Data Guard Managed Recovery Process Is Not Working
Mar 15, 2012
My standby database was working fine which was running in maximum performance mode .Suddenly i found that logs are not being applied though archived logs are received from primary database.i issued the command in mount mode: alter database recover managed standby database disconnect from session;
altered database this command runs successfully. but MRP process in not initiated which i confirmed with the query (select process,status from v$managed_standby;)
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Sep 10, 2012
How to find applied_time in standby database managed recovery mode (*PHYSICAL STANDBY*).
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Dec 5, 2012
this query works ok in oracle.dataAccess but not in Oracle.ManagedDataAccess.Connector does not raise an error. It just stalls.
Dim PKRetrieveCommand As New OracleCommand : PKRetrieveCommand.Connection = JobConnection
PKRetrieveCommand.CommandText = " INSERT INTO TMP_SEQ (FIELD1) VALUES (DBOID_SEQ.NEXTVAL) RETURNING FIELD1 INTO :dboid"
PKRetrieveCommand.Parameters.Add("dboid", OracleDbType.Decimal, ParameterDirection.Output)
PKRetrieveCommand.ArrayBindCount = allInserts.Length
PKRetrieveCommand.ExecuteNonQuery()TMP_SEQ
Is a temporary table that deletes rows on commit, Field1 is a numeric type and DBOID_SEQ. is a sequence.
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Mar 20, 2013
I am using 11.2.0.2 Data Guard.
I had set Delay=60 for Standby Database in init parameters of Primary Database and bounced both Primary and Standby DB.
But as soon as i perform log switch in Primary DB it is being applied in Standby DB immediately ignoring my Delay parameter.
The Physical Standby is mounted and redo apply is enabled.
Parameters:
-----------------
LOG_ARCHIVE_DEST_1=
'LOCATION=/data/dg/arch1/chicago/
VALID_FOR=(ALL_LOGFILES,ALL_ROLES)
DB_UNIQUE_NAME=chicago'
LOG_ARCHIVE_DEST_2=
'SERVICE=boston ASYNC DELAY=60
VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE)
DB_UNIQUE_NAME=boston'
LOG_ARCHIVE_DEST_STATE_1=ENABLE
LOG_ARCHIVE_DEST_STATE_2=ENABLE
Standby:
-------------
SEQUENCE# APPLIED
---------- ---------
1208 YES
1209 YES
1210 YES
1211 YES
1212 YES
1213 YES
1214 YES
1215 YES
1216 IN-MEMORY
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Oct 27, 2007
Is RFS an background process.How do I check if its working or not.Can I stop and start RFS.
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Apr 26, 2007
just realised the data guard configuration seems to be workin but the error kepps appearing on the alert log of both primary and physical standby that i configured. below is my primary and standby pfiles.
primary
*.db_unique_name='CPASPRD'
*.service_names='CPASPRD'
*.log_archive_dest_1='LOCATION=/Oracle/archivelog/'
*.log_archive_format='%t_%s_%r.dbf'
[code]....
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Apr 7, 2011
I have a 10gR2 standby database.Normally when logs are created in primary they automatically get shipped to standby but sometimes I get FAL request rejected or connection lost contact error and the logs are not automatically shipped .
Then when I manually switch a logfile the RFS process copies the old logs into DR site(around 4 or 5 logs).What is the problem...How to resolve this???
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Sep 5, 2013
in a RAC multi-node environment with single instance dataguard..Recovery is not running automatically I have to re-run the recovery command to make them sync and this command works for already archived log files no upcoming archive log file applied I have to re-run the recovery command again for newly archived log files.
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Mar 29, 2011
I have a SAN systems with primary and secondary interfaces. i need to know what is best practice of oracle to use disaster recovery features, with automatic or manual failover concept.
example.
Primary Server Duty Station 1 New York
Secondary Server Duty Station 2 Los Angelous
requirement : If primary server in DS 1 gets fire and completed get down then secondary server DS 2 should become primary server and reply to client request with AUTO or Manual failover concept.
