Need a Data Guard forum

Under Database,
can you create a DATA GUARD forum.
thanks

I do drop my questions, comments in Database General, but I feel like they (the questions, comments) get "lost" so fast in that forum.
I go to : http://www.orafaq.com/forum/f/12/0/
a lot, but I feel if the forum was here, well..it too would get a fair amount of eyes looking at the questions / comments. Of course, I am NOT trying to take anything away from the ORAFAQ site...it is GREAT as well..

Similar Messages

Data guard forum

Hello everybody !
Yesterday I noticed that my standby server was behind the prduction one.
In the error log I noticed:
ORA-00600: internal error code, arguments: [kcbr_apply_change_11], [], [], [], [], [], [], [], [], [], [], []
then
MRP0: Background Media Recovery terminated with error 448
Recovered data files to a consistent state at change 286116915
This error happens in sequence: Recovery of Online Redo Log: Thread 1 Group 4 Seq 8830 Reading mem 0
I found this archive log in standby and it is same size as in the production one.
Anybody can help me please?

930648 wrote:
Hello everybody !
Yesterday I noticed that my standby server was behind the prduction one.
In the error log I noticed:
ORA-00600: internal error code, arguments: [kcbr_apply_change_11], [], [], [], [], [], [], [], [], [], [], []
then
MRP0: Background Media Recovery terminated with error 448
Recovered data files to a consistent state at change 286116915
This error happens in sequence: Recovery of Online Redo Log: Thread 1 Group 4 Seq 8830 Reading mem 0
I found this archive log in standby and it is same size as in the production one.
Anybody can help me please?What is the version?
You have to use Error lookup tool to investigate Internal errors. *ORA-600/ORA-7445/ORA-700 Error Look-up Tool [ID 153788.1]*
Version of database is very important, you can take a look this note +Managed Recovery fails with ORA-00600:[kcbr_apply_change_11] [ID 1318733.1]+
Can you perform clean shutdown and start with recovery your standby database Again, If any errors from alert log file during startup, Please post here.
>
930648
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Handle:      930648
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Registered:      Apr 27, 2012
Total Posts:      39
Total Questions:      14 (11 unresolved)
>
Close your old threads and keep the forum clean.
Thank you
Edited by: CKPT on Sep 19, 2012 12:11 PM

Need suggestion on Active data guard or Logical Stand by

Hi All,
Need a suggestion of on below scenario.
We have a production database ( oracle version 11g R2 ) and planning to have a Logical standby or physical standy (Active data guard). Our usage of the standby database is below.
1) Planning to run online reports (100+) 24x7. So might create additional indexes,materialized views etc.
2) daily data feed ( around 300+ data files ) to data warehouse. daily night, jobs will be scheduled to extract data and send to warehouse. Might need additional tables for jobs usage.
Please suggest which one is good.
Regards,
vara.

Hello,
In active dataguad Whig is feature from 11gRx ,
If you choose active dataguard, you have couple of good options, one is you can make a high availability of your production database, which can act as image copy of production, as you are asking in 11g you have more advantage where you can open in read only mode and at the sometime MRP will be active, so you can redirect users to connect standby to perform select operations for reporting purpose. So that you can control much load on production ,
Even uou can perform switchover in case of role change, perform failover if your primary is completely lost. Also you can convert to physical to logical standby databases & you can configure FSFO
You have plenty of options with active dataguard.
Refer http://www.orafaq.com/node/957
consider closing the thread if answered and keep the forum clean.
>
User Profile for user11261773
user11261773
Handle:     user11261773
Status Level:     Newbie
Registered:     Jul 14, 2011
Total Posts:     12
Total Questions:     6 (5 unresolved)
>
Edited by: CKPT on Mar 18, 2012 8:14 PM

Still need to do full backup after using data guard?

In our system, there is a physical standby database in data guard configuration. Is there still a need to do full backup and incremental backup?

