Data Pump and Physical Standby

I want to perform a data pump export on a schema attached to a physical standby database. Is this possible and what are the steps.

Thanks for the information. I will give it a tryI just realized it might not work, because data pump need to update the data pump job information.
What's the concern not running export on primary?

Similar Messages

Data guard synchronization after link down b/w primary and physical standby

Hi All,
I have configured data guard on oracle 11gr2 db. Normally switchover between my primary and physical standby happens smoothly and the Apply lag would be zero. Recently We had to test a scenario when the network link between Primary and Physical standby is completely down and Physical standby is isolated completely for more than half an hour.
When we brought up the link every thing worked smoothly but apply lag started increasing from 0 to around 3 hrs. And then it started reducing to 0. Currently Apply lag and transport lag shows 0.
But is this normal behaviour of oracle data guard that when the link between primary and physical standby is completely down, It requires 3-4 hrs for resynchronization ??? Even when during isolation, there were very few transactions happend on primary database ??
Are there any documents available for this scenario??
Thanks

Hi, after the link is up, if there were some transactions and produced archive logs it's normal to take some time for resync. To check if 3-4 hours is normal or not, you can repeat the scenario and this time check
- how many archivelogs does primary produce in this period.
- after the link is up, does archivelog transfer immediately starts from primary to standby? Is primary able to send these archivelogs parallel?
- Is there anything wrong with the apply process?
check primary & standby alert log files, and run this query on standby to check the transport and apply processes:
SELECT PROCESS, STATUS, THREAD#, SEQUENCE#, BLOCK#, BLOCKS FROM V$MANAGED_STANDBY;
regards

Logical and Physical Standby on same Node

Is it possible to have a logical and physical standby database for a primary database on the same node (i.e. primary on NodeA, logical and physical database of primary on NodeB)?
Will there be any conflicts with data guard broker with this configuration or any problems I may encounter?

From a technical point of view this is possible. Your standby node should be powerful enough to handle 2 instances. For even higher availability 3 dedicated nodes would be better. When Node B is down, both physical and logical standby are also down.
Werner

Reg: Exporting the data from the Physical Standby database system.

Hello all,
We have an oracle standard edition one 11gR1 environment, in which i need to export the data from the physical standby system.
So can anyone suggest me, How to do it safely (mount state).
Regards,
Konda.

Hi,
You can use "exp" utility to export the database from a read only database whereas you can't export the read only database using "expdp".
Since you are using version 11g, it is not advisable to use exp. You can convert your standby to snapshot database, open read, write and export the database using expdp and then again convert it to standby.
This is a very easy process which we follow in our company to do testing when required.
Follow note 11g Using Snapshot Standby Database. (Doc ID 443720.1) for converting and usage.
Thank you!!

Time zone difference between primary and physical standby

Dear Team,
We have Primary database server (with EST Time zone) and physical standby (with PST time zone), in case of switch over/fail over to physical standby
what are the major impacts.
Is it mandatory to be in time sync?
Thanks in advance
Aj

CURRENT_TIMESTAMP
04-FEB-10 10.22.20.444692 AM +05:30
( above is same on primary and standby)
SQL> select systimestamp from dual;
SYSTIMESTAMP
03-FEB-10 08.52.46.934125 PM -08:00
(above is 3hr diff from primary and standby)It is 13hrs difference
One is around Indian subcontinent and other should be in US western region ?
Systimestamp is the timestamp of the OS of the server and hence the difference and the sysdate value will be from systimestamp and if the applications uses SYSDATE then there can be an issue...

Data Guard Archive Log Latency Between Primary and Physical Standby

How can I get the time it takes (latency) for the primary instance to get an archive log over to the physical standby instance and get it "archived" and "applied". I have been looking at the V$ARCHIVED_LOG view on each side but the COLUMN "COMPLETION_TIME" always shows a date "MM/DD/YY" and no timestamp. I thought the DATE datatype include data and time. Any ideas on how I can get the latency info I'm looking for?
Thanks
Steve

the COLUMN "COMPLETION_TIME" always shows a date "MM/DD/YY"
and no timestamp. Did you try using TO_CHAR ? e.g.
to_char(completion_time,'dd/mm/yyyy hh24:mi:ss')

Configuring both logical and physical standby databases.