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Apr 23, 2013
I have done the configs as per the guide here [URL] .... This is a physical standby db
Primary initBP1.ora
compatible = "11.2.0"
log_archive_dest_1 = "LOCATION=H:oracleBP1oraarchBP1arch VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=BP1"
log_archive_dest_2 = "SERVICE=BP1_DR VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE)
[code]...
How I do I make sure that the DR site is recovering automatically ?
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Jan 6, 2012
I have one database which is recently upgraded from oracle 8.1.5 to oracle 10.2.0.4.The database is having around 300 tablespace and total size of the database is 1.5 TB.
The database was created in oracle 8i and all the teblespace were DMT(Dictionary Managed Tablespace) .Usually after up gradation all the tablespace are in DMT mode. Now my requirement is to convert all the tablespace into LMT (Locally Managed Tablespace) so that I can AVAIL ALL THE FEATURES OF LMT.
This database is a mission critical database and very less downtime can be allowed.
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Mar 31, 2011
i have done oracle data guard between two databases (database A is the primary) and (database B is the standby), and it was working fine for two weeks, then the network admin did some changes on the firewall on standby side, which made the primary database can not write on standby redo log , so archives was generated on primary and do not generated on standby by, now we solve the firewall probelm and new archives generated on primary is generated on atandby too, but now i have a gap in archives on standby database and standby database now is not synchronized with primary database, and data changes happen on primary is not reflected on standby, also archives that were generated on primary and did not generated on standby during the problem time is not registered in V$ARCHIVED_LOG neither on primary database nor on standby database
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Dec 21, 2010
Do we have any plan to create DR ( disaster site) for ORACLE 10G standard version. Since, Data Guard is not available with Standard version, can we have any another plan for the same.
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Aug 25, 2012
1.What are the basic things we need to analyze before we recommend the business to go for oracle Dataguard for DR setup?
2. Do you know any technology that will replicate the schema from one datacenter[one primary database ] to another datacenter [secondary or replication database]?
3. What are the various option to configure the disaster recovery plan at schema level?
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Nov 9, 2012
I'd like to stop Recovery in specific time. For instance ; My db works Day-1 and Every day Recovery starts 20:00 and finish 05:00. If it is possible that when DB time reach to sync 03:00, I'd like to stop recovery.
DB version Oracle 10.2.0.5 .....
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Dec 1, 2011
I have created dataguard between two instances hosted in two different servers. I have done switchover from primary to standby & then again standby to primary with DGMGRL utility.
1- When I done switchover to primary & trying to open standby database in readonly mode it was giving below error-
ORA-01154: database busy. Open, close, mount, and dismount not allowed now
Why this error was coming ?
2- As I was not able to open standby database in read only mode, I have executed below command-
alter database recover managed standby database disconnect from session;
which return an error as-
ORA-01153: an incompatible media recovery is active
After this I have executed-
alter database recover managed standby database cancel;
which executed successfully.
& then after standby database open in read only mode.
Why above error was coming ?
3- After this I had tried to check the checkpoint_change# & controlfile_change# from primary database and result shows both number were different.
Why they are not matching ?
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Oct 22, 2013
i have found an issue regarding log archiving on dest1. yesterday one sequence number 76871 not archive to dest1.alert logfile content as follow. i configure standby and ship archive manually with window copy command. i need this archive to complete recovery on standby database.
Mon Oct 21 09:29:28 2013
ARC2: Completed archiving log# 3 seq# 76869
Mon Oct 21 09:39:28 2013
Thread 1 advanced to log sequence 76871
Current log# 2 seq# 76871 mem# 0: D:ORACLEORADATAORC1REDO02.LOG
[code]....
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Feb 7, 2011
I have a doubt regarding the process the RMAN follows for restore and recovery of the database.
My Level 0 full backup completes on Saturdays at around 11 am after taking 8 hours (It starts at 3am).On Sunday, I ask RMAN to restore (on a different box) till Saturday 11:30 am.Then, after the restore is successful, I recover it till 11:45 am.
The recovery also goes fine and Iam able to clone to test box.
