Oracle 9i Dataguard automatic failover

Hi Gurus,
I wanted to setup automatic failover from primary to physical standby database in oracle 9i . Could you please advice me what are necessary things required for this setup. Right now we are manually doing the activity.
thanks in advance
regards,
Shaan

Hi,
there is thread with the same question and I put there one link.
Re: DGMGRL switchover automatically without manual intervention
Regards,
Tom
http://oracledba.cz

Similar Messages

DataGuard automatic failover

Say an automatic failover has happened.
The former primary DB is down.
The former standby DB is now the primary DB and is up and running.
I assume the clients have to reconnect to the second DB.
Now, how can we make the automatic failover for the clients?
(At least that you do not have to manually change the clients' tnsnames.ora to the new DB.)

Take a look into the NET8 manual. The simple way is to define multiple addresses in the address list. That way you get a connect time failover: if the first instance isn't reachable the scond one will be used and so on.
DB =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.1)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.2)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = ORCL)
)

HACMP Clustering Script for SAP ECC 6.0 (SR1) - Automatic Failover-Oracle10

Hello,
I have installed the SAP ECC 6.0 (SR1) under AIX 5.3 / Oracle 10g with HACMP Clustering environment. Manual Failover is working fine. ASCS and Database instances are loaded in share drive with Virtual IP and Virtual name. Central Instance and Dialog Instance are loaded locally in Node A and Node B. I want to get HACMP Clustering script(automatic failover script) for Automation. Please help me if you have.
Thanks
Gautam Poddar

Here are HA stop & start scripts that you should be able adapt for your particular circumstances. Based on earlier versions of SAP / Oracle but assume should be a reasonable guide
Script to start SAP is start_sap_prd
#!/bin/ksh
Script:         /usr/local/bin/cluster/start_sap_prd
Comments:       HACMP Application START script for PRD
Show me obvious information in hacmp.out
banner "Starting"
banner "PRD SAP"
Set the oracle and sap owner.
ORASID="PRD"
SAPADM="prdadm"
ORAUSR="oraprd"
VIRTUALHOST="vhost"
DEVHOST="vhostdev"
Get the volume groups for this resource group
RG=$( /usr/es/sbin/cluster/utilities/cllsgrp | grep -i $ )
VG_LIST=$( /usr/es/sbin/cluster/utilities/cllsres -g $ | \
        grep "VOLUME_GROUP=" | \
        awk -F\" '{ print $2 }' )
Check the transport directory is mounted.
if mount | grep -w "/usr/sap/trans"
then
        print "Transport directory is already mounted."
else
        cd /tmp
        print "Attempting a background mount of the transport directory."
        nohup mount -o intr,bg,soft :/usr/sap/trans1 /usr/sap/trans &
fi
#Start SAP and Oracle
#Start listener
su - $ -c /rprd/oracle/PRD/920_64/bin/lsnrctl start
rc=$?
if [ $? != 0 ]
then
        echo "ERROR: Listener failed to start\n"
fi
#Start Database
su - $ -c "/rprd/oracle/PRD/bin/start_database_PRD.sh"
sleep 20
Standard sapstart script
su - $ -c startsap $
Script:       /usr/local/bin/cluster/stop_sap_prd
Dated:        01/11/06
Application: Oracle/SAP
Comments:     HACMP Application STOP script for SAP / Oracle PRD
Show me obvious information in hacmp.out
Set the oracle and sap owner.
rc=$?
if [ $? != 0 ]
then
        echo "ERROR: Failed to start SAP\n"
fi
exit 0
Script to stop SAP is stop_sap_prd
#!/bin/ksh
set -x
banner "stopping"
banner "PRD SAP"
ORASID="PRD"
SAPADM="prdadm"
ORAUSR="oraprd"
VIRTUALHOST="vhost"
#Stop SAP/Oracle
su - $ -c stopsap $
rc=$?
if [ $? != 0 ]
then
        echo "ERROR: Failed to stop SAP and Oracle\n"
        break
fi
Stop SAP collector and Oracle listener.
su - $ -c /usr/sap/PRD/SYS/exe/run/saposcol -k
rc=$?
if [ $? != 0 ]
then
        echo "ERROR: Failed to stop SAPOSCOL \n"
fi
su - $ -c /rprd/oracle/PRD/920_64/bin/lsnrctl stop
rc=$?
if [ $? != 0 ]
then
        echo "ERROR: Listener failed to stop\n"
fi
if mount | grep -w "/usr/sap/trans"
then
        print "Transport directory is mounted."
        /usr/es/sbin/cluster/events/utils/cl_nfskill -k -u /usr/sap/trans
        sleep 1
        /usr/es/sbin/cluster/events/utils/cl_nfskill -k -u /usr/sap/trans
        sleep 1
        umount -f /usr/sap/trans &
else
        print "Transport directory is not mounted."
fi
exit 0

