2nd physical standby (dataguard)
Hi all
11.2.0.3.11
Can you give me docs on how the program installation/create/configure a 2nd physical standby (dataguard)?
Thank you all,
MK
Hello;
Sorry for the delay. I live on the other side of the world, and I have a few questions to do with my family.
Port 1521 is the default value for the listener, so if your listener uses different ports, they need to be taken into account in the firewall.
The error you are getting is related to network. You check the configuration of the receiver and confirm the port you are using.
Best regards
mseberg
Tags: Database
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DataGuard (activate a physical standby as a stand-alone database database)?
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Can I please ask advice on how it would activate a physical database ensures for 11.2.0.4?
Note - I do not want to return the "standby" to watch again...
Note 1 – I don't have (and don't use flashback technology to do this) - so I can't use a watch "snapshot"...
Note 2 - the 'primary' current cannot be touched.
Something like below?
Repeat stop applies to pending
SQL > alter database recover managed standby database cancel;
Stop redo pending transaction logs.
PRIMARY
SQL > ALTER SYSTEM SET LOG_ARCHIVE_DEST_STATE_2 = DELAY;
Activate and open the database physical sleep.
Physical STANDBY
SQL > ALTER DATABASE ENABLE PENDING DATA base;
SQL > STARTUP MOUNT FORCE;
SQL > alter database base_de_donnees ensures together to improve performance;
SQL > ALTER DATABASE OPEN;
Concerning
It wouldn't affect Production (primary). It's just the steps of failover.
The same applies to the role transition, but in a role transition, you must first pass at the primary level of Eve and the day before, you must run the digital switchover to make primary.
You could refer to this https://docs.oracle.com/cd/E11882_01/server.112/e41134/role_management.htm#SBYDB4769 you would get to the difference of the steps for the passage and failover.
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Also
Using Active Data Guard and discoverer of generation of Oracle E-Business Suite release 12.1 reports and a database in Oracle 11 g or 12 c pending physical (Doc ID 1070491.1)
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Here's my question after tons of research and test without have the right solutions.
Target:
(1) I have a 12.1.0.2 database unique main enterprise 'testdb' as database instance running on the server "node1".
(2) I created physical standby database "stbydb" on the server "node2".
(3) DataGuard running on the mode of MaxAvailability (SYNC) with roll forward in real time 12 default c apply.
(4) primary database has 3 groups of one-man redo. (/oraredo/testdb/redo01.log redo02.log redo03.log)
(5) I've created 4 standby redo logfiles (/oraredo/testdb/stby01.log stby02.log stby03.log stby04.log)
(6) I do RMAN backup (database and archivelog) on the site of relief only.
(7) I want to use this backup for full restore of the database on the primary database.
He is a DR test to simulate the scenario that has lost every primary & Eve total servers.
Here is how to save, on the database pending:
(1) performance 'alter database recover managed standby database Cancel' to ensure that compatible data files
(2) RMAN > backup database;
(3) RMAN > backup archivelog all;
I got elements of backup and copied to primary db Server something like:
/Home/Oracle/backupset/o1_mf_nnndf_TAG20151002T133329_c0xq099p_.BKP (data files)
/Home/Oracle/backupset/o1_mf_ncsnf_TAG20151002T133329_c0xq0sgz_.BKP (spfile & controlfile)
/Home/Oracle/backupset/o1_mf_annnn_TAG20151002T133357_c0xq15xf_.BKP (archivelogs)
So here's how to restore, on the main site:
I clean all the files (data files, controlfiles oder all gone).
(1) restore spfile from pfile
RMAN > startup nomount
RMAN > restore spfile from pfile ' / home/oracle/pfile.txt' to ' / home/oracle/backupset/o1_mf_ncsnf_TAG20151002T133329_c0xq0sgz_.bkp';
(2) modify pfile to convert to db primary content. pFile shows below
*.audit_file_dest='/opt/Oracle/DB/admin/testdb/adump '
* .audit_trail = "db".
* full = '12.1.0.2.0'
*.control_files='/oradata/testdb/control01.ctl','/orafra/testdb/control02.ctl'
* .db_block_size = 8192
* .db_domain = "
*.db_file_name_convert='/testdb/','/testdb /'
* .db_name = "testdb".
* .db_recovery_file_dest ='/ orafra'
* .db_recovery_file_dest_size = 10737418240
* .db_unique_name = "testdb".
*.diagnostic_dest='/opt/Oracle/DB '
* .fal_server = "stbydb".
