracle do after long archive gap occured?
Please help me .
Thanks in advance.FAL_Server parameter is used when log archive gap in standby and it send the request to service name which is mentioned in FAL_SERVER to fetch the missing log.
But in my case, standby database can't send the request to primary(Due to port blocked).
Now How primary send the archives? You should have configured below two parameters in primary
LOG_ARCHIVE_DEST_2
FAL_SERVER
FAL_Server parameter is not required? Of-course it plays a big role in RAC environments, Its recommended to use this parameter.
What is the exact role of this parameter?
What oracle do after long archive gap occurred?Until unless you wont have GAP that should be fine, AFAIK if you have GAP, you will be in trouble, But the mandatory you have to configure in PRIMARY as FAL_SERVER.
>
user8665771
Newbie
Handle: user8665771
Status Level: Newbie
Registered: Jan 25, 2010
Total Posts: 53
Total Questions: 24 (19 unresolved)
>
Mark the threads as answered and keep the forum clean.
Edited by: CKPT on Apr 11, 2012 9:06 PM -
Physical stand by applying is not initating
configurations:
primary OS : AIX
database versions : 10.2.0.4.0
using ASM file systems
seconday AIX
database versions : 10.2.0.4.0
using ASM file systems
now we have re-started the standby and re-mounted but the apply process is initiating...now there is gap in standby between received and applied..
1 SELECt dest_id, status, type, ARCHIVED_THREAD#, ARCHIVED_SEQ#, APPLIED_THREAD#, APPLIED_SEQ#, SYNCHRONIZed
2* FROM V$ARCHIVE_DEST_status
SQL> /
DEST_ID STATUS TYPE ARCHIVED_THREAD# ARCHIVED_SEQ# APPLIED_THREAD# APPLIED_SEQ# SYN
1 VALID LOCAL 1 13523 0 0 NO
2 VALID PHYSICAL 2 13266 2 8974 NO
Any suggestions?
Thanks,
Raman.Raman,
If you want any help you should not post
- unformatted output. You can format output by wrapping it in tags.
- anything that boils down to 'it doesn't work. Help'.
No one here has any info on your configuration, doesn't know anything about your archive destinations, can't look into the alert log, in the archiver trace files, in the lgwr trace files, and in the RFS trace file of the standby database.
You are kindly requested to do your own analysis *prior* to posting 'It doesn't work', so as to avoid someone has to tear the information out of you. If you do understand the concepts behind the standby mechanism, it is pretty obvious where you need to start troubleshooting.
This is a discussion forum, and it can only provide *help*, it can not take over your work.
Sybrand Bakker
Senior Oracle DBA -
Logical standby | archive log deleted | how to remove gap ???
hi gurus...
i have problem on logical standby
by mistake standby log coming to logical standby has been deleted , now how to fill up the gap ???
ON STANDBY
SEQUENCE# FIRST_CHANGE# NEXT_CHANGE# APPLIED
228 674847 674872 YES
229 674872 674973 CURRENT
230 674973 674997 NO
231 674997 675023 NO
232 675023 675048 NO
233 675048 675109 NO
234 675109 675135 NO
235 675135 675160 NO
236 675160 675183 NO
237 675183 675208 NO
238 675208 675232 NO
239 675232 675257 NO
240 675257 675282 NO
241 675282 675382 NO
242 675382 675383 NO
243 675383 675650 NO
244 675650 675652 NO
245 675652 675670 NO
246 675670 675688 NO
247 675688 675791 NO
248 675791 678524 NO
archive log are shipping to standby location also and getting registered
ALERT LOG OF STANDBY
Fri May 7 12:25:36 2010
Primary database is in MAXIMUM PERFORMANCE mode
RFS[21]: Successfully opened standby log 5: '/u01/app/oracle/oradata/BEST/redo05.log'
Fri May 7 12:25:37 2010
RFS LogMiner: Registered logfile [u01/app/oracle/flash_recovery_area/BEST/archivelog/archBEST_248_1_715617824.dbf] to LogMiner session id [1]
but i dont have standby log after 229 sequence ...
