Data Guard :: Create Control File With Standby Keyword On Primary Database
Jul 4, 2012
What is difference when you issue a create controlfile with "standby" keyword on the primary database
ALTER DATABASE CREATE STANDBY CONTROLFILE AS '/path/db_stby.ctl';
vs. creating a control using
ALTER DATABASE BACKUP CONTROLFILE to '/path/db_control.ctl';
what does ORACLE put into the standby control that is "extra"? ie. what is the difference between a standby control file and a normal control file?
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Dec 29, 2009
I try to recover standby db from a primary db backup set,but the standby control file is different.
to create primary controlfile by rman:
backup control file format '/home/cur_control';
to create standby controlfile:
backup control file for standby format '/home/std_control';
I want to know if there is method to convert cur_control to std_control.
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Feb 2, 2013
I was using physical standby but my primary database had had some HW issue.So I had activated standby database to handle production.During 3 months, standby database was our live database and our old primary was unavailable.Now HW issue on primary has been fixed.And I want to set again my old configuration : means set primary and standby db.
I'm trying this :
1) check the SCN on old primary
2) Rman incremantal backup from scn
3) on primary db : catalog
4) on primary db : recover database noredo
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Apr 30, 2012
I have a primary and standby DB using data guard 10.2.0.3.I want to upgrade oracle to 11G.I know that primary and standby should have same version even if data guard will not work again.I want to know what is the steps by steps action to properly upgrade both DB : primary and Standby.
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Jul 25, 2013
We have a primary and a standby (Physical Dataguard) site.
1. How do i check if the database is encrypted or not on primary as well as standby ?
2. If primary and standby are encrypted, does the data that gets replicated from primary to standby also in encrypted form ? If not, does it make sense to encrypt that ?
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Aug 30, 2013
If flashback is enable in physical standby database 1. If we failover at 11AM can I flash back NEW primary database to 6 AM ? 2. if I convert physically standby database to snapshot standby database at 11AM , Can I flashback snapshot standby database to 6 AM and do some works on it (DML operations) then converting the snapshot standby database into physical standby database ?
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Jan 30, 2013
I have installed oracle 11g standard edition one and created both primary and standby database. now i want to know how to switch(convert) primary database to standby database.
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Jan 16, 2013
i have configured physical standby in my local system, to check logshipping i created a table at primary db, wen i tried to check in standby, it says table does not exist..below are primary & standby alert entries..
Primary alert log
Fatal NI connect error 12514, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=172.16.0.98)(PORT=1522))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=STAND)(SERVER=dedicat ed)(CID=(PROGRAM=d:oracle11gappadministratorproduct11.1.0db_1inORACLE.EXE)(HOST=A960M)(USER=SYSTEM))(SERVER=dedicated)))
VERSION INFORMATION:
TNS for 64-bit Windows: Version 11.1.0.6.0 - Production
[code]....
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Dec 16, 2012
(Oracle 11gR1 OEL 5)Is there any possibility to convert snapshot database (standby) directly to Primary. Instead of manual switchover I want to do this
I have checked that snapshot creates a guaranteed restoration point which reverts back changes in Standby.
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Feb 20, 2013
I want to know if there is any reflection on the standby database states when it's primary is down or not reachable? I want to use this information from standby node to determine if I can programmatically execute (dgmgrl) failover operation or not? This is considering that the broker configuration has no fast-start failover and no observer enabled/configured.
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Nov 29, 2011
I have a requirement to change the instance parameter of the primary database and standby in the data guard. Any procedure to do the same. I have to do it directly on production and there is no test set up so I cannot experiment . The procedure I am thinking of is as below.
1. Stop the standby
2. backup the primary
3. Change the parameter and restart to make it effective
4. Start the primary
5. Go to stand by
6. Change the parameter and mount the database.
7. Check if both are in sync and apply logs if not.
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Oct 4, 2010
I new to data guard concept.
I am using oracle 10g with data guard configured , I have primary ( A ) and standby database ( B ) .But because of some unavoidable conditions the primary database ( A ) got shutdown and was not starting , We shifted the standby database ( B ) at new location and changed it to primary with following command ,
startup mount;
alter database recover managed standby database finish;
alter database commit to switchover to physical primary;
shutdown;
startup;
This new primary ( B ) was open for end users for 2 days during which old primary ( A ) was shutdown .