* .log_archive_config = 'dg_config = (testdb, stbydb)'
* .log_archive_dest_2 = "service = stbydb SYNC valid_for = (ONLINE_LOGFILE, PRIMARY_ROLE) db_unique_name = stbydb'"
* .log_archive_dest_state_2 = 'ENABLE '.
*.log_file_name_convert='/testdb/','/testdb /'
* .memory_target = 1800 m
* .open_cursors = 300
* runoff = 300
* .remote_login_passwordfile = "EXCLUSIVE."
* .standby_file_management = "AUTO".
* .undo_tablespace = "UNDOTBS1.
(3) restart db with updated file pfile
SQLPLUS > create spfile from pfile='/home/oracle/pfile.txt'
SQLPLUS > the judgment
SQLPLUS > startup nomount
(4) restore controlfile
RMAN > restore primary controlfile to ' / home/oracle/backupset/o1_mf_ncsnf_TAG20151002T133329_c0xq0sgz_.bkp';
RMAN > change the editing of the database
(5) all elements of backup catalog
RMAN > catalog starts by ' / home/oracle/backupset / '.
(6) restore and recover the database
RMAN > restore database;
RMAN > recover database until the SNA XXXXXX; (this YVERT is the maximum in archivelog backups that extends beyond the scn of the backup of the data file)
(7) open resetlogs
RMAN > alter database open resetlogs;
Everything seems perfect, except one of the file log roll forward pending is not generated
SQL > select * from v$ standby_log;
ERROR:
ORA-00308: cannot open archived log ' / oraredo/testdb/stby01.log'
ORA-27037: unable to get file status
Linux-x86_64 error: 2: no such file or directory
Additional information: 3
no selected line
I intended to use the same backup to restore primary basic & helps record traffic and the downtime between them in the world of real output.
So I have exactly the same steps (except STANDBY restore CONTROLFILE and not recover after database restore) to restore the database pending.
And I got the same missing log file.
The problem is:
(1) complete alert.log filled with this error, not the concern here
(2) now repeat it in real time apply won't work since the Party shall LGWR shows always "WAITING_FOR_LOG."
(3) I can't delete and re-create this log file
Then I tried several and found:
The missing standby logfile was still 'ACTIVE' at present RMAN backup was made.
For example, on db standby, under Group #4 (stby01.log) would be lost after the restoration.
SQL > select GROUP #, SEQUENCE #, USE (s), the STATUS from v$ standby_log;
GROUP # SEQUENCE # USED STATUS
---------- ---------- ---------- ----------
4 19 ACTIVE 133632
5 0 0 UNASSIGNED
6 0 0 not ASSIGNED
7 0 0 UNASSIGNED
So until I take the backup, I tried on the primary database:
SQL > alter system set log_archive_dest_state_2 = delay;
This was the Group of standby_log side Eve #4 was released:
SQL > select GROUP #, SEQUENCE #, USE (s), the STATUS from v$ standby_log;
GROUP # SEQUENCE # USED STATUS
---------- ---------- ---------- ----------
4 0 0 UNASSIGNED
5 0 0 UNASSIGNED
6 0 0 not ASSIGNED
7 0 0 UNASSIGNED
Then, the backup has been restored correctly without missing standby logfile.
However, to change this primary database means break DataGuard protection when you perform the backup. It's not accept on the production environment.
Finally, my real questions come:
(1) what I do may not do on parameter change?
(2) I know I can re-create the control file to redo before delete and then recreate after. Is there any simple/fast to avoid the standby logfile lost or recreate the lost one?
I understand that there are a number of ways to circumvent this. Something to keep a copy of the log file waiting restoration progress and copy up one missing, etc, etc...
And yes I always have done no real-time applies "to the aid of archived logfile" but is also not accept mode of protection of production.
I just want proof that the design (which is displayed in a few oracle doc Doc ID 602299.1 is one of those) that backs up data backup works effectively and can be used to restore the two site. And it may be without spending more time to resume backups or put the load on the primary database to create the database before.
Your idea is very much appreciated.
Thank you!
Hello
1--> when I take via RMAN backup, RMAN does not redo log (ORL or SRL) file, so we cannot expect ORLs or SRL would be restored.
2nd--> when we opened the ORL database should be deleted and created
3rd--> Expecting, SRL should not be an issue.we should be able to do away with the fall.