ON PRIMARY
SYS@TEST AS SYSDBA> archive log list
Database log mode Archive Mode
Automatic archival Enabled
Archive destination /u01/app/oracle/flash_recovery_area/TEST/standlogOldest online log sequence 247
Next log sequence to archive 249
Current log sequence 249
what to do next to apply sequences and bring both in sync.
please help me ,,,,
Edited by: user12281508 on May 7, 2010 9:45 AMthanks for response.
no its pure logical standby
i have tried to ftp the archive logs of primary to standby and applied manually
SYS@BEST AS SYSDBA> alter database register logfile '/u01/app/oracle/flash_recovery_area/BEST/archivelog/archBEST_230_1_715617824.dbf';
alter database register logfile '/u01/app/oracle/flash_recovery_area/BEST/archivelog/archBEST_230_1_715617824.dbf'
ERROR at line 1:
ORA-01289: cannot add duplicate logfile
SYS@BEST AS SYSDBA> alter database register logfile '/u01/app/home/archTEST_230_1_715617824.dbf';
alter database register logfile '/u01/app/home/archTEST_230_1_715617824.dbf'
ERROR at line 1:
ORA-01289: cannot add duplicate logfile
any other way ???? -
Archive gap between primary and standby
Hi,
I've a production environment with 2node RAC with ASM as primary and standalone standby with datafiles stored on the filesystem.
Always on the standby side, there is only one archive gap on the standby end, it is not applying it even after arrival of the archivelog.
How to overcome it?
ThanksHello;
Depending upon the query you are using "Real time apply" might show as 1 log behind. Is this possible?
Example from mine :
STANDBY SEQUENCE# APPLIED COMPLETIO
STANDBY2 10711 YES 31-MAY-12
STANDBY2 10712 YES 31-MAY-12
STANDBY2 10713 YES 31-MAY-12
STANDBY2 10714 YES 31-MAY-12
STANDBY2 10715 YES 31-MAY-12
STANDBY2 10716 YES 31-MAY-12
STANDBY2 10717 YES 31-MAY-12
STANDBY2 10718 YES 31-MAY-12
STANDBY2 10719 YES 31-MAY-12
STANDBY2 10720 YES 31-MAY-12
STANDBY2 10721 YES 31-MAY-12
STANDBY2 10722 YES 31-MAY-12
STANDBY2 10723 YES 31-MAY-12
STANDBY2 10724 YES 31-MAY-12
STANDBY2 10725 NO 01-JUN-12 So sequence 10725 is still in progress so it shows 'NO'.
Can you post the query you are using?
Best Regards
mseberg
Edited by: mseberg on Jun 14, 2012 7:28 AM -
Archive log gap is created is standby when ever audit trail is set to DB
Hi
I am a new dba. I am facing a problem at production server that whenever audit_trail parameter is set to db , archive log gap is created at the standby site.
My database version is 10.2.0.4
Os is windows 2003 R2
Audit_trail parameter is set to db only in primary site, after setting the parameter as db when I bounced the database and switched the logfile , archive log gap is created in the standby..I am using LGWR mode of log transport.
Is there any relation beteen audit_trail and log transport ?
Please note that my archive log location of both the sites has sufficient disk space and the drive is working fine.Also my primary and standby is in WAN.
Please help me in this.Any help will be highly appreciated.
Here a trace file which may be helpful to give any opinion.
