RAC & Failsafe :: Manual Failover To Standby Database Without RAC And DG?
May 13, 2013
if it is possible to create a failover setup without RAC and DG...For example:
I have 11.2.0.2 database (with EBS 12.1.3) on dbnode1...I would like to create another node to failover my primary datbas in case of any failure.
Steps i will follow:
1: creat dbnode2
2: install same os as dbnode1
3: install same oracle as dbnode1
4: share dbnode2
database between dbnode1
and dbnode2
Now, if hardware fails on dbnode1, can i manually failover and start my database on dbnode2?
I know we can do with RAC and DG,BUT without RAC and DG If not possible..
In my production -- we have 3 nodes Primary RAC with 2 Nodes Physical secondary Standby RAC. Due to some reason we will have to failover means 3 nodes Primary Standby RAC to 2 Nodes secondary physical Standby RAC. share Steps for Failover ( not switchover) from 3 Nodes Primary RAC to 2 Nodes Physical Standby RAC. I know this is generic and can be find from google but issue is how can failover from 3 nodes primary standby rac to 2 nodes secondary physical standby rac.
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 ?
I am running some small tests here in my test env, using dataguard. I have configured the Primary and Standby with Maximum Availability... they're running just fine. Now i want to execute a failover test (i have already ran a Switchover test with the Broker successfully).
My question is very simple, at my point of view: What are the required steps to execute a successful manual failover? For example, i have my env as follows:
- Primary: prim1 - Standby: stdb1
Suppose that the primary database crashes in an unrecoverable way... is this case a manual failover would be necessary.
To do so, i would have to execute the following command, in my Standby database:
-- stdb1 is the standby database... DGMGRL> failover to stdb1
The above command is correct? Are there any required configurations after the failover? I read the Oracle Docs, and it says
We have a 2 node RAC installation on IBM AIX 5.3 with Oracle Standard Edition. We need to create a manual standby database (becoz Standard Edition does not allow Dataguard confign). Can we do this on a different platform (eg: Linux/Windows). This is to make use of existing servers for the standby environment.
OS: Solaris DB: Oracle 11.2.0.1 EE Not Using ASM or RAC
I have a Production database that is in archivelog mode and a Standby DR server. Both servers (Prod, Standby) have exact same structure and db name/version.
We manually scp archive logs and recover them to a manual standby database via SQL Scripts "cron". (I.E. set autorecovery on; recover standby database;)
We recently got out of sync with our log files and have not been applying them to the standby. As part of Prod Maintenance, these log files were deleted and are not available anymore.
I've tried several ways to "rebuild" our standby database. I have tried to Shutdown prod, backup all the db files and scp them to standby, re-create standby controlfile and startup mount and recover standby. Every time I try to apply a new archive log via recover standby, these are the errors:
ORA-00279: change 211077622 generated at 1/27/2012 12:18:42 needed for thread 1 ORA-00289: suggestion : /oradump/arch/PROD/PROD_arch_1_69486_736618850.arc ORA-00280: change 211077622 for thread 1 is in sequence #69486 ORA-00308: cannot open archived log '/oradump/arch/PROD/PROD_arch_1_69486_736618850.arc' ORA-27037: unable to obtain file status SVR4 Error: 2: No such file or directory
Additional information: 3
ORA-10879: error signaled in parallel recovery slave ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below ORA-01152: file 1 was not restored from a sufficiently old backup ORA-01110: data file 1: '/oradevices/PROD/oraPRODsystem1.dbf'
When I check v$log_history, the new logs have not been applied. I've also tried the "Restore from incremental backup via SCN" method with same results. Is there a way to re-create the standby clean and ensure that the log chain that is currently broken gets fixed or reset? I would eventually like to get DataGuard in here, but that's not the case at the moment.
we had our Oracle RAC database at primary and Standby database as DR. It was running in 10g (10.2.0.1.0) in HP UX 11i platform.
We need to upgrade both the setups from 10.2.0.1.0 to 10.2.0.4.0 . I will go through the upgrade guide, i like to know is there any special case for upgrading when we do for both primary and standby database.
