Database is configured for Data Guard

I am run a UTF8 conversion on a development database that has been cloned from Data Guard. There is a warning in Migration Status: "Database is configured for Data Guard" What is the DMU looking at to determine this? The database is open in read-write mode and it behaving like a primary database (I run the DMU scan and run updates to fix invalid representations). I would like to know what settings I need to update.
Is this preventing me from converting tables using CTAS? When I try to select this for all tables I get the message, "The DMU does not support the conversion method "Copy data using CREATE TABLE AS SELECT" for tables that are involved in an Oracle Streams process, like capture or apply. Use another available conversion method for the table"
Thanks,
Ben

The DMU checks if the parameter DG_BROKER_START is set to true.
The problem with CTAS is independent from Data Guard. The DMU checks for tables that:
- are source of asynchronous Streams capture, or
- have update conflict handlers, or
- have DML handlers, or
- have conflict resolution parameters
The above tables are considered configured for Oracle Streams and are not supported by CTAS conversion method. This is because the CTAS method creates a converted copy of the table and drops the original. The DMU is not capable of moving the Streams configuration information from the old table to the new one.
Thanks,
Sergiusz

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Best Practice for monitoring database targets configured for Data Guard

We are in the process of migrating our DB targets to 12c Cloud Control.
In our current 10g environment the Primary Targets are monitored and administered by OEM GC A, and the Standby Targets are monitored by OEM GC B. Originally, I believe this was because of proximity and network speed, and over time it evolved to a Primary/Standby separation. One of the greatest challenges in this configuration is keeping OEM jobs in sync on both sides (in case of switchover/failover).
For our new OEM CC environment we are setting up CC A and CC B. However, I would like to determine if it would be smarter to monitor all DB targets (Primary and Standby) from the same CC console. In other words, monitor and administer DB Primary and Standby from the same OEM CC Console. I am trying to determine the best practice. I am not sure if administering a swichover from Cloud Control from Primary to Standby requires that both targets are monitored in the same environment or not.
I am interested in feedback. I am also interested in finding good reference materials (I have been looking at Oracle documentation and other documents online). Thanks for your input and thoughts. I am deliberately trying to keep this as concise as possible.

OMS is a tool it is not need to monitor your primary and standby what is what I meant by the comment.
The reason you need the same OMS to monitor both the primary and the standby is in the Data Guard administration screen it will show both targets. You also will have the option of doing switch-overs and fail-overs as well as convert the primary or standby. One of the options is also to move all the jobs that are scheduled with primary over to the standby during a switch-over or fail-over.
There is no document that states that you need to have all targets on one OMS but that is the best method for the reason of having OMS. OMS is a tool to have all targets in a central repository. If you start have different OMS server and OMS repository you will need to log into separate OMS to administrator the targets.

Init SID .ora during configuration of Data Guard - advice required

Hi All,
I am looking to implement data guard across 2 RAC clusters. One cluster will be primary and the other is for Disaster Recovery.
I have already set up the two 11g R 2 RAC clusters on RHEL 5 and now need some pointers to good docs for data guard install.
Can some one direct me to good step by step info for configuring data guard between to RAC clusters - detailed explanations of each step would be useful too, in particular around the init.ora file configuration changes between the primary and DR sites
Much appreciated
Steve

Hi Steve,
look at the MAA Whitepapers:
http://www.oracle.com/technetwork/database/features/availability/oracle-database-maa-best-practices-155386.html
There are very good ressources in setting up RAC DG environments like:
Data Guard 11g Installation and Configuration Best Practices on Oracle RAC
Rapid Oracle RAC Standby Deployment: Oracle Database 11g Release 2
Setup Guide: Creating a RAC Logical Standby Database for a RAC Primary Database
Client Failover in Data Guard Configurations for Highly Available Oracle Databases
a.s.o.
Sebastian

Separate listener for Data Guard

I am setting up a best practice about using a dedicated listener for Data Guard. The idea is to maintain full functionality of Data Guard while application team is requesting to bring down listener service (according to business requirement). Need your opinion on these:
1. I understand that there may be a very little chance when listener is required by Data Guard, but I find it no harm to do this. Do you agree with me?
2. In RAC environment, we can only have 1 VIP to be used in listener.ora. I am thinking of using same IP but different port numbers for different listener. Any better idea than this?
Many thanks