Oracle 9i Dataguard

I am working on Oracle 9i Dataguard.
When failover database the fixed the primary server and switchover the database .I will get error and oracle can not switchover

You should provide some inputs on which we can process.
You have not mentioned the OS version,database version,error code your are getting,
what configuration you have made for log shipping..
You should ensure that all these things should be provided

Automatic failover

Dear all,
10.2.0.3 on windows 2003.
One of our clients wants to have a DR site of their primary rac database and insist to have automatic failover to DR site ?.
Please suggest me what are all the options available to implement DR site with automatic failover enabled ?
Kai

Dear KaiS,
If you are talking about a "Disaster Recovery" than you need to configure Oracle Data Guard.
If you are talking about a "replication of the primary database" than you can use Oracle Streams.
Both technologies are well structed and documented.
The Data Guard configuration allows you to automatically failover or switchover to the standby site. This configuration is called the "observer". You can setup the observer to another location rather than the primary and standby database and it constantly monitors both sites in terms of availability.
Please refer to the Oracle's Online documentation --> http://tahiti.oracle.com/
Regards.
Ogan

Automatic failover doesn't failback to the first server if the second server is lost.

Hi Everybody,
We use the database mirroring a lot in our product solutions and we have recently experienced a strange behaviour in our failover tests with SQL2008R2.
We have 2 servers running Windows 2008 R2 standard and SQL 2008 R2 standard SP2. (let's call them DB1 and DB2)
We also have a Witness workstation running SQL 2008 Express on a Windows 7
A database from DB1 is mirrored to DB2 in "safety full" mode, with witness. At this stage, the database is principal on DB1 and mirror on DB2
To test the automatic failover, we first restart the DB1 server which has the database in principal mode
After a few seconds, the database on DB2 becomes principal, which is normal , that's exactly what we want.
After a few minutes, DB1 comes back online and its database takes the mirror role (still OK). At this stage then, the database is principal on DB2 and mirror on DB1
when the monitoring application shows that the mirror is synchronized and that both servers are connected to the witness, we restart DB2 to trigger an automatic failover to DB1.
What we see is that DB1 never takes the principal role and the database stays in mirror.
In the DB1 Errorlog, I only see these 2 lines when DB2 disappears, no other message related to the mirroring session.
2014-01-22 08:57:26.91 spid43s Starting up database 'Test123'.
2014-01-22 08:57:26.95 spid43s Bypassing recovery for database 'Test123' because it is marked as a mirror database, which cannot be recovered. This is an informational message only. No user action is required.
When DB2 comes back online, the database on DB2 keeps its principal status and the database on DB1 stays mirror.
And what is really really strange is that, if I restart DB2 once again, directly after that, DB1 failover normally and the database on DB1 takes the principal role after a few seconds. without any configuration changes between the 2 restarts.
DB1 errorlog shows then :
2014-01-22 09:00:37.53 spid29s Error: 1474, Severity: 16, State: 1.
2014-01-22 09:00:37.53 spid29s Database mirroring connection error 4 'An error occurred while receiving data: '64(The specified network name is no longer available.)'.' for 'TCP://DB2:5022'.
2014-01-22 09:00:37.53 spid18s Database mirroring is inactive for database 'Test123'. This is an informational message only. No user action is required.
2014-01-22 09:00:42.37 spid32s The mirrored database "Test123" is changing roles from "MIRROR" to "PRINCIPAL" due to Auto Failover.
2014-01-22 09:00:42.39 spid32s Recovery is writing a checkpoint in database 'Test123' (7). This is an informational message only. No user action is required.
2014-01-22 09:00:42.39 spid32s Recovery completed for database Test123 (database ID 7) in 78 second(s) (analysis 0 ms, redo 0 ms, undo 7 ms.) This is an informational message only. No user action is required.
So, if I summarize,
- a first failover from DB1 to DB2 always work
- then, a restart of DB2 never failover to DB1
- a second restart of DB2 always failover to DB1
This is pretty much systematic on one our server couple.
Any explanation for this or any idea where I can search to find the reason of this strange behavior ?
Thanks a lot for your help
Seb

