Active Dataguard Database
Jul 17, 2013
I've got a physical standby database and I'm now licensed for Active DataGuard. I would like to automate the ALTER DATABASE RECOVER MANAGED STANDBY DATABASE DISCONNECT FROM SESSION command to be executed right after the STARTUP command so that whenever the database is started by our DBSTART script, it activates READ ONLY W/APPLY immediately after start without manual intervention. This is probably simple, but I figured I'd ask before starting to pore through documentation.....!
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Apr 6, 2011
I try to auto startup my standby database after reebot machine. I used trigger " on startup" , srvctl but still it doesn't work..Database 11g , operating system RedHat 5 or HP-UX.
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Feb 8, 2013
In DR site. i have to clone the database from pshysical standby database and clone db will be normal db not standby. Is it possible to do rman duplicate from active dataguard? will it support the duplicate database from active database or i have to take the rman backup of standby database and duplicate from backup piece.
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Nov 23, 2010
1) The Primary Database is UP. The Physical Stand By Database is DOWN. The Current Archive Log Sequence is 99 in Primary.
We have to apply Archive Log from 51 to 99 to the Standby Database. But Unfortunately, there is no backup of those Archivelogs and the ArchiveLogs from 51 to 98 have got deleted at Primary end.
Now how will you apply these Archive Logs from Primary Database to Physical Standby Database?
Note : The Physical StandBy Database is DOWN.
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Oct 28, 2010
We have to configure Dataguard for our 24x7 critical banking 2 Node RAC database(10.2.0.4). Before proceeding with the configuration we have to make sure what steps we should follow to have minimum or no downtime.
1) Document covering DG setup in RAC environment.
2) We have to perform switchover as well so need its steps too. Either the normal switchover steps would be used or have to stop/start rac services as well.
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Dec 21, 2012
creating the standby database from Active database using RMAN and getting the below issue after i executed the duplicate command.
Version of Database:11g(11.2.0.1.0)
Operating System:Linux 5
Error:
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of Duplicate Db command at 12/21/2012 17:26:52
RMAN-03015: error occurred in stored script Memory Script
RMAN-04006: error from auxiliary database: ORA-12514: TNS:listener does not currently know of service requested in connect descriptor
[code]....
provide any work arounds to proceed further in creating the standby database.
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Aug 23, 2010
I have failed to duplicate target db for standby from active db using spfile with the following errors:
RMAN-03009: failure of backup command on prim1 channel at 08/11/2010 05:25:09
ORA-19558: error de-allocating device
ORA-19557: device error, device type: DISK, device name:
ORA-17627: ORA-01041: internal error. hostdef extension doesn't exist
[Code].....
The script has successfully created on standby db all controlfiles and also has copied 2 data files DATA01.DBF and DATA02.DBF into the correct location. Then the errors above kicked in and stopped the rman dup process.
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Oct 15, 2013
I am getting starting with rac environments. I need to configure a two nodes active/active with rac and I need to know if always using rac both nodes will be active or if I have to do that at some point when installing. I have reading some docs from oracle and others authors about rac and its configuration process but that is not understood for my yet.
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May 15, 2013
I am newbie to oracle database.
I am using oracle 9i version and in EMCA satndalone application . I have created database links.
The database links have been created, and three databases are local.
When i am pressing the test button in emca . It gives notification database link not active.
What should i do?
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Nov 2, 2011
I'm trying to set up Active Database Duplication between 2 Oracle 11g servers. Each server is identical, with the following characteristics:
- OS: Windows Server 2008
- Version: Ora11R2 (64 bit)
- DB Name: orcl
- Filesystem: asm (using grid infrastructure)
In addition, each server has been configured with the same sys passwords. The databases themselves were configured during installation (so the setups are about as basic as you can get.)
Now, I've done all sorts of research into how to do this. I've found plenty of good sources, but they seem to all have differences in the details.Here's what I've done so far:
- The TNSNames.ora file on each server has an entry for 'src' and 'dest' (sourca and destination) respectively
- I created an entry named 'SID_LIST_LISTENER' in the listner.ora file on the source machine. However, should the sid_name in this entry refer to the source or destination machine? Or does this listener entry belong on the destination machine instead?
- A lot of the examples require the setup of a new password file and spfile. Are these entries necessary if I'm using the same file structures/user names/etc. on both servers?
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Aug 5, 2011
I have issue with regards to duplication of an active (prod) database to a test database. This is my sql run by RMAN:
SPOOL MSGLOG to '/proddb/u01/app/dupe.log';
CONNECT target sys/oracle;
CONNECT auxiliary sys/oracle@MWTEST;
CONFIGURE DEFAULT DEVICE TYPE TO DISK;
RUN {
duplicate target database to MWTEST from active database;
}
CONFIGURE DEFAULT DEVICE TYPE TO SBT_TAPE;
It stops however in the middle and wouldn't continue. There is still huge space for the test database (3x the current size of prod database).
