Need document to configure dataguard maximum protection...

Hi,
1) I need a Oracle Document to configure the dataguard using maximum protection mode.
2) Is it mandatory to have 2 standby setup ?

which version?
>
1) I need a Oracle Document to configure the dataguard using maximum protection mode.
>
check documentation on tahiti.oracle.com
http://download.oracle.com/docs/cd/E11882_01/server.112/e17022/protection.htm#CHDEDGIF
>
2) Is it mandatory to have 2 standby setup ?
>
depends on your requirements. only you can answer this question.
hth

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Dataguard: RESYNCHRONIZATION state for MAXIMUM PROTECTION mode

Dear All
Hi
When you have Data guard in 10g Rel 2 and your primary database protection mode is configured as MAXIMUM PROTECTION , when the standby database goes down , the PROTECTION_LEVEL in primary database changes to RESYNCHRONIZATION before the primary database shuts down .
SQL> select protection_level from v$database;
PROTECTION_LEVEL
RESYNCHRONIZATION
I need to know for how long primary database can stay in RESYNCHRONIZATION level before it goes down ? and how we can change this time ???
Thanks
Edited by: kamranbs on Jul 19, 2011 2:13 PM
Edited by: kamranbs on Jul 19, 2011 3:09 PM

Something not quite right, unless you have extremely slow disks or the OS is slacking (using VM?) . As soon a the net_timeout expires, primary initiates shutdown abort which should be instant.

How to configure Dataguard

Sir,
Can anyone help me by sending documents to configure dataguard like step by step configuration?
regards
Mathew

Sir,
We configured dataguard(Oracle9i, WIndows 2000 server). I have one doubt.
How can we make Standy Server as Primary when Standby database fails
without DBA executing commands?
eg: Put all commands in on script file(eg: std.sql) and call from Batch file.
But how to set/schedule this file?
regards
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Configuring maximum protection mode in dataguard with oracle 10g

Dear All,
I am facing a big problem in my configuration for oracle dataguard in maximum protection mode. as per oracle documentation i have done the following.
on the primary database i configured the floowing parameter.
LOG_ARCHIVE_DEST_2='SERVICE=CDER LGWR SYNC AFFIRM
VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE)
DB_UNIQUE_NAME=CDER'
on the standby i configured the following parameters.
LOG_ARCHIVE_DEST_2='SERVICE=REDC LGWR SYNC AFFIRM
VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE)
DB_UNIQUE_NAME=REDC'
i created standby redo logs on the standby database as per documentation.
I shut down the primary database and started it in mount stage and i executed the following commands.
SQL> ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE PROTECTION
after database was sucessfully alterd, i execute it the following command to open the database.
SQL > ALTER DATABASE OPEN;
what is happening is that i am recieving the Error end of communication channel and also after i look at the log file the following error is in place
Thu Jul 22 23:33:37 2010
Errors in file c:\oracle\product\10.2.0\admin\redc\bdump\redc_psp0_1088.trc:
ORA-16072: a minimum of one standby database destination is required
though when i reset the dataguard to maximize performance it work really successful and the database open;
please guys guide me through this