Hi,
I am trying to set up one primary and two standby databases which are physical and logical. together. What I am wondering is if i tis posiible to set both log_archive_dest_n parameters in init.ora of primary db to 'LGWR ASYNC'.. I tried to do that but I noticed that while redo data goes the first remote log destination including LGWR statement properly but for the second it does not.
So my assumption is only one remote archive dest. can be set for the LGWR process. Is ıt right?
Regards
ALPER ONEY
email:[email protected]

Hi,
when I set remote archive dest _n parameter for logical standby database to the value like 'LGWR AYSNC' and for the phy. standby to 'ARCH', it is ok. But if I change both parameters to 'LGWR'. I can see that only one destination receives the redo data and this destination is also the first destination configured for receiving redodata . I am just wondering that LGWR process is able to serve two or more to destinations at the same time. If it is ok, I am wrong and I better to try harder to solve the problem. I read the Dataguard document for 10GR' and the example for the case I created (two standby databases),, it uses ARCH process to send redo data and so everything is ok in that example.
P.S I also configured standbys for real time apply.
Waiting for your comments.
Regards.
ALPER ONEY

Logical and Physical Standby Practice

Hello Gurus
I am now attempting to practice Oracle Data Guard and in this direction I understand since 10g we have logical standby server as well as a physical standby server. While I am gathering information and knowledge about the data guard as is and varisous modes and types possible with oracle 10g and 11g in specific, an attempt to upgrade my self and learn these set-ups and understand them in detail.. I come to you for some guidence..
I am referring to Oracle Documentation for these details. At the same time I also approach you to share your experiences .. may be a link apart from the documentation of oracle which you might want to refer me to use as a quick reference.. some thing that a person like me .. fairly new to this set-up understand it and then attempt to come up with one..
This is for my practise and learning purpose.
Sarat.

Logical Standby was already introduced in 9i. It differs from physical standby in the way, the redo protocol, transmitted from the primary, gets used to actualize the standby. With logical standby, you have SQL APPLY - basically, we try to generate the same SQL that was done on the primary from the redo protocol that was written on behalf of that SQL on the primary. That SQL then is done on the OPEN instance at the logical standby.
In case of a physical standby, the redo protocol from the primary is used to do RECOVERY - called REDO APPLY - to actualize the standby.
Since 10g, the sames protection levels can be achieved with logical or physical standby.
Drawback of logical standby: Not all kinds of SQL and all datatypes are supported
Drawback of physical standby: It is mounted (versions before 11g) while being recoverd - or in 11g, REDO APPLY in READ ONLY status is possible but comes with an extra charge (ACTIVE DATA GUARD feature).
If you look on my Blog, I have some examples about creating physical & logical standby DBs
Kind regards
Uwe
http://uhesse.wordpress.com

Primary and Physical Standby databases hanging on sqlplus shell command...

I am primarily a java developer that has had the task of oracle dba thrust upon me due to circumstances that are beyond my control. In the QA lab we have two oracle 10 g release 1 instances running. They set up in a dataguard configuration: one is the primary and the other is in a physical standby.
Last week I noticed that the disk space on the primary database was at 100%. After some investigation I discovered that a good deal of the files taking up space on the box were log files and the best solution that I could think of would be to delete all old archive files. So I deleted the old archive files that were at least two weeks old using RMAN.
During this week the database started to shutdown automatically. The QA associate restarted the database twice using the ‘STARTUP’ command from sqlplus. Additionally, the standby database began to have issues: when login in to sqlplus the application would just hang: no ‘SQL” prompt or anything. Finally today the primary database has also begun to hang in a similar manner.
I have looked at many of the trace files and alert logs but haven’t been able to really discern what the real problem is with the database and the proper rectification for the database. Does anyone have a clue into what is going on? If someone could even point me in the right direction it would be greatly appreciated.