Jackliusr wrote:
In our system, there is a physical standby database in data guard configuration. Is there still a need to do full backup and incremental backup?Preferred to have full backup daily.
May be you can perform failover of your standby, in case there is no availability on primary database. Then do you think the standby system stability is same as primary and can give same performance?
standby location can be too far and this is only if in case of disaster.
Another case, lets suppose your standby is behind than primary for 4-5 days due to some issues. At the same time your production crashed then you may have chance to loose 4-5 days fo data. So recommended to have full backup always from primary database.
If you are checking stability of standby database daily and able to check your data by opening properly and you wont prefer to RMAN backup, Then it is fine. But it is highly recommended to have RMAN backup.
BTW, You can have RMAN full backup on standby, if you want to avoid resources to use on primary

Need some low level help/info on Grid Control / Data Guard

I need to get some info concerning the set up and administration of Grid Control. In particular, I need to know why Grid Control needs to have the Oracle OS-Level username and password stored in Grid Control in order for GC to set up and manage a Data Guard database.
Is it because when the database is being created, GC issues commands like RMAN and SCP to put files onto the standby host?
Also, for accountability purposes, can I not use a named user account (with the same privs as the oracle user) saved as the preferred credential and still perform the necessary functions to use DG and GC together effectively.
Probably a lot of info and variables, and I've not explained much, but happy to explain further if needed.
Thanks!
Edited by: joe.bednarz on Oct 14, 2009 9:38 AM

Thanks for the input... we need to use another account other the "oracle" account so there is some accountability for who does what. If I create an account that has similar privileges as the oracle user, I can still run all things Oracle, while still having a log of my log in time and actions.
More of security issue...
Thanks again. Appreciate it!

Parameters need to configure Data Guard with Data Guard Broker

Hi gurus,
I'm following this guide http://www.oracle.com/us/solutions/sap/wp-ora4sap-dataguard11g-303811.pdf, but it isn't clarify what parameters we need to set to get the service up.
I noticed that we can setting up for two ways, either Oracle Enterprise Manager or Data Guard Broker. Do we need to configure the same parameters to OEM and after to activate the DGMGRL?
Can you help me?
Thanks,
Denis
Brazil

Hi mseberg,
Thanks for your help.
I want to adjust my listener.ora and tnsnames.ora files to access the rman like this guide https://sites.google.com/site/universodobraga/oracle/standby-11g.
Follow its:
* Primary*
listener.ora
LISTENER =
(ADDRESS_LIST =
(ADDRESS=
(PROTOCOL=IPC)
(KEY= TSA.WORLD)
(ADDRESS=
(PROTOCOL=IPC)
(KEY= TSA)
(ADDRESS =
(COMMUNITY = SAP.WORLD)
(PROTOCOL = TCP)
(HOST = unbru11)
(PORT = 1527)
STARTUP_WAIT_TIME_LISTENER = 0
CONNECT_TIMEOUT_LISTENER = 10
TRACE_LEVEL_LISTENER = OFF
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SDU = 32768)
(GLOBAL_DBNAME = primarydb_DGMGRL)
(SERVICE_NAME = tsa)
(SID_NAME = tsa)
(ORACLE_HOME = /oracle/TSA/112_64)
tnsnames.ora
TSA_PRIMARY.WORLD=
(DESCRIPTION =
(SDU = 32768)
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = SAP.WORLD)
(PROTOCOL = TCP)
(HOST = unbru11)
(PORT = 1527)
(CONNECT_DATA =
(SID = tsa)
(GLOBAL_NAME = tsa.WORLD)
(SERVICE_NAME = primarydb_DGMGRL)
TSA_STANDBY.WORLD=
(DESCRIPTION =
(SDU = 32768)
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = SAP.WORLD)
(PROTOCOL = TCP)
(HOST = unbru10)
(PORT = 1527)
(CONNECT_DATA =
(SID = tsa)
(GLOBAL_NAME = tsa.WORLD)
(SERVICE_NAME = standbydb_DGMGRL)
- Standby
listener.ora
LISTENER =
(ADDRESS_LIST =
(ADDRESS=
(PROTOCOL=IPC)
(KEY= TSA.WORLD)
(ADDRESS=
(PROTOCOL=IPC)
(KEY= TSA)
(ADDRESS =
(COMMUNITY = SAP.WORLD)
(PROTOCOL = TCP)
(HOST = unbru10)
(PORT = 1527)
STARTUP_WAIT_TIME_LISTENER = 0
CONNECT_TIMEOUT_LISTENER = 10
TRACE_LEVEL_LISTENER = OFF
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SDU = 32768)
(GLOBAL_DBNAME = standbydb_DGMGRL)
(SERVICE_NAME = tsa)
(SID_NAME = tsa)
(ORACLE_HOME = /oracle/TSA/112_64)
tnsnames.ora
TSA_PRIMARY.WORLD=
(DESCRIPTION =
(SDU = 32768)
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = SAP.WORLD)
(PROTOCOL = TCP)
(HOST = unbru11)
(PORT = 1527)
(CONNECT_DATA =
(SID = tsa)
(GLOBAL_NAME = tsa.WORLD)
(SERVICE_NAME = primarydb_DGMGRL)
TSA_STANDBY.WORLD=
(DESCRIPTION =
(SDU = 32768)
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = SAP.WORLD)
(PROTOCOL = TCP)
(HOST = unbru10)
(PORT = 1527)
(CONNECT_DATA =
(SID = tsa)
(GLOBAL_NAME = tsa.WORLD)
(SERVICE_NAME = standbydb_DGMGRL)
When i tried to connect by RMAN:
RMAN> connect target sys/manager@tns_primary.world
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
ORA-01031: insufficient privileges
Environment
Oracle 11.2.0.3
Aix 6.1
SAP Ecc
Thanks very much,
Denis
Brazil