DR sys@cdb01 SQL > select THREAD #, SEQUENCE #, GROUP #, STATUS from v$ standby_log;
THREAD # SEQUENCE # GROUP # STATUS
---------- ---------- ---------- ----------
1 233 4 ACTIVE
1 238 5 ACTIVE
DR sys@cdb01 SQL > select * from v$ logfile;
GROUP # STATUS TYPE MEMBER IS_ CON_ID
---------- ------- ------- ------------------------------ --- ----------
3 /u03/cdb01/cdb01/redo03.log no. 0 online
/U03/cdb01/cdb01/redo02.log no. 0 2 online
1 /u03/cdb01/cdb01/redo01.log no. 0 online
4 /u03/cdb01/cdb01/stdredo01.log WATCH No. 0
/U03/cdb01/cdb01/stdredo02.log EVE 5 No. 0
DR sys@cdb01 SQL > ! ls - ltr /u03/cdb01/cdb01/stdredo01.log
method: cannot access the /u03/cdb01/cdb01/stdredo01.log: no such file or directory
DR sys@cdb01 SQL >! ls - ltr /u03/cdb01/cdb01/stdredo02.log
-rw - r-. 1 oracle oinstall 52429312 17 Oct 15:32 /u03/cdb01/cdb01/stdredo02.log
DR sys@cdb01 SQL > alter database force claire logfile 4;
change the database group claire logfile 4
*
ERROR on line 1:
ORA-01156: recovery or current flashback may need access to files
DR sys@cdb01 SQL > alter database recover managed standby database cancel;
Database altered.
DR sys@cdb01 SQL > change the database group claire logfile 4;
Database altered.
DR sys@cdb01 SQL > ! ls - ltr /u03/cdb01/cdb01/stdredo01.log
-rw - r-. 1 oracle oinstall 52429312 17 Oct 15:33 /u03/cdb01/cdb01/stdredo01.log
DR sys@cdb01 SQL >
If you do, you can recreate the controlfile without waiting for redo log entry...
If you still think it's something is not acceptable, you must have SR with support to analyze why he does not abandon SRL when controlfile_type is "underway".
Thank you
-
EBS R12.2.4 physical Standby
Hi all
EBS R12.2.4
11 GR 2
Rhel6.5
We want to create both physical standby databases cascading. The first will be used for the statement and the 2nd waterfall is Dr.
Can you help me find documents on how configure/install this kind of scenario?
Thank you very much
JC
Jenna_C wrote:
Hi all
EBS R12.2.4
11 GR 2
Rhel6.5
We want to create both physical standby databases cascading. The first will be used for the statement and the 2nd waterfall is Dr.
Can you help me find documents on how configure/install this kind of scenario?
Thank you very much
JC
Please see:
Using Active Data Guard of generation of Oracle E-Business Suite 12.2 version reports and databases Oracle 11 g (Doc ID 1944539.1)
Business Continuity for Oracle E-Business Suite Release 12.2 using Oracle Database 11g (GR 11, 2) physical standby (Doc ID 1491855.1)
https://blogs.Oracle.com/stevenChan/entry/data_guard_11_2_0
https://blogs.Oracle.com/stevenChan/entry/oracle_active_data_guard_11
Thank you
Hussein
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Test of physical Standby DB 11 g
Hi all
My company is considering a DR test in a few months, and since I never did this until I was wondering what would be the best way to go on the DB pending tests. This is a database of 11G (11.2.0.3). I read the following articles:
http://gavinsoorma.com/2009/09/11g-snapshot-standby-for-real-time-testing/
http://www.Pythian.com/blog/testing-a-physical-standby-database-in-Oracle-10G/
http://www.Oracle.com/technetwork/articles/SQL/11g-DataGuard-083323.html
From what I can tell the snapshot method is the easiest. My main question is when the primary method still must send the archive logs to the waiting or can I defer only to archive log shipping? How we test normally the site of DR is completely disconnect the network connections and put everything in place for the primary will not be able to speak to the waiting and vice versa. Or is the best method to follow the other article that speaks using the flashback database?
Thanks in advance for your help.
From what I can tell the snapshot method is the easiest. My main question is when the primary method still must send the archive logs to the waiting or can I defer only to archive log shipping?
Are you in 11g, yes instant is a nice feature to test your intelligence. If you enable the destination, there is no problem. Meanwhile if too many records are generated and then it takes a long time to get a site to DR.
How we test normally the site of DR is completely disconnect the network connections and put everything in place for the primary will not be able to speak to the waiting and vice versa
You can also completely disconnect the primary DR and tests after the conversion of the physics on the eve of the snapshot if it is your condition to do so.
Or is the best method to follow the other article that speaks using the flashback database?
In traditional flashback, you will need to take care just like the creation of restore point with guarantee, mode standby manually and run again then flashback to the restore point. Snapshot is really simple and easy to use. If am in your position of course I use the standby database snapshot.