I took the backup of ( B ) and restored it on A AND shutdown the B . Now A is acting as Primary database. Server B is shutdown . I want to change server B to standby database with A running as Primary .Is it possible ?
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Mar 27, 2013
I am using Oracle RAC 11.2.0.3 as primary database, we are going to start using Oracle data guard. So I am designing my infrastructure and planing to use Oracle 11.2.0.3 Single instance as my physical stand by database.
My question is it feasible to have my standby database as single instance while the primary is RAC? is it feasible to build my Oracle single instance standby database from the RMAN backup of the RAC primary database? Is there any restrictions (or any points to be taken into consideration) since my primary database is RAC while the physical standby is Oracle single instance?
in the below link
[URL].......
it was mentioned that primary can be RAC or single and same for standby, but my question is it feasible to have primary as RAC while standby as single instance? or it should be like each others?
The primary database can be either a single-instance Oracle database or an Oracle Real Application Clusters (RAC) database. Similar to a primary database, a standby database can be either a single-instance Oracle database or an Oracle RAC database.
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Jan 16, 2013
I configured dataguard in my local system.
1) scn differs wrt primary in standby (i checked, 1day difference), how to make scn same?
2)i created a table in primary, its not refelecting in standby, (below i ve pasted alertlog entries)
ORA-27041: unable to open file
OSD-04002: unable to open file
O/S-Error: (OS 2) The system cannot find the file specified.
Errors in file d:oracle11gappadministratordiag
dbmsstandstand racestand_dbw0_6916.trc:
ORA-01157: cannot identify/lock data file 2 - see DBWR trace file
ORA-01110: data file 2: 'D:ORACLE11GAPPADMINISTRATORORADATASTANDSYSAUX01.DBF'
[code]....
3)wen i try to open standby database in read only mode gives below error..
ERROR at line 1:
ORA-16004: backup database requires recovery
ORA-01157: cannot identify/lock data file 1 - see DBWR trace file
ORA-01110: data file 1:
'D:ORACLE11GAPPADMINISTRATORORADATASTANDSYSTEM01.DBF'
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Nov 14, 2013
How can find the number of standby databases configured for primary database from os level
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Mar 10, 2010
I have two node rac running on SAN with ASM , i want to configure a single instance standby database for this.
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Apr 4, 2012
how to create the standby database on the same machine. os-window xp 2000(32 bit window) oracle 10g 10.2.0.1.0.
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Jul 25, 2011
I am trying to create the Standby database using RMAN.
I have first created an auxiliary instance followed by the password file for the instance and the registering it it listener.
Below are the parameters of the pfile of the standby database and followed by the command issued at the RMAN prompt.
PFILE parameters [STANDBY]
orcl.__db_cache_size=293601280
orcl.__java_pool_size=8388608
orcl.__large_pool_size=8388608
orcl.__oracle_base='F:appdsharma'#ORACLE_BASE set from environment
[code]....
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Oct 19, 2011
How to create a standby database without rman and with the rman..?
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Jan 25, 2013
create another standby database on a new server.
I'm running Oracle 11.2 EE on Solaris 10.
We already have one standby database, but now, I want to create another standby database on another server, which ultimately I will make primary and then replace and destroy our current primary/standby databases.
Also, just for the heck of it, I tried to look in our DB Console, and the "Add standby database" is grey'd out.
Is this because I am only using DB Console, and not Grid?But if that were the case, why would the option even be in DB Console, or perhaps is there a lmiitation to the number of standby databases you can manage with DB Console?
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Sep 16, 2009
I would need to create a physical standby database for DR without using data guard. I like to know in more details like
1. What would be required to switch over to standby database in case of failure of primary database? Is it going to be a manual process each time, or can be automated using scripts?
2. How the archive logs will be applied to standby database in timely manner to sync with primary database?
3. How the Primary database will be synch with Standby database once the issue resolved on primary database.
4. Where do I get a complete script to create physical standby database on Windows platform?
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Nov 4, 2010
why RMAN is unable to create physical standby database ?
RMAN> connect auxiliary sys/system@DGREPL
connected to auxiliary database: DGREPL (not mounted)
RMAN> connect target sys/system@REPL
connected to target database: REPL (DBID=2730563515)
RMAN> run{
allocate channel prmy1 type disk;
allocate channel prmy2 type disk;
allocate channel prmy3 type disk;
allocate channel prmy4 type disk;
[code]....