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Dec 6, 2012
I have a active data guard database which is copy of my production database. can i backup the active database using RMAN? The ADG is a read only and dont know, if RMAN can backup an read only 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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Nov 2, 2011
I'm trying to set up active database duplication between 2 Oracle 11g servers.
Both servers were set up with identical configurations (same directory structures, file systems, SIDs, and sys passwords.) Both oracle instances were created at the time of software installation.
Here is how things are configured:
- Version: Ora11gR2
- Oracle service name: orcl
- File system: ASM
- OS: Windows Server 2008
I've done some research and found several sources giving instructions on how to set up active database duplication (including a blog engry by rajabaskar on this site), but each site seems to have different details.
So, here's what I have so far:
- Set up entries in each TNSNames file... each has an entry 'src' and 'dst' (for source and destination)
- A new listener has been added on the source machine
- on the destination machine, run the 'oradm' to create a new SID. However, is this really necessary? Since the service names are already the same
- I'm also supposed to create a password file on the destination machine using orapwd. Again, is this necessary, if I'm using the same passwords on both machines?
Am I on the right track? Should I have created an actual database on the destination machine or should I have started with just the software installed?
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Apr 28, 2011
I'm checking the possibility to use Active Directory to log on the our Oracle databases. But only for dba's and developers, not application users. We use Oracle 10.2.0.4 (and soon 11g) As OS on the databaseserver we use AIX5L 5.3
Is it possible to implement Active Directory on databases running on AIX ? If it is possible, what must be done to get it to work, software ... etc ?
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Apr 16, 2012
I have a table in Oracle with a column userid and i have a userid column in Active Directory. based on this i want to query the Network ID and update in one of the Group in the Active Directory. how to get the results?
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Dec 9, 2010
findout and to fill up the excel which lists down the Database schemas and states whether they have in active / or not.
Active state may be determined whether it has been used for the last 3 months or so. The last updated time may be a good indicator of the same.
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Oct 12, 2012
How to access Active directory(Microsoft 2003) with oracle database 11g.
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Oct 1, 2012
Server:
Windows 2008 R2 x64
Oracle Database 11g Release 11.2.0.1.0 Standard Edition
I recently applied the Oracle® Database Server Version 11.2.0.1 Patch 16 I have several databases running on this box with the same application.Since then I've had lots of customers complaining about slow systems. The server has plenty of RAM availableI also have several other servers all on the same versions, same patch, running the same application with no issues.
Looking at v$session there are often lots of active sessions that have a sql_address of "00". I've never seen this before and I regularly look at v$session, as you can see for below these have been running for a while. The sessions do drop off but I am at a loss as to what is happening.
select username, last_call_et, sid, serial#, user#, status, sql_address, sql_hash_value
from v$session
where username is not null and status = 'ACTIVE'
order by last_call_et desc, sid
[code]...
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Sep 11, 2012
I like to duplicate the database DATABASEA to DATABASEB and need to be run in same server. I tried to bounce the listener & databaseb instance multiple times but no lucky.
Step 1 : The instance DATABASEB is in Nomount stage
Step 2 :
==> tnsping DATABASEB
TNS Ping Utility for Linux: Version 11.2.0.2.0 - Production on 11-SEP-2012 07:36:54
Copyright (c) 1997, 2010, Oracle. All rights reserved.
Used parameter files:
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = client )(PORT = 1521)) (CONNECT_DATA = ( SERVER = DEDICATED) (SERVICE_NAME = DATABASEB)(UR=A)))
OK (10 msec)
Step 3 :
==> rman target sys/*****@DATABASEA auxiliary sys/********@DATABASEB
Recovery Manager: Release 11.2.0.2.0 - Production on Tue Sep 11 07:37:50 2012
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
connected to target database: DATABASEA (DBID=1723462779)
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
[code]...
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Jul 25, 2012
We are using oracle as database in our application. For high availability we have a cluster of multiple nodes and the data is replicated using oracle streams. All the nodes in the cluster are active. We do not have any concept of stand-by.
Now we are planning to use oracle RMAN for backup and recovery. RMAN user's guide doesn't recommend any strategies for such deployments. It mainly focuses on primary/stand-by deployments.
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Jul 25, 2011
I have oracle 10g up and running on Solaris 10, from windows I would like to connect to sql plus through windows authentication, for that I have already made sure that remote_auth = true and have created user in oracle with OPS$. But still I cannot connect.
I have the same setup but with oracle on windows server, the os authentication from windows clients works just fine.
does oracle 10g on solaris 10 supports windows os authentication?