Thank you Tom
But I have already checked that and reported the Errorlog abstracts in my original post.
When DB01 disapears for the first time, nothing in the DB01 ERRORLOG (it is restarting :-) )
AND no particular error message in the DB02 ERRORLOG (nothing related to the fact that DB01 is not reachable anymore !!! )
Only these two lines
2014-01-22 08:57:26.91 spid43s Starting
up database 'Test123'.
2014-01-22 08:57:26.95 spid43s Bypassing recovery
for database 'Test123' because it is marked as a mirror database, which cannot be recovered. This is an informational message only. No user action is required.
So my main question remains Why DB02 doesn't detect that DB01 disapears (and the first time only) and why the failover mechanism doesn't trigger the failover ?
Thank you
Seb

New Note 790189.1 - Oracle Clusterware and Application Failover Management

Hi all,
please, note the newly created Metalink Note 790189.1 - Oracle Clusterware and Application Failover Management if you want to use Oracle Clusterware as a general purpose cluster solution. The note intends to clarify and to explain the current situation in regards to the supportability of applications managed by Oracle Clusterware.
In environments not including Oracle RAC, Oracle Clusterware still provides the level of high availability that is commonly known to be achievable for applications and databases managed in (failover) cluster environments. These environments can include Oracle Single Instance Databases, Oracle Application Servers, Oracle Enterprise Manager components, third party databases, or any other kind of application. (For more information on Oracle Clusterware 11g in general, please, refer to [Oracle Clusterware homepage|http://otn.oracle.com/clusterware].)
Metalink Note 790189.1 - Oracle Clusterware and Application Failover Management is tightly integrated with the information on application failover management available on the [Oracle Clusterware homepage|http://otn.oracle.com/clusterware] and discusses typical questions like
* Terminology
* Script supportability and preconfigured agents
* How to prove that action scripts work outside of Oracle Clusterware
* Supportability of the Oracle Database Single Instance example scripts
* How do I know whether a certain script is supported as a preconfigured agent?
Metalink Note 790189.1, however, does not change the level of support that has been introduced for these kind of configurations as of Oracle Database 10g Release 2: "Generally, Oracle does not support action scripts in the strict terms of supporting individual code fragments. Oracle fully supports the integration of individual action scripts proven to run outside of Oracle Clusterware into the Oracle Clusterware management stack. Supported operations therefore typically involve crs_* commands such as crs_profile, crs_register, crs_setperm, crs_getperm, crs_start, crs_stop, and crs_relocate invoked on custom resources. If actions scripts are used as part of a preconfigured agent, Oracle or the application provider who provides the agent will support the integration of this agent, while only the application provider will provide support for the individual action scripts."
Just for your information. Thanks,
Markus

not meant to be a question - rather an announcement.