It is never a bad practice to use separate listeners at the primary and at the Standby for Data Guard's use. A listener at the standby is required by Data Guard to make a connection to that standby. A listener at the Primary is required for Data Guard to make a reverse connection from the Standby to the Primary for some kinds of Gap resolution (missing log file the the Primary thinks it already sent or a corrupted log file etc). And of course, when you switch roles.
To answer the second question could you please tell me what version of Oracle you are using and if you plan on using the Data Guard Broker or not?
Thanks.
Larry

Configure listener for data guard

HI everyone,
I am currently setting data guard (Physical standby database) for my database. But I have problem to configure the listener on both servers. Can anyone provide me some example?
Oracle: 10g R2
O/S: Windows
Primary database ken10g
standby database: ken10gbk
Following is the content of my current listener files on both of servers:
Primary server:
# listener.ora Network Configuration File: C:\oracle\product\10.2.0\db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oracle\product\10.2.0\db_1)
(PROGRAM = extproc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = Primary_server)(PORT = 1521))
Standby Server:
# listener.ora Network Configuration File: C:\oracle\product\10.2.0\db_1\NETWORK\ADMIN\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oracle\product\10.2.0\db_1)
(PROGRAM = extproc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = standby_server)(PORT = 1521))
Thanks in advance.
Ken

Hi Ken,
You need to configure this on both primary and standby, I would have kept different listener name on primary and standby. Also if you are going to use dataguard broker you would need to set GLOBAL_DBNAME in your listener.ora file
I have give a sample entry for tnsnames.ora and listener.ora
TNSNAMES.ORA on primary
STNDBY =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = node2-prv)(PORT = 10521))
(CONNECT_DATA =
(SERVICE_NAME = STNDBY)
PRIM =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = node1-prv)(PORT = 10521)))
PRIMARY =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = node1-prv)(PORT = 10521))
(CONNECT_DATA =
(SERVICE_NAME = PRIMARY)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
Copy the same file to the standby server and adjust it based on the listener.ora file. Also update the listener.ora file so that it listen the SIDs mentioned in the tnsnames.ora file.
Listener.ora
LISTENER_STBY =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = node2-prv)(PORT = 10521))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
SID_LIST_LISTENER_STBY =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0/db10g)
(PROGRAM = extproc)
(SID_DESC =
(SID_NAME = stndby)
(GLOBAL_DBNAME = stndby_DGMGRL)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0/db10g)
)

Steps for data guard RAC primary RAC standby

Hi,
I have some doubt in configuring data guard for rac DR to rac primary.
1) In RAC DR, physical standby will be in RAC before starting data guard for RAC Primary , right?.
2) While configuring RAC DR , should one node be down in standby?.
3) After creating the auxiliary database in standby, i mean restoring the rman backup from staging directory in DR,
Shall we have to register the services(database,instance,asm,etc..) to CRS(OCR)?. If yes ,Why?.
4) After DR configure over , Shall i shut/down one node?. Should all the nodes in DR be in up , while applying logs to
standby ?.
If anybody have made the setup and have the prepared document , requesting you to share with me.
Thank you very much,
Sunand

Hi Sunand,
Please follow the following My Oracle Support (MOS) Document ID:
MAA - Creating a RAC Physical Standby for a RAC Primary [ID 380449.1]
For further details, see the referred documents in previous post. Try practicing on VMWare because it will give you the flexibility for creating snapshots to save your work. Please see the answers for your question below:
Q1. In RAC DR, physical standby will be in RAC before starting data guard for RAC Primary , right?.
Answer: Yes, this is recommend but not mandatory. You can add a second node later on.
Q2. While configuring RAC DR , should one node be down in standby?
Answer: Yes, there are some database configuration commands that should be run in exclusive mode. You can start the remaining instance(s) after DB creation. Do not forget to set CLUSTER_DATABASE parameter to TRUE. Also, all instances except one should be close while performing switchover/failover.
Q3. After creating the auxiliary database in standby, i mean restoring the rman backup from staging directory in DR, Shall we have to register the services(database,instance,asm,etc..) to CRS(OCR)?. If yes ,Why?
Answer: Yes, this is recommended for RAC configuration to take advantage of high availability services.
Q4. After DR configure over , Shall i shut/down one node?. Should all the nodes in DR be in up , while applying logs to
standby ?
Answer: You can start up all the instances after DR creation. In this case if your one node goes down log apply services will continue to apply changes in DR.
Hope, this helps to clear your questions.
Regards,
Shahid

