RAC ENV IP address

Hi Friends,
Can you please assist me to clarify the below query,
Im new in oracle rac environmental setiings, My query is, I need to mention the rac db ip address in one of our front application, but my database running on 2 node rac environment , each node having two seperate ip address(10.6.56.57 and 10.6.56.58) , Which ip address i need to give for connect the DB, suppose in case if any one ip node failure how that application automatically switch to next node instance? is there any single ip address is configured for two rac nodes? your help is very much helpful for understanding the rac mechanism.
Thanks in Advance
Jath
Edited by: jath on Nov 19, 2010 3:44 PM

Hi,
What Oracle version are you running?
how does your application connect (TNS, jdbc etc.)?
You should never use your public IP.
If you are on version 11gR2 you must use your SCAN address and if you are below 11gR2 you will have to use your Virtual IP's.
Look at the following links for more info:
http://www.oracleracexpert.com/2010/01/oracle-rac-load-balancing-and-failover.html
http://www.databasejournal.com/features/oracle/article.php/10893_3666396_1/Oracle-10gR2-RAC-Load-Balancing-Features.htm
Regards

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Hi,
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Listener.ora
LISTENER2 =
(DESCRIPTION_LIST =
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SID_LIST_LISTENER2 =
(SID_LIST =
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LISTENER1 =
(DESCRIPTION_LIST =
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SID_LIST_LISTENER1 =
(SID_LIST =
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lsnrctl status <listener_name>
oracle@ DBDEV $ lsnrctl status LISTENER1
LSNRCTL for Linux: Version 10.2.0.3.0 - Production on 02-AUG-2009 20:08:03
Copyright (c) 1991, 2006, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=dbdev.website.com)(PORT=1521)))
STATUS of the LISTENER
Alias                     LISTENER1
Version                   TNSLSNR for Linux: Version 10.2.0.3.0 - Production
Start Date                29-JUL-2009 22:28:31
Uptime                    3 days 21 hr. 39 min. 32 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /u02/app/oracle/network/admin/listener.ora
Listener Log File         /u02/app/oracle/network/log/arogya1.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=dbdev.website.com)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC0)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "TESTDB" has 1 instance(s).
Instance "TESTDB", status READY, has 1 handler(s) for this service...
Service "TESTDB_XPT" has 1 instance(s).
Instance "TESTDB", status READY, has 1 handler(s) for this service...
The command completed successfully
oracle@ DBDEV$ lsnrctl status LISTENER2
LSNRCTL for Linux: Version 10.2.0.3.0 - Production on 02-AUG-2009 20:08:07
Copyright (c) 1991, 2006, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=dbdev.website.com)(PORT=1522)))
STATUS of the LISTENER
Alias                     LISTENER2
Version                   TNSLSNR for Linux: Version 10.2.0.3.0 - Production
Start Date                31-JUL-2009 02:37:10
Uptime                    2 days 17 hr. 30 min. 56 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
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Listener Log File         /u02/app/oracle/network/log/arogya2.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=dbdev.website.com)(PORT=1522)))
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Instance "TESTDB", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
ps -ef | grep tnslsnr
oracle@ DBDEV $ ps -ef | grep tnslsnr
oracle    7951     1 0 Jul29 ?        00:00:00 /u02/app/oracle/bin/tnslsnr LISTENER1 -inherit
oracle   18080     1 0 Jul31 ?        00:00:00 /u02/app/oracle/bin/tnslsnr LISTENER2 -inherit
Client message
C:\Oracle\product\10.1.0\Client_1\BIN>sqlplus system/manager@asridb1
SQL*Plus: Release 10.1.0.2.0 - Production on Mon Aug 3 09:32:18 2009
Copyright (c) 1982, 2004, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL>
SQL> Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Production
With the Partitioning, OLAP and Data Mining options
C:\Oracle\product\10.1.0\Client_1\BIN>sqlplus system/manager@asridb2
SQL*Plus: Release 10.1.0.2.0 - Production on Mon Aug 3 09:32:25 2009
Copyright (c) 1982, 2004, Oracle. All rights reserved.
ERROR:
ORA-28547: connection to server failed, probable Net8 admin error
Enter user-name:Thanks,
Aswin.