-
Hello
11.2.0.1
We have a DEV database which is also as critical as the PROD db since there are many strategic projects running on it.
This DEV database has been configured with dataguard physical standby on the DR server.
Well, that's what I read in the documents only as I'm newly taken over as a dba. Setup has been done outsourced
by 3rd party, and I can't talk to the implentors, as they were long gone.
When I check the DR server that only the PROD is running and the DEV was arrested for the last 12 months.
My question is if the physical standby is stopped for almost a year, can it still be activated? or is it still valid?
This will affect the performance of the primary database? Since he could always check heartbeat for her? or delay some process as archivers?
How to disable the physical standby from the primary database?
Thank you
Petra k.
Hello;
"If the physical standby is stopped for almost a year, can it still be activated? or is it still valid? »
No and no. Even a tiny production database would have generated and remove too many archives in a year for the old standby at any value. Rebuild it.
How to disable the physical standby from the primary database?
You could do just that: (primary side)
ALTER system set log_archive_dest_state_2 = reporter;
And you can clean all the parameters for DG too.
How to remove a primary database data protection Configuration (Doc ID 733794.1)
Best regards
mseberg
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How to open a physical standby database "Manual" in read/write mode
Hello
I am running Oracle Database 10g Release 10.2.0.3.0 - 64 bit Standard Edition Production on Linux version 2.6.9 - 42.0.8.ELsmp ([email protected]) (version gcc 3.4.6 20060404 (Red Hat 3.4.6 - 3))
I created a physical standby database, but since I am running Standard Edition, I don't use the features in DataGuard. I use the utility rsync to copy on the data pending archivelogs, and I periodically applied to the standby database.
The standby database is started in this way:
startup nomount pfile='/u01/oradata/orcl/initorcl.stdby';
ALTER database base_de_donnees eve of Mount;
Everything works perfectly, I can "open database in read-only alter" and then I can make selects in the tables to confirm that everything is up-to-date.
The thing is, if I stop the database and then perform the boot simply:
stop immediately;
start-up;
The database opens with an error message, but it is always in read-only mode...
I read that the default behavior for a database ensure must open read-only, as I am experiencing, but I would like to know what is the right way to open it in read-write mode correctly (I understand that after this, my watch will not standby more and I need to recreate my database pending).
Thank you
CarpetTry: -.
ALTER database activate standby database;
This should open read-write (you will not be able to recover thereafter)
-
Problem with data hold creating a Physical Standby Database turorial
There is a tutorial for creating a Data Guard Physical Standby Database:
http://www.Oracle.com/technology/OBE/11gr1_db/HA/DataGuard/physstby/physstdby.htm
I tried to install it on two servers. One for a primary database (deuxieme for the physical standby.
I have the error on creating C. the database of watch on the #6 action network:
«On the rescue system, set the ORACLE_SID to your < SID physical standby > environment variable (i.e. orclsby1) and start the instance in NOMOUNT mode with the text initialization parameter file.»
When I try to connect to the instance that is idle, there is an error pops up:
C:\ > sqlplus / as sysdba
SQL * more: version 11.1.0.7.0 - Production Thursday, May 21, 16:28:10 2009
Copyright (c) 1982, 2008, Oracle. All rights reserved.
ERROR:
ORA-12560: TNS:protocol adapter error
I ' v checked listener, and it is managed. There is no database service because there is still no database.
The question is did some data installed a guard configuration using this tutorial? Are there errors in there? What should I do to complete the installation?On Windhose for any service must have been created using the oradim command.
Oracle tutorials are usually centered on Unix, because Windhose is an odd man out, so they do not discuss.
"Please do the needful" and create the service before the beginning of the instance in nomount modeTip: oradim is documented and has a help = clause of y.
IIRC there is an option in control database (in the part of the interview) that automates everything.
----------------
Sybrand Bakker
Senior Oracle DBAExperts: those who read documentation
-
Physical standby Archive newspapers vs
Hi all
11 GR 2
Rhel6.5
I'm confused how archivelogs be appied physical standby.
CASES1:
Assuming I backup my primary Db with RMAN full backup now.,
then question crosscheck backup and delete obsolete. It will remove all archivelogs not yet taken to the waiting?
CASE2:
Right now my database pending is on a mode "real apply", so updates to the primary level is done directly on the eve as well, even if the archive logs have not yet carried.
Assuming that I will delete archive records at the primary level, such that it cannot carry, will be the sleep EEG 'gaps' in its Archives logs status?