you got it
redc.__db_cache_size=1056964608
redc.__java_pool_size=16777216
redc.__large_pool_size=16777216
redc.__shared_pool_size=318767104
redc.__streams_pool_size=0
*.audit_file_dest='C:\oracle\product\10.2.0\admin\REDC\adump'
*.background_dump_dest='C:\oracle\product\10.2.0\admin\REDC\bdump'
*.compatible='10.2.0.3.0'
*.control_files='C:\oracle\product\10.2.0\oradata\REDC\control01.ctl','C:\oracle\product\10.2.0\oradata\REDC\control02.ctl','C:\oracle\product\10.2.0\oradata\REDC\control03.ctl'
*.core_dump_dest='C:\oracle\product\10.2.0\admin\REDC\cdump'
*.db_block_size=8192
*.db_domain=''
*.db_file_multiblock_read_count=8
*.DB_FILE_NAME_CONVERT='C:\oracle\product\10.2.0\oradata\CDER','C:\oracle\product\10.2.0\oradata\REDC','D:\oracle\oradata\CDER','D:\oracle\oradata\REDC'
*.db_name='REDC'
*.DB_UNIQUE_NAME='REDC'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=REDCXDB)'
*.FAL_CLIENT='REDC'
*.FAL_SERVER='CDER'
*.job_queue_processes=10
*.LOG_ARCHIVE_CONFIG='DG_CONFIG=(REDC,CDER)'
*.LOG_ARCHIVE_DEST_1='LOCATION=D:\oracle\Archives
VALID_FOR=(ALL_LOGFILES,ALL_ROLES)
DB_UNIQUE_NAME=REDC'
*.LOG_ARCHIVE_DEST_2='SERVICE=CDER LGWR SYNC AFFIRM
VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE)
DB_UNIQUE_NAME=CDER'
*.LOG_ARCHIVE_DEST_STATE_1='ENABLE'
*.log_archive_dest_state_2='ENABLE'
*.LOG_ARCHIVE_FORMAT='%t_%s_%r.arc'
*.LOG_ARCHIVE_MAX_PROCESSES=5
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*.pga_aggregate_target=471859200
*.processes=150
*.REMOTE_LOGIN_PASSWORDFILE='EXCLUSIVE'
*.sga_target=1417674752
*.STANDBY_FILE_MANAGEMENT='AUTO'
*.undo_management='AUTO'
*.undo_tablespace='UNDOTBS1'
*.user_dump_dest='C:\oracle\product\10.2.0\admin\REDC\udump'

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Dear All
Hi
I have 9i Rel 2 (9.2.07) dataguard environment on Linux Redhat Advanced Server 3
The Pretenction mode is Maximum Protection
One day I noticed that my dataguard Database is about 100 log files before than the Primary:
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But in standby the last log that was transfered and applied was 7716
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SQL> Select protection_mode , protection_level from v$database;
the result was:
protection_mode=MAXIMUM PROTECTION
protection_level=SYNCHRONIZING
What I want to know is:
Why the primary database did not become shutdown when it is in MAXIMUM PROTECTION mode and why it has continued working when the log files could not transfer to standby database ????
Thank you in advance for your reply

Anybody any idea ??????

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HI Gurus ,
We have a dataguard environment configured in 12.1.0.2.0 on OEL 5.6. Dataguard is configured in maximum performance using following congiguration ,
18:26:26 SQL> show parameter log_archive_dest_2
NAME                                 TYPE        VALUE
log_archive_dest_2                   string      service=TGOID NOAFFIRM LGWR ASYNC COMPRESSION=ENABLE VALID_FOR=(ALL_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=TGOID
Here I used LGWR ASYNC and enabled real time apply at my standby using ,
SQl> alter database recover managed standby database using current logfile disconnect;
Here are my doubts ,
1. If we enable real time apply ,the changes will reflect at standby when a commit happens at primary. is it correct ?
But here I can't see that behavior , the changes are getting applied to standby only when I make a log switch.(as in the case of ARCH transport mode )
2. So if I wish to get the changes done at standby when a commit happens at primary, is I need to set the following ?
First ,
alter system set log_archive_dest_2=service=TGOID AFFIRM LGWR SYNC COMPRESSION=ENABLE VALID_FOR=(ALL_LOGFILES,PRIMARY_ROLE)DB_UNIQUE_NAME=TGOID scope=both;
Secondly,
ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE PROTECTION/MAXIMIZE AVAILABILITY .
is it correct ?
3. If its correct what is the advantage of using lgwr async in maximum performance ? then what is meant by real time apply in maximum performance ?
Thanks and regards,
Mahi

http://docs.oracle.com/cd/B19306_01/server.102/b14239/create_ps.htm#i1225703
Step 2   Determine the appropriate number of standby redo log file groups
(maximum number of logfiles for each thread + 1) * maximum number of threads