ice_cold_aswin wrote:
But shared server is not always better than a dedicated server.I did not say it was - only that if you're expecting loads of brand new connection requests to be services fast by the Listener, then shared server will be significantly faster than dedicated server.
Frequency of connections may be handled better by the use of shared server, but how about holding thousands and thousands of connections and serving all their requests by using some preemptive mechanism? Many years ago, I configured an Oracle 8i instance on my desktop PC with shared server and told the Java guys to try their worst. See how many threads they can open against my desktop PC instance versus the big HP server instance. The latter was using dedicated server and they were kind of thinking that this was somehow better than shared server. They could open less than a few hundred connections to the big server. They opened over a 1000 connections to my desktop instance.
Shared Server is and never was a poor and second choice to Dedicated Server as some seems to suggest. It is extremely capable and ideally suited when dealing with a huge number of connections.
In our application, number of connections would reach thousands during peak hours and large number of REALLY BIG queries would be fired by each of them in a small time period. I would say these BIG QUERIES can be termed as OLAP queries, while our main stream application is a OLTP system. It must be apparent to you by now, our database (non-RAC) is supporting an application that gives OLAP and OLTP queries at a very high frequency. A big query ito what? Resource footprint? Source code size of the query? Execution time of the query?
If you have 100's of OLAP type queries (complex and long running queries) hitting the server every few seconds, then your server will die. Unless you are running some seriously expensive hardware.
That aside - it is only a sensible approach to use shared server in an environment that deals with 1000's of OLTP type connections. And if there is an OLAP mix too, then configure those connections to request dedicated server connections.
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Need help on my presentation for diff type of RAC env.

Hi,
My team and I are doing up a high level presentation to C-Level Tech’s for Pro’s and Con’s for two type’s of Env’s and we are drawing blanks and thought we would ask help from the Oracle community.
Env Option #1
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Env Option #2
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If the hardware is already purchased (which seems rather backwards-- normally you figure out how you want to deploy something before you buy the hardware), is the disk already purchased? Option #2 involves twice as much disk space as option #1.
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Rac setup ip address config

Hi hussein/heliosl,
I want to practise install RAC.
One of its requirement is to have 3 pairs of IP addresses? on both nodes? I am correct with this understanding?
Thanks a lot

Hi yxes;
>
127.0.0.1 localhost.localdomain localhost
192.168.100.51 ds1-priv.orademo.org ds1-priv # ds1 private
192.168.100.52 ds2-priv.orademo.org ds2-priv # ds1 private
192.168.200.51 ds1.orademo.org ds1 # ds1 public
192.168.200.52 ds2.orademo.org ds2 # ds2 public
192.168.200.61 ds1-vip.orademo.org ds1-vip # ds1 virtual
192.168.200.62 ds2-vip.orademo.org ds2-vip # ds2 virtual
My question is....can I type any IP address here? and call it private, public, or virtual? even if they are just dummy IPs? Can I interchange these IPs?
Its better way to ask it to your System admin. Normaly in wmware installation you can give whatever you want but if you are doing in one company its better way to take feedback or support from system admin
For wmware installation step&screen check:
[Link1|http://www.oracle-base.com/articles/10g/OracleDB10gR2RACInstallationOnCentos4UsingVMware.php]
[Link2|http://onlineappsdba.com/index.php/2007/07/09/step-by-step-build-rac-part-1-install-vmware-and-linux/]
Hope it helps
Regard
Helios

Max. Concurrent # of users (SESSIONS) in RAC Env

Hello Fellows,
Assuming that you have adequite SGA, PGA, Processes parameters...and given that you have enough RAM, CPU resources..... :
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We modifed SESSIONS parameter by (Alomg with other DB/HW neceesary changes:
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Appreciate your inputs.
Cheers,
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BTW, we have CRS and RAC 10gR1 (10.1.0.4) on Soalris 5.9 nodes. SPARC 64-bit

Issues changing windows account password (RAC env) ??

Hi All,
is there any issue changing password for windows account in an Oracle RAC environment?
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Tks,
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Edited by: user816046 on Jul 15, 2010 3:14 AM

Tks, Zahid...
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Cannot start CSS on non-RAC Env.