Database issues after starting data guard

Hi. We run OEM12c in Linux. All is working well and we monitor several targets and DBs.
In our QA db server, sun solaris 11 running oracle 10g, we started to test data guard configuration for several instances we are running there. our standy server is called STDBY. All works fine, but now we have a problem managing some aspects of data guard with OEM12c.
First problem is that the instances appear as SID_IPaddress of server, as opposed as DB_UNIQUENAME.DB_DOMAIN. curiously enough, the std by copy, appears correctly (SID_sbyp.db_domain)... This is very puzzling...
Second problem is when we try to access the Data Guard performance pane, it fails showing (both in primary and secondary DBs)
Data Guard Internal Error : See the OMS log for details.
No clue where to look for this problem.
All other functions, TOP, performance home, etc... look fine.

Hi ,
Regarding "Data Guard Internal Error : See the OMS log for details"
Follow the below steps
On the Data Guard Page run the 'Verify Configuration'-Option twice. The first Execution will show an Output like
Initializing
Connected to instance test.oracle.com:mydb
Starting alert log monitor...
Updating Data Guard link on database homepage...
WARNING: Broker name (mytest) and target name (mydb) do not match.
WARNING: The broker name will be renamed to match the target name.
Skipping verification of fast-start failover static services check.
Data Protection Settings:
Protection mode : Maximum Performance
Redo Transport Mode settings:
pnjpcep1: ASYNC
cnjpcep1: ASYNC
Checking standby redo log files.....not checked due to broker name mismatch. Run verify again.
Checking Data Guard status
mydb : Normal
my11g : Normal
Tthe second Execution does not show this Warning any more, ie. it got fixed during the first Execution. Now it's possible to access the Data Guard Performance Page without Errors and you can see the Statistics.
Ref
Cloud Control: "Data Guard Internal Error" raised on Data Guard Performance Page (Doc ID 1484028.1)
Regards,
Rahul

Steps for Data Guard with one primary and 2 standby

Hi,
Database :10.2.0.4, 11.2.0.1
Os: Windows , Unix
A ----------------> Primary database
B ----------------> Standby Database 1
C ----------------> Standby Database 2
I want to configure *2 standby* databases for single primary database.
Lets take, A ,B and C are my machines.My data guard configuration will be like,*archive logs will be moving* from A to B and A to C.
If i do any switchover in between A and B , now B is primary and remaining A and C are standby databases.At this stage also , archive logs should move from B to A and B to C. Also, same should happen from C to A and C to B,If i do switchover in between B and C.If everything is fine , then i will do switchback to main Primary database(A).
How do i have to mention PFILE in all machines ,the parameters like
LOG_ARCHIVE_DEST_1=LOCATION=<PATH> -- LOCAL ARCHIVE PATH
LOG_ARCHIVE_DEST_2=SERVICE=
LOG_ARCHIVE_DEST_3=SERVICE=
FAL_SERVER=
FAL_CLIENT=
STANDBY_FILE_MANAGEMENT=
In my tnsnames.ora , primary,standby1 and standby2 are my service entries and these are same in all of my machines.
Please suggest me , how do i can configure my pfiles in all machines ?.
Thanks,
Sunand