Active Data Guard Licensing

I have no idea where to ask this question and if I'm asking in the wrong forum I'd appreciate it if someone can direct me to the right one.
I have a physical standby server and I'd like add the Active Data Guard option to it to offload ETL processing. If I want to use named user plus licensing, how many named users to I need to pay for? There is only 1 server, 1 process, and 1 user that will be pulling data from this standby server into a SQL Server landing store database. Eventually the data will make it into a data warehouse (also SQL Server), SQL Server Reporting Services, and SQL Server Analysis Services. Between SSAS and SSRS there might be 100 distinct users on the front end, but they are all several levels removed from the standby server.
So the question is how many named users do I need to buy? The definition of "named user plus" in the licensing definitions is about as clear mud. I think I only need 1. But it could be 25 based on minimum # of users for EE. And it could be 100 if every user of SSRS and SSAS is counted individually.
I'm trying to avoid doing processor based licensing which is equally unclear but on initial impression seems to be much more expensive. The standby server in question has 2 dual core intel xeon processors, running on Windows 2008 R2. The version of Oracle is 11GR2 Enterprise Edition. If I've done the math right, processor licensing comes out to 23k.

Hello;
Active Data Guard does need a license and you are in the correct forum. But only your Oracle salesperson can answer this question.
Was at Cloud Control class last month and several DBA's there thought everyone has a similar license agreement. Not true. So somebody here might guess at your answer, but in the end only Oracle's answer will count.
Best Regards
mseberg

Should e-book Data Guard Concepts and Administration be useless for us?

I think The Data Guard Broker is an easy and efficient way to manage a Data Guard configuration. The Data Guard Broker provides us with two efficient tools: EM Console and DGMGRL. We can do everything we want for Data Guard system.
Why we spend so much time to read Oracle e-book Data Guard Concepts and Administration? I think it is useless. Only Broker is enough?

Frank,
The thing is GUI tool itself is also program that need some one to manage. The developer of such tools cannot take care unlimited possibilities in the real world.
Just check how many threads in this forum about why emca, dbca and EM console not working.
Being a DBA, we should understand the underlying technology that driven the system. It's like driving a car. A regular customer could say I don't care about mechanics of a car. As long as it's running, that's enough. But we are not regular customer, we suppose to be the auto repair mechanician in Oracle world. We could enjoy driving a car, but at same time we should know why and how it's working.

Delete expired data guard

Hi,
I got a question regarding the primary db and the data guard db. I had to reduce the amount of files retained due to space limitations on the primary. When I clicked on the delete expired button and the job is run the files that are deleted on the primary are they also deleted on the data guard db? If not will this cause a problem if when a fail over or switch over is needed?
Thanks in advance for your help.
al

Good Morning Kam Singh
I just have one additional question that occurred to me last night at home. There was an issue with hard parsing that my ADDM advised increasing my SGA by 2.5 gigs. Someone on the forum here was kind enough to give me the view V$sgainfo to find out how much free memory was available in my system. Well when I interrogated this view it came up with a big fat zero availability. Now from what I understood from my readings was that 10g sga was dynamic. That the memory processes are adjusted to need from information taken from the AWR. At the page where the ADDM listed a button to implement the change (increase) I hesitated until I found out how much free was available. Right now I am glad that I did. My question is If I did click on that implementation button would have the oem tool taken the memory not being used from some other location and allocate it to this spot or would it have returned an error of some kind?
You may have more experience with this and may have come across this situation than I. Do you recall what you did?
Does anyone else recall what they did in this situation?
Please give advise.
Regards to all,
al

Data guard between different platforms?