OS: Sun SPARC Solairs 10
Oracle: 10.2.0 64bit with ASM
Installed Oracle software only and ran root.sh at the end. Oracle cannot start css and giving up... Any help would be appreciated. Thanks much!
Adding to inittab
Startup will be queued to init within 30 seconds.
Checking the status of new Oracle init process...
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ORACLE_SID=SNAP1
ORACLE_BASE=/asm
ORACLE_HOME=/asm/product/10.2.0
# $ORACLE_HOME/bin/localconfig reset $ORACLE_HOME
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Creating OCR keys for user 'root', privgrp 'root'..
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Checking the status of new Oracle init process...
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$ORACLE_HOME/bin/localconfig add
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Operation successful.
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Hi,
Can anyone please tell me how to restore database using RMAN in a Non ASM environment as my backup file with ASM RAC environment.
i was also looking for some documentation which provides clear explanation about RMAN backup and Restore in ASM and Non ASM environment.
Thanks

You can set the parameter db_file_name_convert in init.ora in you new database with [ID 47325.1]
or
you can set parameter "set newname" in your script rman. [ID 549972.1]
if you have one or two destinations of dbfiles in ASM I seggest to you set parameter db_file_name_convert in init.
example:
db_file_name_convert=('+DGDATA','/u01/oradata/');
remenber you need set log_file_name_convert to.
log_file_name_convert=('+DGREDO','/u01/redo/');
if you use "set newname" commands you need set this lines in your script rman.
set newname for datafile 1 to '/u01/oradata/system01.dbf';
set newname for datafile 2 to '/u01/oradata/undotbs01.dbf';
set newname for datafile 3 to '/u01/oradata/sysaux01.dbf';
set newname for datafile 4 to '/u01/oradata/users01.dbf';
and every datafiles you need set!
Edited by: user1107977 on 21/07/2011 13:47

Sequence generation in Oracle RAC env. (Cached, non-ordered)

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Cache size =10
Node 1 Active - Records created 1,2,3 (3 records total in table)
Node Changes - 2 is Active - Records created 11,12,13, 14 (7 records total in table)
Node Changes - 1 is Active - Records created 21, 22 (or are sequences going to be 4, 5) (9 records total in table)
Node Changes - 2 is Active - No new record added (9 records total in table)
Node Changes - 1 is Active - 2 more Records created (9 recor11s total in table) - Is it going to be 23, 24 OR or is it going to be 6,7 OR or is it going to be 31, 32 (9 records total in table)
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Also, What happens to PK numbers at:
* shutdown
* hotbackup
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How about using cached, ordered sequences to start with and change to no-order if needed for performance reasons
-D

A necessary problem solving skill in the Oracle environment is the ability to experiment. A couple of minutes constructing a simple test is better than hours of speculation:
jw1> create sequence s1;
Sequence created.
jw1> select s1.nextval from dual;
NEXTVAL
        1
jw1> /
NEXTVAL
        2
jw1> conn sys/oracle@jw2 as sysdba
Connected.
jw2> select s1.nextval from dual;
NEXTVAL
        21
jw2> select s1.nextval from dual;
NEXTVAL
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jw2> conn sys/oracle@jw1 as sysdba
Connected.
jw1> select s1.nextval from dual;
NEXTVAL
        3
jw1> select s1.nextval from dual;
NEXTVAL
        4
jw1> exit
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With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Advanced Analytics and Real Application Testing options
[oracle@berlin1 ~]$ srvctl start instance -db jw -instance jw1 -startoption force
[oracle@berlin1 ~]$ sqlplus sys/oracle@jw1 as sysdba
SQL*Plus: Release 12.1.0.1.0 Production on Sat Aug 16 10:40:40 2014
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
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With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Advanced Analytics and Real Application Testing options
jw1> select s1.nextval from dual;

How to handle o.s. upgrades in a rac env?

I just installed oracle grid 11.2.0.3 and rdbms 11.2.0.3 on redhat linux 6 fdisk. The operating system is currently running Linux 2.6.32-71.el6.x86_64 #1 SMP Wed Sep 1 01:33:01 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
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I have a couple questions.
1. how do I disable to clusteware from starting up so that they will be able to update their o.s.?
2. What needs to be done with the oracle software once the operating system has been upgraded? Do I need to relink? Not sure have not upgraded the o.s. and any of the database installations I have worked on.
Any help is greatly appreciated.
p.s. we are using custom udev rules for device persitence for our asm devices.
Thanks.

