SDU Dataguard configuration

Please,
Looking for some clarification implementing SDU parameter file.
I'm configuring Dataguard using Oracle 10g,Release 2 on Windows
In order to best use data size sent amoung primary,standby and clients application oracle recommends to configure SDU parameter for the highest size.
Network configuration.
Primary database
( [i]SQL net files mandatory: Listener,sqlnet.ora and tnsnames.ora)
Secondary database
(SQL net files mandatory: Listener,sqlnet.ora and tnsnames.ora)
Citrix server acting as client to the primary database
(SQL net files mandatory: sqlnet.ora and tnsnames.ora)
Users connect to the database through citrix
Communication between Primary and Secondary database
if I set the DEFAULT_SDU_SIZE=32767 on both primary and secondary database in SQLnet.ora file, I do not need to set this parameter either in tnsnames.ora nor listener.ora file on both primary and secondary database?
Communication between citrix client and primary database.
I should only set DEFAULT_SDU_SIZE=32767 into sqlnet.ora file for all connections involved.
My big trouble is, when reading the Oracle Maximum Availability Architecture White Paper February 2007 they recommend to:
specify on the primary database: DEFAULT_SDU_SIZE=32767 into sqlnet.ora file
On the standby database, set SDU in the SID_LIST of the listener.ora file: SID_LIST_listener_name=(SID_LIST= (SID_DESC= (SDU=32767) (GLOBAL_DBNAME=sales.us.acme.com) (SID_NAME=sales) (ORACLE_HOME=/usr/oracle))) ---> this configuration is a static registration!, my secondary database was configured for dynamic registration, The static registration on standby side is mandatory ?,or there is an alternative ? for example on the standby specify only in the sqlnet.ora
DEFAULT_SDU_SIZE=32767?
Any suggestion may help me enough
Thanks

Hello,
I guess it all depends on what you expect fro the standby. What kind of protection mode are you using? Do you have any delay configured? Is it doing real time recovery? And more.
Can you be specific regarding the requirements that your organization has for this DRP?
Regards,
Yuri Gorelik
[http://it.toolbox.com/blogs/living-happy-oracle]

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Hi,
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http://emrebaransel.blogspot.com/2009/02/10204-upgrade-with-dataguard.html
user1982050 wrote:
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Third party backup software support for dataguard configurations

Any Oracle document about the subject?
I would be interested in an answer about backupexec 2010 r2 in particular, because reading the manual for its oracle agent there is information about Oracle/RMAN and RAC support, but nothing about Dataguard integration, that could be a value added.
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Thanks,
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yes, you should be able to use the full backup taken in middle and use the rest of the log backups taken afterwards to restore the database.while I do not use TSM, we use QUEST(DELL) LITESPEED, that takes full backup once a day and log backups
every 15mins.
if someone accidentally takes full backup in the middle of day with out 'copy only',
log sequence will break and successive log backups depend on this full back up.
while this should be prevented from happening in first place, you can still restore from native full backup and then apply log backups taken from third party taken after the native Full backup.
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Hope it Helps!!
Thanks, well it was just a theory discussion we had about the issue. But none of us could find info on the internet easy to prove our point :) Thanks.

STARTING STANDBY IN DATAGUARD CONFIGURATION

Hi,
IN DATAGUARD CONFIGURATION, should we start STANDBY database by :
1-STARTUP MOUNT
or
2-STARTUP
or
3-STARTUP MOUNT
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE DISCONNECT;
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Thank you sybrandb.
Please always include your version (four digits) and the O/SPROD 10.2.0. on WIN 2003 SERVER
STANDBY 10.2.0. on WIN XP PRO.
The correct procedure is (documented)Thank to give the name or number or URL of document. I have already seen :
Oracle® Data Guard
Concepts and Administration
10g Release 2 (10.2)
B14239-04
note 374069.1
note 248382.1
Regards