Guessing that your flash recovery area is full, archiving is stopped so the instance appears to hang.
Do you see messages like so in the alert log:
You have following choices to free up space from flash recovery area:
1. Consider changing RMAN RETENTION POLICY. If you are using Data Guard,
   then consider changing RMAN ARCHIVELOG DELETION POLICY.
2. Back up files to tertiary device such as tape using RMAN
   BACKUP RECOVERY AREA command.
3. Add disk space and increase db_recovery_file_dest_size parameter to
   reflect the new space.
4. Delete unnecessary files using RMAN DELETE command. If an operating
   system command was used to delete files, then use RMAN CROSSCHECK and
   DELETE EXPIRED commands.
************************************************************************

Primary database is RAC and Physical standby is single instance

Hello All,
I am using Oracle RAC 11.2.0.3 as primary database, we are going to start using Oracle data guard.
So I am designing my infrastructure and planing to use Oracle 11.2.0.3 Single instance as my physical stand by database.
My question is it feasible to have my standby database as single instance while the primary is RAC?
is it feasible to build my Oracle single instance standby database from the RMAN backup of the RAC primary database?
Is there any restrictions (or any points to be taken into consideration) since my primary database is RAC while the physical standby is Oracle single instance?
in the below link
[http://docs.oracle.com/cd/B28359_01/server.111/b28294/concepts.htm#i1039416]
it was mentioned that primary can be RAC or single and same for standby, but my question is it feasible to have primary as RAC while standby as single instance? or it should be like each others?
The primary database can be either a single-instance Oracle database or an Oracle Real Application Clusters (RAC) database.
Similar to a primary database, a standby database can be either a single-instance Oracle database or an Oracle RAC database.Regards,

My question is it feasible to have my standby database as single instance while the primary is RAC?Yes...quite a common setup.
is it feasible to build my Oracle single instance standby database from the RMAN backup of the RAC primary database?Yes.
Is there any restrictions (or any points to be taken into consideration) since my primary database is RAC while the physical standby is Oracle single instance?No show stoppers.

ARCHIVELOG deletion on primary and physical standby

Hi,
We have a primary and a physical standby database running Oracle 11.1.0.7.0 software on Red Hat Enterprise Linux x-64 bit OS. I will be using backup software
to only backup the primary database and do not have the backup software for the standby server and database.
We need to backup archived redo log files from primary site and delete the ones which are more than one month old. These archived redo log files will be applied from primary to standby database as and when the log switch occurs.
Can anybody please let me know if the following steps can be used:
Details are:
primary database name - sun (machine name is node1)
standby database name - drsun (machine name is node2)
On node1 as oracle user:
$ cat /export/home/oracle/rman/scripts/cleanup_rman_arch_sun.sh
#!/bin/sh
ORACLE_SID=sun; export ORACLE_SID
ORACLE_HOME=/u01/app/oracle/product/11.1.0/db_1; export ORACLE_HOME
PATH=$ORACLE_HOME/bin; export PATH
$ORACLE_HOME/bin/rman target sys/oracle@sun nocatalog log=/export/home/oracle/rman/log/cleanup_rman_arch_sun.log
@/export/home/oracle/rman/scripts/cleanup_rman_arch_sun.rcv
exit
$ cat /export/home/oracle/rman/scripts/cleanup_rman_arch_sun.rcv
allocate channel for delete type disk;
crosscheck archivelog all;
sql "alter system switch logfile";
delete noprompt expired archivelog all;
change archivelog until time 'SYSDATE-1' delete;
release channel;
$ crontab -l
# Delete the archived redo log files at 11:00 PM on the first day of every month
00 23 1 * * /export/home/oracle/rman/scripts/cleanup_rman_arch_sun.sh
On node2 as oracle user:
$ cat /export/home/oracle/rman/scripts/cleanup_rman_arch_drsun.sh
#!/bin/sh
ORACLE_SID=drsun; export ORACLE_SID
ORACLE_HOME=/u01/app/oracle/product/11.1.0/db_1; export ORACLE_HOME
PATH=$ORACLE_HOME/bin; export PATH
$ORACLE_HOME/bin/rman target sys/oracle@drsun nocatalog log=/export/home/oracle/rman/log/cleanup_rman_arch_drsun.log
@/export/home/oracle/rman/scripts/cleanup_rman_arch_drsun.rcv
exit
$ cat /export/home/oracle/rman/scripts/cleanup_rman_arch_drsun.rcv
allocate channel for delete type disk;
crosscheck archivelog all;
sql "alter system switch logfile";
delete noprompt expired archivelog all;
change archivelog until time 'SYSDATE-1' delete;
release channel;
$ crontab -l
# Delete the archived redo log files at 11:00 PM on the first day of every month
00 23 1 * * /export/home/oracle/rman/scripts/cleanup_rman_arch_drsun.sh
Regards