Till what time is the database restored? I assume its till 11 am since the L0 backup finishes at 11 am though I have asked it to restore till 11:30 am
During the recovery, ONLY the archives generated between Saturday 3 am and till the time i asked for recovery (Saturday 11:45 am ) are required. But, checking the recovery log file, i was surprised to see that RMAN has restored archive files starting from Friday 9:30 pm (Much before the time the Level 0 backup even started).
why does RMAN require the old archive log files.
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Aug 18, 2012
We have an Oracle application 12.1.1 running with oracle database 10.2.0.4 and we're using HP-UX itanium 11i v3 servers for both application and database, our requirement is to establish a Disaster Recovery site out of our building to ensure data protection.
What is the best option we can use to reduce the cost and to implement the DR site? can we use data guard ? and will be the configurations and requirements for it?
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Sep 19, 2012
I noticed that my standby server was behind the prduction one.In the error log I noticed: ORA-00600: internal error code, arguments: [kcbr_apply_change_11], [], [], [], [], [], [], [], [], [], [], []
then
MRP0: Background Media Recovery terminated with error 448
Recovered data files to a consistent state at change 286116915
This error happens in sequence: Recovery of Online Redo Log: Thread 1 Group 4 Seq 8830 Reading mem 0I found this archive log in standby and it is same size as in the production one.
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Oct 5, 2011
I have created Replication process for a single table using the below mentioned script.
connect sys/afccv@afccv as sysdba
show parameter open_cursor
create user STRMADMIN identified by STRMADMIN;
ALTER USER STRMADMIN DEFAULT TABLESPACE USERS TEMPORARY TABLESPACE TEMP QUOTA UNLIMITED ON USERS;
GRANT CONNECT, RESOURCE, AQ_ADMINISTRATOR_ROLE,DBA to STRMADMIN;
execute DBMS_STREAMS_AUTH.GRANT_ADMIN_PRIVILEGE('STRMADMIN');
connect sys/vxmldb@vxmldb as sysdba
[code]....
According to Alert log file Replication process started( Refer Alert log content below
Wed Oct 05 12:45:53 2011
Streams CAPTURE CP01 for STRMADMIN_CAPTURE started with pid=256, OS id=8692
Starting persistent Logminer Session with sid = 41 for Streams Capture STRMADMIN_CAPTURE
Wed Oct 05 12:46:20 2011
LOGMINER: Parameters summary for session# = 41
[code]....
Now When I am checking the apply status then it is showing Dequeue message
SQL> l
1* select apply_name,state,DEQUEUE_TIME from V$STREAMS_APPLY_READER
SQL> /
APPLY_NAME STATE DEQUEUE_TIME
------------------------------ ----------------- --------------------
STRMADMIN_APPLY DEQUEUE MESSAGES
when I am checking the number of rows on both tables (source and destination) , at destination it is not applying any thing.
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May 6, 2011
oracle version: 10gr2
os:windows 32
I have configured a physical standby database.
I have set the physical standby database to open read mode for a short while.
according to [URL] in order to set db in for from open read-only to applying redo data
Quote:
To change the standby database from being open for read-only access to performing Redo Apply:
Terminate all active user sessions on the standby database. Restart Redo Apply. To start Redo Apply, issue the following statement:
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE
2> DISCONNECT FROM SESSION;
To enable real-time apply, include the USING CURRENT LOGFILE clause:
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE
2> USING CURRENT LOGFILE;
this is what happen
SYS@ngdr> alter database recover managed standby database disconnect session;
alter database recover managed standby database disconnect session
*
ERROR at line 1:
ORA-00274: illegal recovery option SESSION
SYS@ngdr> alter database recover managed standby database using current logfile;
okay since I encountered the illegal recovery options session, I decided to use alter database recover managed standby database using current logfile; now the session seems to be hanging forever.
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Jul 5, 2011
We have physical data guard configured version (10.2.0.4). We are in need to upgrade primary & standby database to 11G R2. Can we perform rolling upgrade.