Multiple Standby Dataguard Configuration

Hi,
Sorry if this has been posted before, but I could not find the answer.
I have a Primary site (PRIM) and one Standby site(STBY1). The standby receives archive log changes from the primary. Also using dataguard to manage the Standby.
I would like to create another standby (STBY2) and use the current standby (STBY1) to send changes to the other standby (STBY2).
I've read the section on Cascade Redo Log Destinations in Section D of the Dataguard doc, but it really doesnt show how this is configured.
I assume that my standby (STBY1) would need a the log_archive_dest_2 set to the service that points to the second standby (STBY2).
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Thanks,
Roland

I'm curious, is there a reason that you wouldn't want PRIM to supply the changes to both STBY1 and STBY2? In the configuration you're describing, if there was a failure on STBY1, you couldn't fail over from PRIM to STBY2...
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

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os is WINDOWS-2000
kk

Hi Ogan,
Can i do the following steps to break primary and standby.
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SQL> alter system set log_archive_dest_state_2=defer scope=both;
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Hello,
I need some information if anyone has experience in the following
We have severel database running in DataGuard standby configuration.
I want to install OMS 11.1 and use the repository in a primary and standby configuration.
My configuration will look like this:
host 1     Primary Repository database
     OMS service 1
host 2     Standby Repository database
     OMS service 2
During normal operation i want to have 2 OMS services running.
Whenever a failover is necessary, i want to active my standby database and run OMS service 2.
Can this be a working configuration?
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Hi.
As far as I know, the dbconsole installed with the Oracle database applies for only one database on one server. The information accessed by the dbconsole relies within the sysman schema inside the actual database. For a database environment with 10 databases, it is possible to install grid control and manage all these databases despite version and OS. And I think that grid is a good solution to such an environment.
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Good luck.
rgds
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Hello,
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Alain

Perhaps you could find the answers you seek in the fine Oracle® Data Guard Concepts and Administration guide.
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RDBMS:oracle 10g
OS: Windows 2003 server
I have one db server and one standby server.I want to user Dataguard for centralized monitoring.I have another(3rd server) for DataGuard .When I make configuration It connects to server and make configuration successfully.
In this scenario configuration exist on Server (main DB) with which I connect.I want to store configuration on my third server,so that in case of failure I may use it.
How can I configure my third server to store configurations for my Db server and standby server?

If I understand your question, and I may not, the third server is meaningless ... there is no configuration to store anywhere beyond using good backup practices and RMAN.
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Dataguard Configuration under Juniper Firewall

Dear Friends ,
We are using Oracle database 11g with Oracle Ent Linux 5.8. We are using active dataguard in this system . Recently we are deployed firewall both on PRIMARY and STANDBY end . we are using juniper firewall device . After deployment of Juniper Firewall on STANDBY end , we observe that Dataguard replication is not performed , i mean log of the PRIMARY server does not transmitted to the STANDBY end .
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How can I resolve this Dataguard replication problem under the Firewall ?

The firewall simply placed on top of STANDBY database . nothing is configured in firewall . I mean all ports are open and no rules are applied yet .
Before firewall , redo transmitted successfully but after placing the firewall , it is not working .
It means you agree the firewall is blocking the transmission and it also means that ports are blocked.
On top of what have been said -
Check the connectivity to Standby from Primary as SYSDBA ?
Check the Primary database & Standby database alert log ?
Pradeep

SAN based restoration or RMAN restoration for Dataguard configuration

Hi ,
We have oracle 11gr2 on aix OS ,I am planning to configure active dataguard for DB size 250 GB.
FOr DB restoration on standby side if i go for SAN based OS block level Relication between primary and standby how to link DB LUn on standby which are mounted with diffrent LUN name on standby DB.
OR RMAN restoartion is only method to go for standby DB restoartion ..
My conncerns is if i go for RMAN than it will take more than 8 hours and it will affect my DB performance ..
Please help me suggest which approch is better ? If it SAN based than how to link LUn to DB file .
Thanks in Advance.