Not yet, but now you have me interested.
Please consider Flashback.
I still have to test but here's my take:
PRIMARY SETTINGS
*.FAL_SERVER=STANDBY
*.FAL_CLIENT=PRIMARY
*.STANDBY_FILE_MANAGEMENT=AUTO
*.DB_UNIQUE_NAME=PRIMARY
*.LOG_FILE_NAME_CONVERT='STANDBY','PRIMARY'
*.log_archive_dest_1='LOCATION=USE_DB_RECOVERY_FILE_DEST VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=PRIMARY'
*.log_archive_dest_2='SERVICE=STANDBY LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=STANDBY'
*.log_archive_dest_3='SERVICE=STANDBY2 LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=STANDBY2'
*.LOG_ARCHIVE_DEST_STATE_1=ENABLE
*.LOG_ARCHIVE_DEST_STATE_2=ENABLE
*.LOG_ARCHIVE_DEST_STATE_3=ENABLE
*.LOG_ARCHIVE_MAX_PROCESSES=30
STANDBY 1 SETTINGS
*.FAL_SERVER=PRIMARY
*.FAL_CLIENT=STANDBY
*.STANDBY_FILE_MANAGEMENT=AUTO
*.DB_UNIQUE_NAME=STANDBY
*.LOG_FILE_NAME_CONVERT='PRIMARY','STANDBY'
*.log_archive_dest_1=LOCATION=USE_DB_RECOVERY_FILE_DEST VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=STANDBY'
*.log_archive_dest_2='SERVICE=PRIMARY LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=PRIMARY'
*.log_archive_dest_3='SERVICE=STANDBY2 LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=STANDBY2'
*.LOG_ARCHIVE_DEST_STATE_1=ENABLE
*.LOG_ARCHIVE_DEST_STATE_2=DEFER
*.LOG_ARCHIVE_DEST_STATE_3=DEFER
*.LOG_ARCHIVE_MAX_PROCESSES=30
STANDBY2 SETTINGS
*.FAL_SERVER=PRIMARY
*.FAL_CLIENT=STANDBY2
*.STANDBY_FILE_MANAGEMENT=AUTO
*.DB_UNIQUE_NAME=STANDBY2
*.LOG_FILE_NAME_CONVERT='PRIMARY','STANDBY2'
*.log_archive_dest_1=LOCATION=USE_DB_RECOVERY_FILE_DEST VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=STANDBY2'
*.log_archive_dest_2='SERVICE=STANDBY LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=STANDBY'
*.log_archive_dest_3='SERVICE=PRIMARY LGWR ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=PRIMARY'
*.LOG_ARCHIVE_DEST_STATE_1=ENABLE
*.LOG_ARCHIVE_DEST_STATE_2=DEFER
*.LOG_ARCHIVE_DEST_STATE_3=DEFER
*.LOG_ARCHIVE_MAX_PROCESSES=30
Edited by: mseberg on Nov 29, 2010 9:39 AM
The first test slapped me. Looking at 409013.1 Cascaded Standby Databases
Edited by: mseberg on Nov 29, 2010 12:49 PM

How to add in ODBC connection and configuration for data connection

Hello expert,
on my computor, there is a oracle client for oracle 10g. now there is new oracle 11g installed , I want to create a ODBC connection to this new database. but when I create ODBC , I can't find server type for oracle 11g , there only has driver for oracle 10g. will you please tell me how to create ODBC for this new DB? will you please tell me where is the configuration file for data source on my computor?
Many Thanks,

918440 wrote:
Hello expert,
on my computor, there is a oracle client for oracle 10g. now there is new oracle 11g installed , I want to create a ODBC connection to this new database. but when I create ODBC , I can't find server type for oracle 11g , there only has driver for oracle 10g. will you please tell me how to create ODBC for this new DB? will you please tell me where is the configuration file for data source on my computor?
Many Thanks,So, on this machine you have
- Oracle 10g client (only), and in a seperate ORACLE_HOME
- Oracle 11g rdbms
First, the 10g client will connect quite well to the 11g database
Second, the 11g database includes the basic client admin software, but the odbc drivers are not installed by default. You have to run OUI and choose 'custom' installation, then select 'windows components' from the list of available components.
I've never wanted to install the odbc driver as part of the database installation. Only on remote client installations.
What are you really trying to achieve?

Question on db_unique_name in init.ora for Data Guard

I need to set up only one physical standby on a different box (at a different location) for the primary db in production.
OS: Sun Sparc Solaris 10
Oracle: 10.2.0.3
Can I use the same db_unique_name in init.ora for both primary and standby DBs?
What are the minimal parameters required by Data Guard I have to specify in the init.ora in my case?
Could anyone please post an example of init.ora for both primary and standby DBs?
Thanks very much in advance.

http://download.oracle.com/docs/cd/B19306_01/server.102/b14239/create_ps.htm#i63561

Is OEM database control configured for the DBs?