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Oct 25, 2012
I'd like to know the Standby hostname and database name (db_unique_name) from primary using SQL. Simply put, which table in primary datbase gives us the standby host and the database name. I am aware that TNSNAMES.ORA contains details, but we cannot use SQL for that. I am also aware of V$ARCHIVED_LOG's DEST_ID column. But, the DEST_ID will not show the host and the db names, neither does V$PARAMETER's LOG_ARCHIVE_DEST_n if SERVICE parameter is set to Connect Identifier.
If I further paraphrase my problem, how I'd relate a dest_id to a standby host and database using SQL.
SELECT <columns> FROM <v$some_view> WHERE dest_id IN (2, 3);
DEST_ID HOST_NAME DATABASE_NAME
--------------------------------------------------------
2 host2 standby_1
3 host3 standby_2DB version : 10g
OS : Solaris 10
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Jul 19, 2011
I did standby before and it works wighout any disturbations and even configuration seems to me not very complicated - but it was before. now i am trying to do standby configuration once again. there is database named DESK.
two physical serwers:
sczepl-db07 - primary
r00979 - standby
on each for this serwer there is listener listening on port 1521, and on each is tnsnames configured properly:
for sczepl-db07
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = sczepl-db07)(PORT = 1521))
[code]....
so why primary don't see standby db and claims that ther is no standby service? i proved that there is connection primary <--> standby.
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Sep 29, 2010
I have one primary database and one physical standby database on my data guard environment.
Now i want one more physical standby database in my data guard environment, meaning i want 2 physical standby. since this is a production environment, i need to take great care. However, downtime will be mandatory.
[u]init.ora for production:[/u]
pup2.__db_cache_size=6241124352
pup2.__java_pool_size=33554432
pup2.__large_pool_size=134217728
pup2.__oracle_base='/oracle/app/oracle'#ORACLE_BASE set from environment
pup2.__pga_aggregate_target=5771362304
[code]......
init.ora for my first primary standby
pup2.__db_cache_size=6509559808
pup2.__java_pool_size=33554432
pup2.__large_pool_size=67108864
pup2.__oracle_base='/oracle/app/oracle'#ORACLE_BASE set from environment
pup2.__pga_aggregate_target=5502926848
[code].......
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Mar 2, 2011
Primary:
2 NODE RAC Cluster/Linux x86-64/11.1.0.7.4 RDBMS
Standby server:
Brand new box, and I installed 11.1.0.6 (software only)
I have a brand new box set-up for a single-instance standby database, and I have installed 11.1.0.6 software only.
Do I need to patch 11.1.0.6 to 11.1.0.7 before I send a copy of the primary over to be set-up as a standby? If so, how do I patch 11.1.0.6 without having a local database in place as this server will only be used for a standby? Can patching the oracle_home only be done?
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May 9, 2010
i have a db's in maximum protection mode and i am trying to perform a switchover of physical standby database to primary role. but it failed., the steps followed is as follows. everything is fine with old primary site and the it is now in mounted state. When I went through the log file, I got the error message as "ORA-16072: a minimum of one standby database destination is required".the standby_archive_dest is as follows.
old primary database
SQL> alter system switch logfile;
SQL> alter system archive log current;
old standby database...Disconnect the managed recovery mode in Standby database.
SQL> recover managed standby database cancel;
Media recovery complete.
SQL> recover standby database;
AUTO
SQL> exit
[code]....
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Dec 21, 2011
how to create control file and how to load the data through command window in our database using sql * loader.i am having structure in my database and .csv file in my desktop.
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May 26, 2013
I have dataguard configuration operating in maximum availability mode with a local standby db (A - lgwr sync not using real time apply) and a remote standby db (B - lgwr async). I then simualted a crash of my primary database with batch jobs running. Since the stby db A is in lgwr sync option ,all the commited data in the current online redo log has been transmitted to stby A and is present in its stby redo log (Group 2).How do I apply this stby redo log to the remote stby db.
Tried the following methods.
1.ftp the stby redo log to the remote db and tried to regiter it, got an error that it is not completely archived.
2.issued the recover standby database command and supplied the stby redo log when it asked for the sequence in the stby redo, got an error saying there is corruption in a block(tried this option multiple times ended up with the same result.)
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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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