I'm pretty sure the answer is no but just want to be sure, so my question is...Can you have a data guard physical standby server that is running on a different platform than the primary?
For instance, We have just been informed by our sakes rep that Oracle is dropping the Itanium platform because future releases of red hat will no longer be supporting the Itanium platform and that Oracle is following the red hat model...
Can we setup dataguard to migrate off of current hardware platform to a new X86_64 platform?
Thanks.

user520056 wrote:
I'm pretty sure the answer is no but just want to be sure, so my question is...Can you have a data guard physical standby server that is running on a different platform than the primary?No, this is not possible.
For instance, We have just been informed by our sakes rep that Oracle is dropping the Itanium platform because future releases of red hat will no longer be supporting the Itanium platform and that Oracle is following the red hat model...
Can we setup dataguard to migrate off of current hardware platform to a new X86_64 platform?
Thanks.This would follow the same rule that both, primary and standby must run on the same platform and o/s. So I guess, the answer would be that you would need to move both of your servers. But, just to be assure, you should raise the same question on the dedicated forum of dataguard where product manager of DG , Larry Carpenter hangs around as well. That would be the place where I would ask my data guard doubts.
Data Guard
HTH
Aman....

Display Data Guard Configuration

Hi All,
We have two Windows 2008 VMs with Oracle 11G configured as primary and standby.
This configuration has been defined by a partner who is no longer working for us.
We have broken the correct application of the redo log on the standby when we have not correctly restored some snapshots on those two VMs.
I would like to create a new Oracle server that will become the new standby. For that, I need too :
- Display the full dataguard configuration to reproduce it on the new server
- Stop (delete ?) the configuration on the primary server.
We also have the current problem that RMAN refuses to delete old archivelog since they have not been applied to the standby.
Thanks for any help about those subjets,
Eric FRIGOT

999188 wrote:
Hi All,
We have two Windows 2008 VMs with Oracle 11G configured as primary and standby.
This configuration has been defined by a partner who is no longer working for us.
We have broken the correct application of the redo log on the standby when we have not correctly restored some snapshots on those two VMs.
I would like to create a new Oracle server that will become the new standby. For that, I need too :
- Display the full dataguard configuration to reproduce it on the new server
- Stop (delete ?) the configuration on the primary server.
We also have the current problem that RMAN refuses to delete old archivelog since they have not been applied to the standby.
Thanks for any help about those subjets,
Eric FRIGOTHi,
Welcome to OTN Forums!
Then, you must restore same time snapshots both machines.
If not same time snapshots, then
1. Restore primary server snapshot.
2. Create a VM for standby again.
3. Safety remove DG configuration from Primary server.
4. Create new standby and DG configuration again.
P.S Check this video : http://www.mahir-quluzade.com/2012/01/overview-data-guard-configuration.html
Regards
Mahir M. Quluzade

Data Guard Set-up

Hi All,
Platform - RHEL 6, Oracle 11gR2.
My Primary server is new hardware with more space and memory. The data files are striped across more mount points. Memory - 16G
Plan to install a Oracle Data Guard 11gR2 on a old server for testing only. Memory 3G. Due to lack of space we can't have so many mount points as production.
My question is Can I setup Data Guard in this limitation on my test server. How will it map with the mount points in production system.?
Is there any good document on this.?