Oracle Active Dataguard 11g - Passwords

Hi all
Environment description: Production database, 11.2.0.3 version, standalone running on Solaris and an Oracle Active Dataguard database in read only mode, same version and operating system.
Question: The users passwords and sys/system passwrod (orapw ) could be different in the ADG environment? I mean, could the orapwd file and user password be changed in the Dataguard database ?
Thanks a lot.

user1687821 wrote:
Hi All,
Please suggest a good step by step guide to implement Oracle Active Dataguard on Oracle 11g, OS : RHEL 5.4
Have searched a couple of documents, but ending up with physical or logical dataguard setup guides...
Please suggest end to end steps guide for Active Dataguard Implementation
DB : Oracle 11g Release 2
OS : RHEL 5.4
ThanksHi,
Active dataguard is option after configuring dataguard.
You can put standby database in Open(read only) mode also you can enable Recover(MRP) while open so this can be used for reporting purpose too.
Please refer below links for configuring them.
http://www.oracle-class.com/wp-content/uploads/2011/01/dataguard/11gR2%20Physical%20Data%20Guard%20Setup%20%20project,%20with%20Active%20Data%20Guard%20option.pdf
http://www.databasejournal.com/features/oracle/article.php/3834931/Using-Oracle-11gs-Active-Data-Guard-and-Snapshot-Standby-Features.htm
http://www.oracle-base.com/articles/11g/DataGuardSetup_11gR2.php
http://www.oracle.com/technology/deploy/availability/pdf/maa_wp_11gr1_activedataguard.pdf
HTH.

Oracle 11g R1 Automatic Installation shell scripts

Hy Guys,
Please can someone help me with: Oracle 11g R1 Automatic Installation shell scripts. A guide, how to or a link will be wellcome
Kind Regards
Easyman
Edited by: Easyman on Feb 2, 2010 3:58 AM

Hi Easyman,
sure, just have a look in $INSTALL_CONF directory. Files starting with swInst* are referencing a response file from $INSTALL_CONF/response directory. Either use a sample configuration file or add your own response file to install Oracle.
Cheers,
David
OCP 9i / 10g / 11g
http://www.oratoolkit.ch/knowledge/howto/installation/otn.php
P.S.: If you have more questions about oraToolKit please contact me at: http://www.oratoolkit.ch/faq.php

SQL 2005 mirroring : Abrupt Automatic failover

hi All,
We have a SQL 2005 SP4 mirroring setup of 15 DBs with Principal(P), Mirror(M) & Witness (W).
We have now seen abrupt DB failovers for some of the databases (yest it was 4 out of 15) from P to M.
Errors were seen on Witness server as follows for all Dbs that failed over:
Date 07/01/2015 11:07:48 PM
Log SQL Server (Current - 08/01/2015 12:00:00 AM)
Source spid19s
Message
The mirroring connection to "TCP://<server.domain.com>:5022" has timed out for database "<DBName>" after 10 seconds without a response. Check the service and network connections.
Actions taken:
1. Network and Firewall team reverted that no error detected and no network traffic between the witness server and db server during the db auto failover period.
2. On the system side, we have verified that no hardware error found on either VM or SAN storage, and no Symantec SQL backup jobs running nor anti virus scanning during the db auto failover period too.
3. We did see some high amount of IO activity on P server around failover time. Some IO errors similar to below were seen, however point to note is these errors were not only for the DBs that failed over, but for others including TEMPDB:
Date 07/01/2015 11:07:38 PM
Log SQL Server (Current - 08/01/2015 4:06:00 AM)
Source spid2s
Message
SQL Server has encountered 1 occurrence(s) of I/O requests taking longer than 15 seconds to complete on file [R:\SQLDATA\MSSQL.1\MSSQL\Data\<DBName>.mdf] in database [DBName] (5). The OS file handle is 0x000000000000095C. The offset of the
latest long I/O is: 0x0000054ff22000
Questions:
1. I assumed that the Witness keeps polling P & M on DB mirroring endpoints (in our case 5022) to check that the DBs are online, but Network team says there is no activity on that port, is my understanding correct?
2. Is there any other reason for DB failover ?
Link referred:
http://dba.stackexchange.com/questions/22402/what-can-cause-a-mirroring-session-to-timeout-then-failover-sql-server-2005
http://msdn.microsoft.com/en-us/library/ms179344(v=sql.90).aspx
Any help is highly appreciated!!!
Regards,
Mandar