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May 7, 2013
we have given shutdown abort to a database.At the next startup SMON process will do instance recovery. If it contains committed as well as uncommitted transactions on what basis or how the SMON process will roll forward or rollback the transactions and from where it will get these informations or data?
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Feb 7, 2012
We are in the process of setting up a DR environment for our SAP and Oracle databases . The netapp and our architects came up with solution as follows .
1.Standby databases are built for all production databases.
2.The SAP file systems are replicated to the secondary site
3.The Oracle logfiles and controlfiles are replicated by netapp snap mirror every 10 mins interval
4.The database is recovered through recover standby database every 15 mins at standby site
5.Please note there is no data guard involved .
6.To test the failover , the mirror is broken .The standby controlfile is replaced with Production controlfile and Redo logs files.
7.The standby database issued a startup comnmand and it worked .
Would like to know whether the step 6 is a correct approach ? I tried to convince the architects that this will result in a very disastrous situation for us but none is listened to .
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Oct 17, 2012
Controlling User Access to Tables in a Logical Standby Database can be controlled using the following command:
ALTER DATABASE GUARD STANDBY;
My simple question is: how can I know the current active Guard setting in the standby database?
Oracle 11g R2.
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Oct 28, 2013
I have Oracle Database 11g Release 11.2.0.3.0 - 64bit Production With the Real Application Clusters and Automatic Storage Management. OS is Windows server 2008. Database size is approx 273 GB. I am running RMAN full back from a node with archive log all. With only 1 channel. Total backup size is almost 230 GB.
It is taking about 2 hours to complete the backup in the evening, but when i take same backup at midnight its takes about 1:15 hrs.
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Oct 9, 2012
I am getting error when i try to restore one tablespace using RMAN.
RMAN> restore tablespace test;
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00558: error encountered while parsing input commands
RMAN-01009: syntax error: found "test": expecting one of: "double-quoted-string, identifier, single-quoted-string"
RMAN-01007: at line 1 column 20 file: standard input
But it's working for other tablespace
RMAN> restore tablespace users;
Starting restore at 10-OCT-12
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_DISK_1: restoring datafile 00004 to /u01/app/oracle/product/11.2.0/db_1/dbs/TEST/users01.dbf
[code]...
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Oct 4, 2012
I'm on a Windows server 2003 R2 64 bit, database is 11.1.0.7. From RMAN connected to the target and the catalog, this is a show all;
RMAN> show all;
RMAN configuration parameters for database with db_unique_name ORCL are:
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 3 DAYS;
CONFIGURE BACKUP OPTIMIZATION OFF;
CONFIGURE DEFAULT DEVICE TYPE TO DISK;
CONFIGURE CONTROLFILE AUTOBACKUP ON;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO 'F:oracleadmin
[code]....
I'm running incremental backups, a level 0 on sunday and a level 1 the other days of the week, this is the ctl file:
LEVEL 0:
connect target /@ORCL
connect catalog rman/rmanpw@rmancat
RUN
{
[code]....
The level 0 does delete the archive logs (because of the delete input). Each backupset has two copies of the archive logs (which is what I want), and I expected the logs to be deleted after being backed up 2 days (each day is twice, 2 days = 4 times). But it's not deleting the logs, even after 6 runs.
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Feb 14, 2012
I am trying to restore a backup from a live server to a dev server. Have moved nackup sets. Created a windows service to match the old sid on live system. copied the pfile from live and changed the locations of the folders to suit dev. set oracle_sid to the new sid(as created to match live)
connected to rman
startup nomount
set dbid to the live number
restore controlfile
alter database mount
catalog'd all the backupsets
[code]....
but it fails when it tries the restore .. see below ..The path it is showing is the old path from the live server, so it appears to eb ignoring my set newname statements even though they succeeded earlier - should be restoring them to d:oracleoradatasun43dev ? Does the whole thing have to be put inside one run block or can I put bits in one run block and other bits outside of it etc?
RMAN> restore database;
Starting restore at 14-FEB-12
using channel ORA_DISK_1
using channel ORA_DISK_2
channel ORA_DISK_1: starting datafile backupset restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
[code]....
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