Hi
I have multiple oracle (10gR2) databases running on a linux (5.8) server. How can I check that for which of the databases has the OEM Database Control been configured and on what port is it listening?
Best regards

Thank you everyone!
Here is what I see (I have changed the DB names):
==============
[oracle@vm58-1 install]$ emctl status dbconsole
TZ set to US/Eastern
Oracle Enterprise Manager 10g Database Control Release 10.2.0.4.0
Copyright (c) 1996, 2007 Oracle Corporation. All rights reserved.
https://vm58-1.com:1158/em/console/aboutApplication
EM Daemon is not running.
Logs are generated in directory
/u01/app/oracle/product/10.2.0/db_1/vm58-1.com_db1/sysman/log
[oracle@vm58-1 install]$ export ORACLE_SID=db2
[oracle@vm58-1 install]$ emctl status dbconsole
TZ set to US/Eastern
OC4J Configuration issue.
/u01/app/oracle/product/10.2.0/db_1/oc4j/j2ee/OC4J_DBConsole_vm58-1.com_db2
not found.
[oracle@vm58-1 install]$
==============
So it seems that DB Console was configured for db1. When I try to start it, I get following output
========
[oracle@vm58-1 install]$ export ORACLE_SID=db1
[oracle@vm58-1 install]$ emctl start dbconsole
TZ set to US/Eastern
Oracle Enterprise Manager 10g Database Control Release 10.2.0.4.0
Copyright (c) 1996, 2007 Oracle Corporation. All rights reserved.
https://vm58-1.com:1158/em/console/aboutApplication
Starting Oracle Enterprise Manager 10g Database Control
========
And these "dots" just continue to appear and it is running for 15+ minutes now.
Please advise how to check what is happening.
Grid Control suggestion - I agree. I believe Grid Control is not free and the client does not seem to be interested to spend more money :-)
Best regards

Use dedicated server for data guard?

Hi All,
I've heard from someone that it is possible to separate data guard from the database and put it to a server, such that the data guard server will be dedicated to shipping log to standby site db etc. I don't know if such architecture would work. Could anyone please clarify it? Thanks in advance.

An Introduction to Data Guard from Oracle Doc's is here:
http://download.oracle.com/docs/cd/B19306_01/server.102/b14239/concepts.htm#i1039416

HELP ME. Client Configuration with Data Guard

Hi,
I made a DATA GUARD configuration with Oracle 10g r2 and GRID CONTROL 10.2.0.3.
I've 1DB OMS, 1 DB primary, 1 DB standby phisical, 1 DB observer, fast-startfailover on.
Everything works fine: failover, switchover.
My question is: how the client knows what DB is open when the primary DB fail? How to configure the client can know what the DB is active?
thanks.

Configure the client failover in the tnsnames.ora. The How To will be in the Data Gaurd configuration guide you are using.

License for Data Guard 11g - Observer

Hi,
I would like to know if fast-failover with Observer requires any additional licensing then just Data Guard.
Thanks in advance.

My first stop would be.... [Oracle 11g Licensing Information|http://download.oracle.com/docs/cd/B28359_01/license.111/b28287/toc.htm|Oracle 11g Licensing Information]. After that I would look at the Data Guard documentation.
HTH!

Configuring & Managing Data Guard 11g R2 with OEM 11g

Hi All,
Please let me know how to configure OEM for already setup standby database in Enterprise Manager

Hello;
So you did not Reinstate correct? Please understand it is very difficult to help you when you don't answer the questions.
My failover test notes are here :
http://www.visi.com/~mseberg/Data_Guard_Failover_Test_using_SQL.pdf
Oracle support has an excellent note :
Step by Step Guide on How To Reinstate Failed Primary Database into Physical Standby [ID 738642.1]
Feedback is critical when you ask a question. I searched and found this :
STAND BY DATABASE
But nothing more came of it so I have no idea if I'm helping or not.
Best Regards
mseberg
Edited by: mseberg on Jun 18, 2012 3:09 PM

Database is configured for Data Guard

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