Dump file d:\oracle\admin\sbiofac\bdump\sbiofac_lns1_6480.trc
Tue Jun 05 13:46:02 2012
ORACLE V10.2.0.4.0 - Production vsnsta=0
vsnsql=14 vsnxtr=3
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Windows Server 2003 Version V5.2 Service Pack 2
CPU : 2 - type 586, 1 Physical Cores
Process Affinity : 0x00000000
Memory (Avail/Total): Ph:16504M/18420M, Ph+PgF:41103M/45775M, VA:311M/2047M
Instance name: sbiofac
Redo thread mounted by this instance: 1
Oracle process number: 21
Windows thread id: 6480, image: ORACLE.EXE (LNS1)
*** SERVICE NAME:() 2012-06-05 13:46:02.703
*** SESSION ID:(534.1) 2012-06-05 13:46:02.703
*** 2012-06-05 13:46:02.703 58902 kcrr.c
LNS1: initializing for LGWR communication
LNS1: connecting to KSR channel
Success
LNS1: subscribing to KSR channel
Success
*** 2012-06-05 13:46:02.750 58955 kcrr.c
LNS1: initialized successfully ASYNC=1
Destination is specified with ASYNC=61440
*** 2012-06-05 13:46:02.875 73045 kcrr.c
Sending online log thread 1 seq 2217 [logfile 1] to standby
Redo shipping client performing standby login
*** 2012-06-05 13:46:03.656 66535 kcrr.c
Logged on to standby successfully
Client logon and security negotiation successful!
Archiving to destination sbiofacdr ASYNC blocks=20480
Allocate ASYNC blocks: Previous blocks=0 New blocks=20480
Log file opened [logno 1]
*** 2012-06-05 13:46:44.046
Error 272 writing standby archive log file at host 'sbiofacdr'
ORA-00272: error writing archive log
*** 2012-06-05 13:46:44.078 62692 kcrr.c
LGWR: I/O error 272 archiving log 1 to 'sbiofacdr'
*** 2012-06-05 13:46:44.078 60970 kcrr.c
kcrrfail: dest:2 err:272 force:0 blast:1
*** 2012-06-05 13:47:37.031
*** 2012-06-05 13:47:37.031 73045 kcrr.c
Sending online log thread 1 seq 2218 [logfile 2] to standby
*** 2012-06-05 13:47:37.046 73221 kcrr.c
Shutting down [due to no more ASYNC destination]
Redo Push Server: Freeing ASYNC PGA buffer
LNS1: Doing a channel reset for next time around...OK
Great details thanks!!
Are The SDU/TDU settings are configured in the Oracle Net files on both primary and standby ? I will see if I have an example.
The parameters appear fine.
There was an Oracle document 386417.1 on this, I have not double checked if its still available. ( CHECK - Oracle 9 but worth a galance )
Will Check and post here.
I have these listed too. ( Will check all three and see if they still exist )
When to modify, when not to modify the Session data unit (SDU) [ID 99715.1] ( CHECK - still there but very old )
SQL*Net Packet Sizes (SDU & TDU Parameters) [ID 44694.1] ( CHECK - Best by far WOULD REVIEW FIRST )
Any chance your firewall limit the Packet size?
Best Regards
mseberg
Edited by: mseberg on Jun 6, 2012 12:36 PM
Edited by: mseberg on Jun 6, 2012 12:43 PM
Additional document
The relation between MTU (Maximum Transmission Unit) and SDU (Session Data Unit) [ID 274483.1]
Edited by: mseberg on Jun 6, 2012 12:50 PM
Still later
Not sure if this helps but I played around will this on Oracle 11 a little, here that example:
# listener.ora Network Configuration File: /u01/app/oracle/product/11.2.0/network/admin/listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = yourdomain.com)(PORT = 1521))
SID_LIST_LISTENER = (SID_LIST =(SID_DESC =(SID_NAME = STANDBY)
(ORACLE_HOME = /u01/app/oracle/product/11.2.0)
(SDU=32767)
(GLOBAL_DBNAME = STANDBY_DGMGRL.yourdomain.com)))
ADR_BASE_LISTENER = /u01/app/oracle
INBOUND_CONNECT_TIMEOUT_LISTENER=120Edited by: mseberg on Jun 6, 2012 12:57 PM
Also of interest
Redo is transporting in 10gR2 versions.
http://www.oracle.com/technetwork/database/features/availability/maa-wp-10gr2-dataguardnetworkbestpr-134557.pdf
Edited by: mseberg on Jun 6, 2012 1:11 PM
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