This is common with Mirroring server it is not as resilient to changes as log shipping. Are you aware about
below fact although not directly related to your question
If you plan to use high-safety mode with automatic failover, the normal load on each failover partner should be less than 50 percent of the CPU. If your work load overloads the CPU, a failover partner might be unable to ping the other server instances in
the mirroring session. This causes a unnecessary failover. If you cannot keep the CPU usage under 50 percent, we recommend that you use either high-safety mode without automatic failover or high-performance mode.
Now to your problem
The mirroring connection to "TCP://<server.domain.com>:5022" has timed out for database "<DBName>" after 10 seconds without a response. Check the service and network connections.
I would say there was network dip for more than 10 seconds and since default failover time is 10 seconds and for few databases witness thought principal cannot be reached it initiated failover.
Network team is incorrect to say there was no dip (its common with NOC team not to take responsibility)
This Support Article is worth reading specially the network part
Please mark this reply as answer if it solved your issue or vote as helpful if it helped so that other forum members can benefit from it
My Technet Wiki Article
MVP

SQL 2012 Database Availability Group - Force Automatic Failover

Hi All,
I'd appreciate some help in understanding the following scenario in my test environment.
I have created a DAG with 2 replica servers (both of which are HyperV VM's running W2012 Std).
From a client PC in my test lab, I can connect to the virtual listener of my DAG and confirm via the "select @@servername" command that I am connecting to the primary replica server.
Using the Failover Wizard, I can easily move to primary instance between my 2 nodes and the command above confirms that the primary replica server has changed. So far so good.
What I wanted to test, was what would happen to my DAG in the event of a complete loss of power to the server that was acting as the primary replica server. At first, I thought I would stop the SQL Server service on the primary server, but this did not result
in my DAG failing over to the secondary replica. I have found out that the only way I can do this is by effectively shutting down the primary server in a controlled manner.
Is there any reason why either stopping the SQL Server service on the primary replica, or indeed forcing a power off of the primary replica does not result in the DAG failing over to the secondary replica?
Thanks,
Bob

Hi,
I would verify if Database Availability Group means AlwaysOn Availability Group.
How did you set the FailureConditionLevel?
Whether the diagnostic data and health information returned by sp_server_diagnostics warrants an automatic failover depends on the failure-condition level of the availability group. The failure-condition level specifies what failure conditions
trigger an automatic failover. There are five failure-condition levels, which range from the least restrictive (level one) to the most restrictive (level five). For details about failure-conditions level, see:
http://msdn.microsoft.com/en-us/library/hh710061.aspx#FClevel
There are two useful articles may be helpful:
SQL 2012 AlwaysOn Availability groups Automatic Failover doesn’t occur or does it – A look at the logs
http://blogs.msdn.com/b/sql_pfe_blog/archive/2013/04/08/sql-2012-alwayson-availability-groups-automatic-failover-doesn-t-occur-or-does-it-a-look-at-the-logs.aspx
SQL Server 2012 AlwaysOn – Part 7 – Details behind an AlwaysOn Availability Group
http://blogs.msdn.com/b/saponsqlserver/archive/2012/04/24/sql-server-2012-alwayson-part-7-details-behind-an-alwayson-availability-group.aspx
Thanks.
Tracy Cai
TechNet Community Support
Hi,
Thanks for the reply.
It's an AlwaysOn Availability Group.
In my test lab, I have changed the quorum configuration to a file share witness and that has allowed an automatic failover when I turn the primary replica server off (rather than power it off).
I'll take a look at the links you provided.
Regards,
Bob

Unplanned automatic failover using Hyper-v Replica , why don't the VMs start up automatically on the replica server?