Hello;
Welcome to the forums. ( By physical Standby I assume Data Guard )
The short answer is it should work. I noticed this :
/cleanup_rman_arch_drsun.rcv
crosscheck archivelog all;
sql "alter system switch logfile";
delete noprompt expired archivelog all;
change archivelog until time 'SYSDATE-1' delete;I see no reason for the "alter system switch logfile". In fact you can do something very simple on the Standby :
$ORACLE_HOME/bin/rman target / catalog <user>/<password>@<catalog> << EOF
delete noprompt ARCHIVELOG UNTIL TIME 'SYSDATE-1';
exit
EOFThis assumes you have doing a backup with RMAN on the Primary ( tested on 11.2.0.2 ) and have this set on the Primary :
CONFIGURE ARCHIVELOG DELETEION POLICY TO APPLIED ON ALL STANDBY;
If you are deleting Archive without using RMAN first then yes something like this ( But I would try to use RMAN and not delete using another method )
echo `date`
echo "Runnung RMAN archive crosscheck"
$ORACLE_HOME/bin/rman <<EOF
connect target /
crosscheck archivelog all;
delete noprompt expired archivelog all;
exit
EOF
echo `date`
Best Regards
mseberg
h2. Another Standby Option
/u01/app/oracle/dba_tool/bin/removestandbyarch.sql
SET echo off
SET feedback off
SET term off
SET pagesize 0
SET linesize 200
SET newpage 0
SET space 0
col name format a120
spool /u01/app/oracle/dba_tool/bin/rm_arch_standby.sh
select 'rm '||NAME from v$archived_log
where REGISTRAR='RFS'
and APPLIED='YES'
and DELETED='NO'
and COMPLETION_TIME < (SYSDATE-10);
SPOOL OFFMain shell script
/u01/app/oracle/dba_tool/bin/removestandbyarch.sh
#!/bin/bash
if [ "$1" ]
then DBNAME=$1
else
echo "basename $0 : Syntax error : use . removestandbyarch <DBNAME> "
exit 1
fi
# Set the Environmental variable for input instance ( ORACLE_SID, ORACLE_HOME path etc )
. /u01/app/oracle/dba_tool/env/${DBNAME}.env
$ORACLE_HOME/bin/sqlplus /nolog <<EOF
   connect / as sysdba
-- spool /u01/app/oracle/dba_tool/bin/rm_arch_${ORACLE_SID}.sh
   @/u01/app/oracle/dba_tool/bin/removestandbyarch.sql
   SPOOL OFF
EOF
echo `date`
# Now run the generated script
echo "Setting permissions and running script"
chmod 740 /u01/app/oracle/dba_tool/bin/rm_arch_standby.sh
. /u01/app/oracle/dba_tool/bin/rm_arch_standby.sh
# Use RMAN to update V$ARCHIVED_LOG.DELETED
echo `date`
echo "Runnung RMAN archive crosscheck"
$ORACLE_HOME/bin/rman <<EOF
connect target /
crosscheck archivelog all;
delete noprompt expired archivelog all;
exit
EOF
echo `date`Edited by: mseberg on Apr 30, 2012 8:40 AM