Hello;
I don't see "global_dbname" in your example.
Yours
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(ORACLE_HOME = /u01/app/oracle/product/OraHome111)
(SID_NAME = Test2)
LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = <auxiliary host>)(PORT = 1521))
Mine
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /u01/app/oracle/product/11.2.0.3)
(PROGRAM = extproc)
(SID_DESC =
(global_dbname = STANDBY_DGMGRL.myhost.com)
(ORACLE_HOME = /u01/app/oracle/product/11.2.0.3)
(sid_name = STANDBY)
ADR_BASE_LISTENER = /u01/app/oracle
INBOUND_CONNECT_TIMEOUT_LISTENER=120
Best Regards
mseberg

Oracle Streams - Dataguard Configuration

Dataguard<------Streams<----Production------> Dataguard
I'm planning to implement a 4-way System where My Production Database with its own Physical Standby will be streaming(Streams database) to A reporting Database with its own Physical Standby.So,Effectively My production database,Especially it's redo logs will be put under severe load.I would like get some light on the feasibility of such a Setup.What parameters can i Take care of so as to make it a profitable High Availability-High Preformance System?
Any suggestions and advice will be highly appreciated..

Remember that Streams check the source DB name of the LCR. Thus the db_name of each standby must be the same as the of the open DB of the remote DB will reject the LCR of the standby when it is activated.
Also streams, dataguard and crash don't fit so well in respect of streams consistency. At the crach time, some transaction will be lost that would have already been sent by streams, since streams react beneath the second. Thus when you activate the dataguard with its loss of some data, you are going to miss some source transaction, that would have already been replicated. You may end with errors on target site, either being dup val on transaction or OLD value in target do not match new value in LCR.
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LOG_ARCHIVE_DEST_2='SERVICE=boston LGWR ASYNC'
http://download.oracle.com/docs/cd/B19306_01/server.102/b14239/log_transport.htm#i1265762
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Dataguard configured using RMAN not in sync with Primary