Hi,
We have cluster with two hosts (Host01 , host02) replicated to another server (Replica01)
in order to test automatic failover to the replica server (Replica01) We unplugged the power cables from Host01 and Host 02
now the VMs on the replica server is still off , why don't the VMs start up automatically on the replica server?
Ramy Shaker

overall there is no automatic failover in Hyper-V
Of course there is. It's enabled by Failover Clustering. This is a totally separate technology from Hyper-V Replica.
There is no automatic start up in Hyper-V Replica because it is not designed to detect a split-brain condition where the same virtual machine is running in multiple locations simultaneously. The replica site has no way to know why it can't reach the primary
system anymore. It might just be because someone unplugged a network cable. If the primary's virtual machines are still running and the replica decides to spin up its copies, you will have many troubles.
Eric Siron Altaro Hyper-V Blog
I am an independent blog contributor, not an Altaro employee. I am solely responsible for the content of my posts.
"Every relationship you have is in worse shape than you think."

HACMP Clustering Script for SAP ECC 6.0 (SR1) - Automatic Failover

Hello,
I have installed the SAP ECC 6.0 (SR1) under AIX 5.3 / DB2 V8 FP12 with HACMP Clustering environment. Manual Failover is working fine. Central System has been installed in share drive with Virtual IP and Virtual name inNode A. Dialog Instance is loaded locally in Node B. I want to get HACMP Clustering script(automatic failover script) for Automation. Please help me if you have. It is single package clustering. If Node A fails, Node B will take care ( Central System and Dialog instance will run in Node B)
Thanks
Gautam Poddar

this post is duplicated at Upgrade to ERP 2005/ECC 6.0 from R/3 4.72/Basis 640 on Z/OS 1.4 DB2 8.1

Close Oracle forms server automatically

Hi all,
I am using Oracle forms 6i in web.
WHen i exit the form the Oracle form server is still sitting there.How to close the Oracle Forms Server automatically when i exit the form.
I mean can we have any statement in the form to close th e oracle forms server.
Thanks for your help.
Thanks

Hi I have a link like below
I used the following code in post form trigger of my form
web.show_document('javascript:history.back();','_self');
When i press the link the Oracle Web server is opening and oracle run form is opening login information
When i pressed the logoff of my form.
It is still showing Oracle Web Server screen.
I need to go back to my link screen,where i am calling this form.
Thanks for you rhelp.

Oracle 10gR2 Dataguard quick question

Hi -
Just a quick question about Oracle 10gR2 Dataguard. I'm in the process of creating dataguard standby, which is running for few hours and could take few more hours because of the size and the standby's network latency, and i'm using OMS to create the DG. I'm in a situation now to create new tablespace(A) and also one more datafile to the existing tablespace(B).
Question is: How would this new tablespace and the new datafile in the existing tablespace affect the DG standby which is about to finish in couple hours? Will the DG pickup the new changes from the primary? Or, will it be done with error from the mismatch of the number of files? The issue is that i can't wait for the standby creation to be done as the additional tablespace and datafile requirement is production critical, and should be added right away.
note: standby_file_management is set to auto.
Thanks for your response.
regards.

Your post is a bit vague, as OMS is an acronym for Oracle Management Server, which is a service only.
If you would have stated you are using Database Control, or RMAN duplicate database, the picture would have been much clearer.
Database Control uses rman duplicate database.
Recovery is the mandatory implicit last step of this procedure to pick up all changes since you started the duplicate.
One word of warning: Network latency is one thing to avoid like hell in a standby configuration.
It might even slow down your production database.
Sybrand Bakker
Senior Oracle DBA

Oracle 9i Dataguard automatic failover

Similar Messages

Maybe you are looking for