Primary and physical standby isue

hi guyes,
ia have created physical standby database on the same host as my primary database,i have switch some logs,my standby database was on mount stage. i recovered standby database by being disconnect from session. all the logs are transfered.
but when i tried to shutdown and restart my primar database it gives following errors:-
SQL> startup;
ORACLE instance started.
Total System Global Area 167772160 bytes
Fixed Size 1247876 bytes
Variable Size 83887484 bytes
Database Buffers 75497472 bytes
Redo Buffers 7139328 bytes
Database mounted.
ORA-01589: must use RESETLOGS or NORESETLOGS option for database open
SQL> startup;
ORACLE instance started.
Total System Global Area 167772160 bytes
Fixed Size 1247876 bytes
Variable Size 83887484 bytes
Database Buffers 75497472 bytes
Redo Buffers 7139328 bytes
Database mounted.
ORA-01589: must use RESETLOGS or NORESETLOGS option for database open
SQL> alter database open noresetlogs;
alter database open noresetlogs
ERROR at line 1:
ORA-01588: must use RESETLOGS option for database open
SQL> alter database open resetlogs;
alter database open resetlogs
ERROR at line 1:
ORA-01194: file 1 needs more recovery to be consistent
ORA-01110: data file 1: 'C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSTEM01.DBF'
and on asking 'recover database until cancel using backup controlfile'
it ask for the archive log file 35 which is not at the specified place coz no log switch occured after arch log file 34.
how come this?
i have followed complete procedure according to docs....
all 34 arch logs have been applied..
is this happen after creating standby database???
thanks and regards
VD

Vikrant,
If you have applied all the logs
select applied, count(*) from v$archived_log group by applied; -- Please make sure you have all the logs applied successfully
shutdown immediate;
startup force nomount pfile='....' or startup force nomount;
alter database mount standby database;
-- this will activate your standby database and your should be able to open it without any problem; Primary database will be up and running as well.
alter database activate standby database;
alter database set standby database to maximize performance;
alter database open;

Logica and Physical standby to the same Primary?

Hi,
I have a primary - standby setup operating in the production. i now have a requirement to configure a Logical standby to the primary server. Can I do that leaving the already existing physical standby intact?
Thanks,
Aswin.

Yes you can have both physical and logical standby from one primary. The logical standby will need to start as a second physical standby.

Upgrading the primary and physical standby database

Solaris 9
oracle 9i (9.2.0.8)
upgrade to 10g (10.2.0.3)
Hi,
I would like to know how to upgrade database in dataguard envronment.(primary and remote physical standby database)
Is rolling upgrade possible in this case?
Or any steps or Document is appreciated.
Thanks.
Message was edited by:
user539835

Read this Metalink Note:407040.1

Data Pump and Data Manipulation (DML)

Hi all,
I am wondering if there is a method to manipulate table column data as part of a Data Pump export? For example, is it possible make the following changes during DP export:
update employee
set firstname = 'some new string';
We are looking at a way where we can protect sensitve data columns. We already have a script to update column data (ie scramble text to protect personal information) but we would like to automate the changes as we export the database schema, rather than having to export, import, run DML and then export again.
Any ideas or advice would be great!
Regards,
Leigh.

Thanks Francisco!
I haven't read the entire document yet but at first glance it appears to give me what I need. Do you know if this functionality for Data Pump is available on Oracle Database versions 10.1.0.4 and 10.2.0.3 (the versions we currently use).
Regards,
Leigh.
Edited by: lelliott78 on Sep 10, 2008 9:48 PM

Data Pump and Physical Standby

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