My Primary server is new hardware with more space and memory. The data files are striped across more mount points. Memory - 16G
Plan to install a Oracle Data Guard 11gR2 on a old server for testing only. Memory 3G. Due to lack of space we can't have so many mount points as production.
My question is Can I setup Data Guard in this limitation on my test server. How will it map with the mount points in production system.?The setup is same, But it will depends on how you use parameters.
Lets suppose you want to perform to build standby using RMAN duplicate, Even the datafiles are stripped in different mount points, just you need to take care of parameters
Ex: primary locations /u01/oradata/prod, /u02/oradata/prod, /u03/oradata/prod
Standby location just /u05/oradata/stby
So you have to configure them as
DB_FILE_NAME_CONVERT='/u01/oradata/prod','/u05/oradata/stby','/u02/oradata/prim','/u05/oradata/stby','/u03/oradata/prod','/u05/oradata/stby'
Also take care of LOG_FILE_NAME_CONVERT
refer this.
http://docs.oracle.com/cd/B19306_01/server.102/b14237/initparams048.htm
Remaining configuration is same. check below links for that
http://docs.oracle.com/cd/B19306_01/server.102/b14239/rcmbackp.htm#i636427
Step By Step Guide To Create Physical Standby Database Using RMAN [ID 469493.1]
You can perform RMAN duplicate from active database for the versions from 11gRx
http://docs.oracle.com/cd/B28359_01/server.111/b28294/rcmbackp.htm#i636427
Thanks.
>
user13355115
     Newbie
Handle:      user13355115
Status Level:      Newbie
Registered:      Aug 1, 2010
Total Posts:      146
Total Questions:      62 (56 unresolved)
>
Consider closing thread if answered and keep the forum clean.
Thanks.
Edited by: CKPT on Apr 18, 2012 1:58 PM

View Log in Data Guard

In dataguard when i check view log(OBJECT-Viewlog) it return
"Data Guard Remote Process Startup Fail"?
Regards

hi there,
What's your question and you need to provide the version and the type of standby db too?

How to update need by date in Purchase order using an API?

Hi All,
Is there any API available in 11i which can be used to update the need by date in purchase order?
There is a API PO_CHANGE_API1_S.UPDATE_PO, but it updates only the promise date and not the need by date.
Please help !!
Thanks & Regards
Anuj

Your error comes from Sybase, so I suggest you post your question to a Sybase forum. And be aware that Sybase does not use the same tsql dialect as sql server, so you must use their dialect (if, indeed, there is any difference in this particular situation).
One note - there should be no space between "N" and the Unicode string literal to which it applies in tsql. E.g.,
= N'Executive Chair эюя'
not
= N 'Executive Chair эюя'

How do i find dataloss in Data Guard?

We are using redo log, in async mode, following is our setting.
SERVICE=xxx_sb max_failure=100 reopen=600 LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=xxx_sb
When i query V$managed_Standby for delay_mins, its always zero. Meaning there is no delay in copying a log. I have 2 questions..
1. How can i communicate to business that in worst case we will lose x Mintues of data? Its an OLTP, where the transactions are less then 2mins. Also during the night there are some batch jobs where the transactions are 60mins longs.
2. Most of the time during peak hours there is a log switch happening every 10-15mins but during non-peak it may not happen for a long period of time, is it advisable to set ARCHIVE_LAG_TIME to 10 mins? as im not using archiver , we are using log writer for standby.
any explanation or point to documentation would be appreciated,
Thanks,

Production databases who are running with fully fined configured Data Guard, do'nt have any dataloss because failover operation ensures zero data loss if dataguard is configured with maximum protection mode or maximum availability mode at failover time.
http://www.dbazone.com/docs/oracle_10gDataGuard_overview.pdf
The above pdf is oracle white paper which too confirmed it.
LGWR SYNC AFFIRM in Oracle Data Guard is used for zero data loss. How does one ensure zero data loss? Well, the redo block generated at the primary has to reach the standby across the network (that's where the SYNC part comes in - i.e. it is a synchronous network call), and then the block has to be written on disk on the standby (that's where the AFFIRM part comes in) - typically on a standby redo log.
Can you have LGWR SYNC NOAFFIRM? Yes sure. Then you will have synchronous network transport, but the only thing you are guaranteed is that the block has reached the remote standby's memory. It has not been written on to disk yet. So not really a zero data loss solution (e.g. what if the standby instance crashes before the disk I/O).
To sum up -> LGWR SYNC AFFIRM means primary transaction commits are waiting for ntk I/O + disk I/O acks. LGWR SYNC NOAFFIRM means primary transaction commits are waiting for ntk I/O only.
Source:http://www.dbasupport.com/forums/showthread.php?t=54467
HTH
Girish Sharma

Need a Data Guard forum

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