Hi All.
I have configured physical standby using RMAN it has errored out as below message since the Physical standby is came in Mount state and it is not in sync with Primary.
$ rman target sys/oracle1@PROD_st_STBY auxiliary /
Recovery Manager: Release 11.2.0.1.0 - Production on Sun Jul 29 13:27:02 2012
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
connected to target database: PROD_ST (DBID=609107922)
connected to auxiliary database: PROD_ST (not mounted)
RMAN> duplicate target database for standby dorecover;
Starting Duplicate Db at 29-JUL-12
using target database control file instead of recovery catalog
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=156 device type=DISK
contents of Memory Script:
set until scn 239665;
restore clone standby controlfile;
executing Memory Script
executing command: SET until clause
Starting restore at 29-JUL-12
using channel ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: restoring control file
channel ORA_AUX_DISK_1: reading from backup piece /oracle1/oraerp/PROD_st/rman/07ngg1p6_1_1
channel ORA_AUX_DISK_1: piece handle=/oracle1/oraerp/PROD_st/rman/07ngg1p6_1_1 tag=TAG20120719T140110
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01
output file name=/oracle1/oraerp/PROD_st/cont_.ctl
Finished restore at 29-JUL-12
contents of Memory Script:
sql clone 'alter database mount standby database';
executing Memory Script
sql statement: alter database mount standby database
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of Duplicate Db command at 07/29/2012 13:27:29
RMAN-05501: aborting duplication of target database
RMAN-05001: auxiliary file name /oracle1/oraerp/PROD_st/undotbs1.dbf conflicts with a file used by the target database
RMAN-05001: auxiliary file name /oracle1/oraerp/PROD_st/sysaux.dbf conflicts with a file used by the target database
RMAN-05001: auxiliary file name /oracle1/oraerp/PROD_st/system01.dbf conflicts with a file used by the target database
RMAN>
SQL> select name,open_mode from v$database;
NAME OPEN_MODE
PROD_ST MOUNTED
SQL> select name,db_unique_name,database_role from v$database;
NAME DB_UNIQUE_NAME DATABASE_ROLE
PROD_ST PROD_st_STBY PHYSICAL STANDBY
SQL>
SQL> alter database recover managed standby database disconnect;
Database altered.
SQL>
SQL> alter system set log_archive_dest_state_2=enable;
System altered.
SQL> sho parameter log_archive_dest_2
NAME TYPE VALUE
log_archive_dest_2 string LOCATION=/oracle1/oraerp/PROD_
st/arch/ VALID_FOR=(ALL_LOGFIL
ES,ALL_ROLES)
On Primary
==========
SQL> SELECT THREAD# "Thread",SEQUENCE# "Last Sequence Generated"
FROM V$ARCHIVED_LOG
WHERE (THREAD#,FIRST_TIME ) IN (SELECT THREAD#,MAX(FIRST_TIME) FROM V$ARCHIVED_LOG GROUP BY THREAD#)
ORDER BY 1; 2 3 4
Thread Last Sequence Generated
1 281
ON STANDBY
SQL> SELECT ARCH.THREAD# "Thread", ARCH.SEQUENCE# "Last Sequence Received", APPL.SEQUENCE# "Last Sequence Applied", (ARCH.SEQUENCE# - APPL.SEQUENCE#) "Difference"
2 FROM
3 (SELECT THREAD# ,SEQUENCE# FROM V$ARCHIVED_LOG WHERE (THREAD#,FIRST_TIME ) IN (SELECT THREAD#,MAX(FIRST_TIME) FROM V$ARCHIVED_LOG GROUP BY THREAD#)) ARCH,
4 (SELECT THREAD# ,SEQUENCE# FROM V$LOG_HISTORY WHERE (THREAD#,FIRST_TIME ) IN (SELECT THREAD#,MAX(FIRST_TIME) FROM V$LOG_HISTORY GROUP BY THREAD#)) APPL
5 WHERE
6 ARCH.THREAD# = APPL.THREAD#
ORDER BY 1; 7
no rows selected
SQL>
SQL> SELECT THREAD#, LOW_SEQUENCE#, HIGH_SEQUENCE# FROM V$ARCHIVE_GAP;
no rows selected
SQL>
Please suggest solution.
Best Regards,
Edited by: user13707876 on 19-Jul-2012 02:04