And whether i need to create a new Oracle home with 10.2.0.4.0 software or i can upgrade in the same oracle home which already exists.
working on setting up connection between a Windows 2008 server and a pair of Oracle 11g DBs in a RAC Cluster. One Database (let's say DatabaseA) is in one data center, and the other (DatabaseB) is an a secondary, backup database. The RAC Cluster is all set up, working fine, etc. However, I Need to set up the machine.config file on my Windows Server, to go only connect to DatabaseA, unless it fails, in which case, we want it to connect to DatabaseB. Think we could do this if the host app server was Linux/Unix, but it is windows, and I just don't have the background as to the parameters to set up in the machine.config file. They are similar, but different, and we want a very specific behavior (use DatabaseA, unless fails, then DatabaseB). Application is .NET 4.0 app.
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.)
The DB was created but when i log in again, it is looking for the pfile in the another DB's location rather than from "%ORACLE_HOME%DATABASE". Where i missed out to create new oracle_home folder?
i am creating database manually in oracle 9i os version ibm-aix5.3 it showing following error
CREATE DATABASE "varathu" * ERROR at line 1: ORA-01501: CREATE DATABASE failed ORA-00200: controlfile could not be created ORA-00202: controlfile: '/backup/varathu/control01.ctl' ORA-27040: skgfrcre: create error, unable to create file IBM AIX RISC System/6000 Error: 13: Permission denied
i have Oracle 10g data guard set up on windows environment.....i need to know the what are the right steps to perform failover in case the primary database gets fail.
I got a primary database with a logical standby database running Oracle 11g. I got two client applications, one is the production site pointing to the primary one, another one is just a backup site pointing to the logical one.Things will only be written into the primary database every mid night and client applications can only query the database but not add, update nor delete.And now, I want to apply the latest patch on both of my databases. I am also the DNS administrator, I can make the name server pointing to the backup site instead of the production one.I want to firstly apply the patch on the logical one, and then the physical one.
I found some reference which explains how to apply patches by adopting "Rolling Upgrade Method". however, I want to avoid doing any "switch over" mentioned in the reference because I can make use of name server. Can I just apply patches as the following way?
1)Stop SQL apply 2)Apply patches on logical standby database 3)let the name server point to the backup site 4)Apply patches on the primary database 5)Start SQL apply 6)Let the name server point back to the production site
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.
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.
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.
I want to restart a 10g database on ASM ? startp and shutdown sequence?I would like to shutdown everything including database, ASM and cluster and startup again
I read at various places but not sure of the sequence For database DB with database instance DB01 and DB02 having ASM instances ASM01 and ASM02 on node1 and node2, I understand following would be the sequence
1) Login as root on node1 cd $CRS_HOME/bin ./crsctl start crs
2) Login as root on node2 cd $CRS_HOME/bin ./crsctl start crs
3) login as oracle on node1 $ORACLE_HOME/bin/srvctl start nodeapps -n node1
4) login as oracle on node2 $ORACLE_HOME/bin/srvctl start nodeapps -n node2
5) login as oracle on node1 start ASM instance on node1 $ORACLE_HOME/bin/srvctl start asm01 -n node1
6) login as oracle on node2 start ASM instance on node2 $ORACLE_HOME/bin/srvctl start asm02 -n node2
7) Start oracle database (from any node) $ORACLE_HOME/bin/srvctl start database -d DB
A. confirm if the above sequence is correct? B. This sequence if corrrect, is same for 10g and 11g? C. Is shutdown sequence exact reverse of the above?
The problem i mentioned in my last posting "CRS installation/PRIF-10: failed to initialize the cluster registry" was due to the fact i was using Redhat Linux 9 that seems to have some missing packages. I installed White Box RH 3 and everything worked fine.
if it's possible to connect to a 10g RAC database using the jdbc java thin client. the java thin client requires an ip, and database sid. I am running a two node cluster and i have two ip's and a service name that uses TAF option.
here we have san server and rac database two node database.i want to know how can i create directory on rac database. i know how to create directory on single database but i do not know how can i create directory on rac database.
we encounter a problem with a 2-nodes RAC with 11gR2 SE : Database RAC is correctly running but we encounter problems using RAC TNS entry, obtaining the message ORA-01033.We can access to the DB using a TNS entry using each one of IP addresses but when we use the SCAN address, it fails. 2 weeks ago RAC2 node could connect perfectly with the SCAN address but RAC1 (used as a client) obtained error message almost 30% of tries.
We made a reboot of RAC1 node and now SCAN address works correctly from RAC1 and RAC2 (used as a client) fails systematically with SCAN address but works perfectly with direct access to the database.On both nodes, SCAN address is perfectly resolved by DNS server, cluster seems correct, listeners seems correct...We have opened an SR on Metalink 4 weeks ago but we don't progress.