Your comments are appreciated hightly.
Thank you very much
JC
Read in the mseberg response:
A way to remove applied log file stored in the backup database
How to ensure that RMAN is NOT delete archived logs that have not yet shipped to standby [394261.1 ID]
Kind regards
Juan M
-
Redolog files to physical standby standby in 11g
Hi all
Configure a physical in 11 g standby database on Linux.
My first question is, Create SRL (Standby Redo Logs)-
Is - mandatory to set up physical standby?
If I create SRL , what would be the advantage for the installation of DR?
If I ignore it, what would be the downside for the installation of DR?
Hello;
Laughing out loud
But it is a good idea.
If your database pending is in maximum protection or maximum availability mode you need.
If you use Real Time apply on Standby Database you need.
If you use cascading Destinations you need.
If you create both primary and Standby you pass quickly without additional measures or issue.
Redo Eve can also buffer it again entering.
Best regards
mseberg
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How to get down the database since the failure of the upgrade in case of physical standby
Hi people,
Can you please tell me how to get down the has no upgrade in case of physical standby database?
Kind regards
Taoqir
The generic steps to upgrade db at the dg environment
1. stop the database pending the application of recovery logs
2. stop the recovery of his expedition logs
3. upgrade the primary database server executable files
4 level database server executable files shall ensure that
5. switch to the main database using DBUA or upgrade scripts
6 mount the backup database
7 reactivate shipping again Eve elementary school
8 restart the recovery process run on the standby database again progress apply
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Hi all
We plan to set up physics in waiting for our CARS database. Can anyone let us know how config in the case of RAC database? Also after you set up the night before with the protection mode max is possible to change physical Snapshot standby standby for our app objective test team?
RDS,
Varun
Hi Varun,
I recently put in place an environment of two RAC nodes to a custodian of data environment is only a single node. Nothing very special when configuring Data Guard in a CCR environment. The most important thing is that each RAC instance must send waiting for BD archivers.
This setting is configured the destination archive database pending.
Once the archivers reach the Data Guard environment are applied correctly and consistently to the comics of the day before.
You have this MOS score that helps the creative process.
Create a sleep using RMAN Duplicate (RAC or Non-RAC) (Doc ID 1617946.1)
Yes, you can convert the Standby database to a snapshot of BD, are supported read/write operations.
Use the command alter database convert on the eve of the snapshot;
And when people apps to complete the test, convert it to sleep with the command:
ALTER database convert physical standby;
And the standby for the role of sleep and if you turn on the AutoRecover apply all redo it in anticipation of is to apply because you put the backup database into the snapshot mode.
Is very powerful and easy.
I hope to help.
Best regards
Arturo
-
Block corruption on the physical Standby database
Hi all
Operating system: HP Unix
DB: 10.2.0.4
We are facing corruption block on our database of physical intelligence. The same has been detected using commands below and several blocks were found to be corrupt.
RMAN > backup validate check the logic of database;
SQL > select * from v$ database_block_corruption
As it is a basic data watch no backup is present, pulling the command below did not help
RMAN > list of corruption block restoration;
I think taking the incremental backup of the PR and the same application on DR, y at - it another way to eliminate corruption said?
Kind regards
Sphinx
You can check below link if corruption block results nologging, there is a thread already with the question.
Block corruption on the standby database
10.5.2 steps of recovery for databases physical standby
-
Test failover with physical standby
Hello
I have a primary at base of 11.2.0.4 (cars) and an instance of unique physical standby (on a virtual machine).
I need to test failover.
I'm looking some procedure or steps.
Can they be valid?
On primary
- change the built-in system again to standby_db_name;
- alter system archive log current;
- Stop the shipment of archive: alter system set log_archive_dest_state_2 = "DAVID";
Standby:
- ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;
- ALTER DATABASE RECOVER MANAGED STANDBY DATABASE FINISH;
- stop immediately; --> the snapshot can be done at this stage or need to get after 'RECOVER MANAGED STANDBY DATABASE CANCEL'
- Make a snapshot of the virtual machine
- startup nomount
- ALTER database base_de_donnees eve of Mount;
- ALTER DATABASE ACTIVATE PHYSICAL STANDBY DATABASE.
- ALTER DATABASE OPEN;
Test what finish
Standby:
- stop the database
- restore from snapshot
- Put the database in recovery mode
Elementary school:
- Allow destination of the Journal 2
What do you think?
Use the snapshot before...
https://docs.Oracle.com/CD/B28359_01/server.111/b28294/manage_ps.htm#BACIEJJI
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