Hi,
It has worked now since error with warnings encountered as below:
$ rman target sys/oracle1@PROD_st_STBY auxiliary /
Recovery Manager: Release 11.2.0.1.0 - Production on Sun Jul 29 15:57:39 2012
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
connected to target database: PROD_ST (DBID=609107922)
connected to auxiliary database: PROD_ST (not mounted)
RMAN> duplicate target database for standby nofilenamecheck;
Starting Duplicate Db at 29-JUL-12
using target database control file instead of recovery catalog
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=156 device type=DISK
contents of Memory Script:
restore clone standby controlfile;
executing Memory Script
Starting restore at 29-JUL-12
using channel ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: restoring control file
channel ORA_AUX_DISK_1: reading from backup piece /oracle1/oraerp/PROD_st/rman/0enggc17_1_1
channel ORA_AUX_DISK_1: piece handle=/oracle1/oraerp/PROD_st/rman/0enggc17_1_1 tag=TAG20120719T165607
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01
output file name=/oracle1/oraerp/PROD_st/cont_.ctl
Finished restore at 29-JUL-12
contents of Memory Script:
sql clone 'alter database mount standby database';
executing Memory Script
sql statement: alter database mount standby database
contents of Memory Script:
set newname for tempfile 1 to
"/oracle1/oraerp/PROD_st/temp01.dbf";
switch clone tempfile all;
set newname for datafile 1 to
"/oracle1/oraerp/PROD_st/system01.dbf";
set newname for datafile 2 to
"/oracle1/oraerp/PROD_st/sysaux.dbf";
set newname for datafile 3 to
"/oracle1/oraerp/PROD_st/undotbs1.dbf";
set newname for datafile 4 to
"/oracle1/oraerp/PROD_st/users01.dbf";
restore
clone database
executing Memory Script
executing command: SET NEWNAME
renamed tempfile 1 to /oracle1/oraerp/PROD_st/temp01.dbf in control file
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
executing command: SET NEWNAME
Starting restore at 29-JUL-12
using channel ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00001 to /oracle1/oraerp/PROD_st/system01.dbf
channel ORA_AUX_DISK_1: restoring datafile 00004 to /oracle1/oraerp/PROD_st/users01.dbf
channel ORA_AUX_DISK_1: reading from backup piece /oracle1/oraerp/PROD_st/rman/09nggc0j_1_1
channel ORA_AUX_DISK_1: piece handle=/oracle1/oraerp/PROD_st/rman/09nggc0j_1_1 tag=TAG20120719T165547
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:03
channel ORA_AUX_DISK_1: starting datafile backup set restore
channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_AUX_DISK_1: restoring datafile 00002 to /oracle1/oraerp/PROD_st/sysaux.dbf
channel ORA_AUX_DISK_1: restoring datafile 00003 to /oracle1/oraerp/PROD_st/undotbs1.dbf
channel ORA_AUX_DISK_1: reading from backup piece /oracle1/oraerp/PROD_st/rman/08nggc0j_1_1
channel ORA_AUX_DISK_1: piece handle=/oracle1/oraerp/PROD_st/rman/08nggc0j_1_1 tag=TAG20120719T165547
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:03
Finished restore at 29-JUL-12
contents of Memory Script:
switch clone datafile all;
executing Memory Script
datafile 1 switched to datafile copy
input datafile copy RECID=1 STAMP=789926299 file name=/oracle1/oraerp/PROD_st/system01.dbf
datafile 2 switched to datafile copy
input datafile copy RECID=2 STAMP=789926299 file name=/oracle1/oraerp/PROD_st/sysaux.dbf
datafile 3 switched to datafile copy
input datafile copy RECID=3 STAMP=789926299 file name=/oracle1/oraerp/PROD_st/undotbs1.dbf
datafile 4 switched to datafile copy
input datafile copy RECID=4 STAMP=789926299 file name=/oracle1/oraerp/PROD_st/users01.dbf
ORACLE error from auxiliary database: ORA-19527: physical standby redo log must be renamed
ORA-00312: online log 1 thread 1: '/oracle1/oraerp/PROD_st/redo.log'
RMAN-05535: WARNING: All redo log files were not defined properly.
ORACLE error from auxiliary database: ORA-19527: physical standby redo log must be renamed
ORA-00312: online log 2 thread 1: '/oracle1/oraerp/PROD_st/redo_2.log'
RMAN-05535: WARNING: All redo log files were not defined properly.
ORACLE error from auxiliary database: ORA-19527: physical standby redo log must be renamed
ORA-00312: online log 5 thread 0: '/oracle1/oraerp/PROD_st/log5.log'
RMAN-05535: WARNING: All redo log files were not defined properly.
ORACLE error from auxiliary database: ORA-19527: physical standby redo log must be renamed
ORA-00312: online log 6 thread 0: '/oracle1/oraerp/PROD_st/log6.log'
RMAN-05535: WARNING: All redo log files were not defined properly.
Finished Duplicate Db at 29-JUL-12
RMAN>
So please suggest can i rename them all redolog file.
Best Regards,

In my standby dataguard configuration

Hi All,
I observed one strange thing in my database is that my archives are getting shipped regularly to DR site but in night time only it starts to getting applied. Some time, it starts to apply but its very slow. I confirmed with network team and they said that there is no problem in connectivity.
Could anyone tell me about this please ?
My email # [email protected]
Regards,
Star Nirav
+91 9227258878

I'm curious, is there a reason that you wouldn't want PRIM to supply the changes to both STBY1 and STBY2? In the configuration you're describing, if there was a failure on STBY1, you couldn't fail over from PRIM to STBY2...
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

SDU Dataguard configuration

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