Primary db get error ORA-03113 in maximum protection mode

primary db pfile :
cds.__db_cache_size=230686720
cds.__java_pool_size=4194304
cds.__large_pool_size=4194304
cds.__shared_pool_size=71303168
cds.__streams_pool_size=0
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*.background_dump_dest='/opt/oracle/database/cds/bdump'
*.control_files='+data/control01.ctl','+data/control02.ctl'
*.db_name='cds'
*.db_recovery_file_dest_size=2147483648
*.db_recovery_file_dest='+data1'
*.db_unique_name='cds'
*.dg_broker_start=FALSE
*.fal_client='cds'
*.fal_server='cdssty'
*.log_archive_config='DG_CONFIG=(cds,cdssty)'
*.log_archive_dest_1='LOCATION=+data2 VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=cds'
*.log_archive_dest_2='SERVICE=cdssty LGWR SYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=cdssty'
*.log_archive_dest_state_2='ENABLE'
cds.log_archive_format='%t_%s_%r.dbf'
*.log_archive_max_processes=1
*.log_archive_min_succeed_dest=1
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*.undo_management='auto'
*.undo_tablespace='undocds01'
*.user_dump_dest='/opt/oracle/database/cds/udump'
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cdssty.__db_cache_size=213909504
cdssty.__java_pool_size=4194304
cdssty.__large_pool_size=4194304
cdssty.__shared_pool_size=88080384
cdssty.__streams_pool_size=0
*.archive_lag_target=0
*.background_dump_dest='/opt/oracle/database/cdssty/bdump'
*.control_files='+DATA01/control01.ctl','+DATA01/control02.ctl'#Restore Controlfile
*.db_file_name_convert='+data','+data01'
*.db_name='cds'
*.db_recovery_file_dest_size=2147483648
*.db_recovery_file_dest='+data02'
*.db_unique_name='cdssty'
*.dg_broker_start=FALSE
*.fal_client='CDSSTY'
*.fal_server='CDS'
*.log_archive_config='DG_CONFIG=(cdssty,cds)'
*.log_archive_dest_1='LOCATION=+data03 VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=cdssty'
*.log_archive_dest_2='SERVICE=cds LGWR SYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=cds'
cdssty.log_archive_dest_state_1='ENABLE'
cdssty.log_archive_format='%t_%s_%r.dbf'
*.log_archive_max_processes=1
*.log_archive_min_succeed_dest=1
cdssty.log_archive_trace=0
*.log_file_name_convert='+data','+data01'
*.sga_target=300m
*.standby_archive_dest='+data03'
cdssty.standby_archive_dest='+DATA03'
*.standby_file_management='AUTO'
*.undo_management='auto'
*.undo_tablespace='undocds01'
*.user_dump_dest='/opt/oracle/database/cdssty/udump'
primary database is in maximum protection mode
stanbdy db has two standby redolog file groups
llistener at both the end is up
when i try to open primary databsae i get the error blow:
ERROR at line 1:
ORA-03113: end-of-file on communication channel
i read the alert log and its log are as blow:
Database mounted in Exclusive Mode
Completed: ALTER DATABASE MOUNT
Wed Nov 7 04:28:00 2012
alter database open
Wed Nov 7 04:28:01 2012
LGWR: STARTING ARCH PROCESSES
ARC0: Archival started
LGWR: STARTING ARCH PROCESSES COMPLETE
ARC0 started with pid=16, OS id=13841
Wed Nov 7 04:28:01 2012
LGWR: Primary database is in MAXIMUM PROTECTION mode
LGWR: Destination LOG_ARCHIVE_DEST_1 is not serviced by LGWR
LGWR: Minimum of 1 synchronous standby database required
Wed Nov 7 04:28:01 2012
Errors in file /opt/oracle/database/cds/bdump/cds_lgwr_13720.trc:
ORA-16072: a minimum of one standby database destination is required
Wed Nov 7 04:28:01 2012
Errors in file /opt/oracle/database/cds/bdump/cds_lgwr_13720.trc:
ORA-16072: a minimum of one standby database destination is required
LGWR: terminating instance due to error 16072
Instance terminated by LGWR, pid = 13720
and the contents of /opt/oracle/database/cds/bdump/cds_lgwr_13720.trc are:
/opt/oracle/database/cds/bdump/cds_lgwr_13720.trc
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
ORACLE_HOME = /opt/oracle/product
System name: Linux
Node name: Host1
Release: 2.6.18-128.el5
Version: #1 SMP Wed Dec 17 11:42:39 EST 2008
Machine: i686
Instance name: cds
Redo thread mounted by this instance: 1
Oracle process number: 6
Unix process pid: 13720, image: oracle@Host1 (LGWR)
*** 2012-11-07 04:28:01.123
*** SERVICE NAME:() 2012-11-07 04:28:01.122
*** SESSION ID:(45.1) 2012-11-07 04:28:01.122
Destination LOG_ARCHIVE_DEST_1 is not serviced by LGWR
Standby database verification failed:16072
ORA-16072: a minimum of one standby database destination is required
error 16072 detected in background process
ORA-16072: a minimum of one standby database destination is required
if i open primary db in maximum availability mode its working fine ..
the problme is only with maximum protection mode
plz tell me what is wrong with my configuration