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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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Apr 27, 2012
i want to configure rac to rac dataguard 10g( primary is having 2 nodes and standby also 2 nodes).
oracle 10g/os linux5.
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Dec 3, 2012
This is my dataguard check script:
/home/oracle/bin/check
if [ $# -lt 1 ]; then
echo "usage: check <oracle_sid>"
echo
exit
fi
[Code]...
This is the output it gives on the primary:
INSTANCE_NUMBER INSTANCE_NAME
--------------- ----------------
HOST_NAME
----------------------------------------------------------------
VERSION STARTUP_T STATUS PARTHREAD# ARCHIVE LOG_SWITCH_WAIT
----------------- --------- ------------ --- ---------- ------- ---------------
LOGINS SHU DATABASE_STATUS INSTANCE_ROLE ACTIVE_ST BLO
---------- --- ----------------- ------------------ --------- ---
1 prod
xxxx
11.2.0.3.0 29-NOV-12 OPEN NO 1 STARTED
ALLOWED NO ACTIVE PRIMARY_INSTANCE NORMAL NO
[Code]....
SQL> Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options
This is the output it gives on the standby:
INSTANCE_NUMBER INSTANCE_NAME
--------------- ----------------
HOST_NAME
----------------------------------------------------------------
VERSION STARTUP_T STATUS PARTHREAD# ARCHIVE LOG_SWITCH_WAIT
----------------- --------- ------------ --- ---------- ------- ---------------
LOGINS SHU DATABASE_STATUS INSTANCE_ROLE ACTIVE_ST BLO
---------- --- ----------------- ------------------ --------- ---
1 prod_stby
xxxx
11.2.0.3.0 29-NOV-12 MOUNTED NO 1 STARTED
ALLOWED NO ACTIVE PRIMARY_INSTANCE NORMAL NO
[Code]....
SQL> Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options
When I run the following:
SQL> select archivelog_change#-1 from v$database;
On the primary I get:
ARCHIVELOG_CHANGE#-1
--------------------
4902447998
On the standby:
ARCHIVELOG_CHANGE#-1
--------------------
4902447999
Which makes sense to me as my understanding of this is that the log is written, send to the standby, applied, then applied on the primary, yes?
So my questions are:
Why is there a lower entry on the primary (234) marked as opening, when it's closing 235, and writing 236, what does LNS mean?
Why is the second archive on the standby saying "CONNECTED 0" and do RFS, & MPR0 mean?
My init files say this:
Primary:
log_archive_dest_1='LOCATION=/u01/archive/prod/arch'
log_archive_dest_2='SERVICE=prod_stby LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=prod_stby'
Standby:
log_archive_dest_1='LOCATION=/u01/archive/prod_stby/arch'
log_archive_dest_2='SERVICE=prod LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=prod'
Geek, scruff, economics wonk, a mind forever voyaging.
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Aug 29, 2012
I know the uses of ORAPWD utility and REMOTE_LOGIN_PASSWORDFILE initialization parameter.I wish to know that, what will be the primary purpose of using ORAPWD passwordfile in the following situations.
1. RMAN Cloning.
2. Dataguard Standby configuration.
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Sep 3, 2012
What is the purpose of Standby Redo Log Files in Data Guard configuration? When it is utilized by the database?
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Feb 21, 2013
We have a 10g environment with DataGuard running for reporting purposes. Our application team is getting ready to upgrade their application and it requires that several SQL Scripts be run to perform the primary database updates. A couple of them are over 1 MB in length. My concern is that these scripts will break DataGuard. I am not a DBA by any stretch, but I seem to remember there are certain limitations with DataGuard.
I have reached back to the team and asked them to have the Vendor confirm these scripts are validated for a DataGuard environment and I have also reached out to the System DBAs for review. I am wondering if there is an utiility available that can check the SQL to confirm if there are any DDL or DML statements that will not work in DataGuard. Likewise, we are going to run these scripts in a non-production DataGuard enabled environment first, but I want to have some level of confidence, that this will be a success.
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Dec 2, 2011
I have a dataguard setup, a primary and a standby.my instance is testdb.i have set all necessary dataguard parameters and everything seemed to work well initially with logs being moved from primary to secondary and being applied there.but all of a sudden i see that the primary pushes logs to the standby and at the standby end these logs are available but not applied.
when i try to execute the: alter database recover managed standby database cancel; it hangs for a long time and never returns to sql prompt.
i bascially want to stop and restart the MRP process to apply the logs but cannot cancel the managed recover mode.Is it advisable to kill the mrp process at os level using "kill -9 "?
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Oct 10, 2012
Refer a MOS Note for configuring data-guard on Exadata with DR server being and Exadata DBM too.
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