hi thanx again,
i read both the oracle links u suggest me in your previous post ,but i have not found any thing like,min 2 standby database require for maximum protection mode,
in first link :-
5.6.1.1 Maximum Protection Mode
This protection mode ensures that no data loss will occur if the primary database fails. To provide this level of protection, the redo data needed to recover each transaction must be written to both the local online redo log and to the standby redo log on at least one standby database before the transaction commits_. To ensure data loss cannot occur, the primary database shuts down if a fault prevents it from writing its redo stream to at least one remote standby redo log. For multiple-instance RAC databases, Data Guard shuts down the primary database if it is unable to write the redo records to at least one properly configured database instance. The maximum protection mode requires that at least one standby instance has a standby redo log and the LGWR, SYNC, andAFFIRM attributes be used on the LOG_ARCHIVE_DEST_n parameter for this destination.
and second link:-
Maximum protection This protection mode ensures that no data loss will occur if the primary database fails. To provide this level of protection, the redo data needed to recover each transaction must be written to both the local online redo log and to the standby redo log on at least one standby database before the transaction commits_. To ensure data loss cannot occur, the primary database shuts down if a fault prevents it from writing its redo stream to the standby redo log of at least one transactionally consistent standby database.
Plz correct me if i m wrong
thanx in advance

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Database shutdowns in Maximum Protection mode

Hi,
I am using oracle dataguard 11g(11.2.0.1.0) on OEL5. My dataguard is working fine in MAXIMUM PERFORMANCE mode. But when i try to put my database mode in MAXIMUM PROTECTION MODE my database gets shutdown.What could be the possible reason for this????
Regards,
007

Hello;
Quote "To ensure that data loss cannot occur, the primary database will shut down, rather than continue processing transactions, if it cannot write its redo stream to at least one synchronized standby database"
Section - 1.4 Data Guard Protection Modes - Data Guard Concepts and Administration 11g Release 2 (11.2) E10700-02
From section 5.1 of the same document ( Maximum Protection )
"Oracle recommends that a minimum of two standby databases be used to
protect a primary database that runs in maximum protection mode to prevent a single
standby database failure from causing the primary database to shut down."
Best Regards
mseberg

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For 11i version pls chk :
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Dataguard 'max protection' mode failed

Testing Dataguard in MAX PROTECTION mode on Oracle 10.2.0.4 on Solaris x86_64.
Test 1: Primary remained up allowing transactions to continue inspite of the fact that the server running the standby database was not reachable. Waited for over 10 minutes and then cancelled the test. All that happened was the protection_level changed to resynchronization. I could not believe my eyes. Is this possible?
Test 2: The primary shutdown automatically but after about 6 minutes of the standby database was shut abort. So what about all those transactions that took place during those 6 minutes? Those would be lost - isnt it?
I just cant believe this. Where am I going wrong? I confirmed that LAD_2 was set to lgwr sync affirm. And that protection mode was set to 'maximum protection'.
Somebody, pls enlighten me?
Thanks
Edited by: user12022918 on 27-May-2013 08:42

If you have several physical standby database for the same primary database then this could be expected behaviour otherwise this looks like a bug that you should report to Oracle Support who will very likely ask you to upgrade at least to 10.2.0.5 patchset or 11.2.0.3.

XI/PI: need to create configuration from backend service interface to file

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For example i have interface CreateOrderInformation_Out which is coming from abckend and i want to store those details in a file on external/desktop via XI/PI.
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Message Type (includes datatype)
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