You will need to relink Oracle binaries following the OS upgrade. Pl see this MOS Doc
Is It Necessary To Relink Oracle Following OS Upgrade? [ID 444595.1]
HTH
Srini

Not able to start databse in rac env

Hi all,
I am using oracle 11g r2 on rhel5, when i am trying to start the database it is throwing the below error:
PRCR-1079 : Failed to start resource ora.dev.db
ORA-12547: TNS:lost contact
ORA-12547: TNS:lost contact
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
ORA-00845: MEMORY_TARGET not supported on this system
CRS-2674: Start of 'ora.dev.db' on 'rac1' failed
ORA-01034: ORACLE not availableResource Status
[grid@rac2 ~]$ crs_stat -t
Name           Type           Target    State     Host
ora.CRS.dg     ora....up.type ONLINE    ONLINE    rac1
ora.DATA1.dg   ora....up.type ONLINE    ONLINE    rac1
ora.FRA.dg     ora....up.type ONLINE    ONLINE    rac1
ora....ER.lsnr ora....er.type ONLINE    ONLINE    rac1
ora....R1.lsnr ora....er.type ONLINE    ONLINE    rac1
ora....N1.lsnr ora....er.type ONLINE    ONLINE    rac1
ora....N2.lsnr ora....er.type ONLINE    ONLINE    rac2
ora....N3.lsnr ora....er.type ONLINE    ONLINE    rac2
ora.asm        ora.asm.type   ONLINE    ONLINE    rac1
*ora.dev.db*     ora....se.type ONLINE    OFFLINE                Oracle is not able to find these resource
ora.eons       ora.eons.type ONLINE    ONLINE    rac1
ora.gsd        ora.gsd.type   OFFLINE   OFFLINE
ora....network ora....rk.type ONLINE    ONLINE    rac1
ora.oc4j       ora.oc4j.type OFFLINE   OFFLINE
ora.ons        ora.ons.type   ONLINE    ONLINE    rac1
ora....SM1.asm application    ONLINE    ONLINE    rac1
ora....C1.lsnr application    ONLINE    ONLINE    rac1
ora....C1.lsnr application    ONLINE    ONLINE    rac1
ora.rac1.gsd   application    OFFLINE   OFFLINE
ora.rac1.ons   application    ONLINE    ONLINE    rac1
ora.rac1.vip   ora....t1.type ONLINE    ONLINE    rac1
ora....SM2.asm application    ONLINE    ONLINE    rac2
ora....C2.lsnr application    ONLINE    ONLINE    rac2
ora....C2.lsnr application    ONLINE    ONLINE    rac2
ora.rac2.gsd   application    OFFLINE   OFFLINE
ora.rac2.ons   application    ONLINE    ONLINE    rac2
ora.rac2.vip   ora....t1.type ONLINE    ONLINE    rac2
ora....ry.acfs ora....fs.type ONLINE    ONLINE    rac1
ora.scan1.vip ora....ip.type ONLINE    ONLINE    rac1
ora.scan2.vip ora....ip.type ONLINE    ONLINE    rac2
ora.scan3.vip ora....ip.type ONLINE    ONLINE    rac2
[grid@rac2 ~]$
[grid@rac2 ~]$ crsctl check crs
CRS-4638: Oracle High Availability Services is online
CRS-4537: Cluster Ready Services is online
CRS-4529: Cluster Synchronization Services is online
CRS-4533: Event Manager is online
[grid@rac2 ~]$
[grid@rac2 ~]$ srvctl status database -d dev
Instance dev1 is not running on node rac1
Instance dev2 is not running on node rac2
[grid@rac2 ~]$ When trying to start database, it throw some error like
[grid@rac2 ~]$ srvctl start database -d dev
PRCR-1079 : Failed to start resource ora.dev.db
ORA-12547: TNS:lost contact
ORA-12547: TNS:lost contact
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
ORA-00845: MEMORY_TARGET not supported on this system
CRS-2674: Start of 'ora.dev.db' on 'rac1' failed
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
CRS-2632: There are no more servers to try to place resource 'ora.dev.db' on that would satisfy its placement policy
ORA-12547: TNS:lost contact
ORA-12547: TNS:lost contact
CRS-2674: Start of 'ora.dev.db' on 'rac2' failed
ORA-12547: TNS:lost contact
ORA-12547: TNS:lost contact
ORA-12547: TNS:lost contact
[grid@rac2 ~]$ Can anybody suggest me how to resolve the same.
Edited by: user13389425 on Jun 10, 2012 11:32 PM

I have alos configrured /dev/shm....
[root@rac2 pfile]# mount -t tmpfs shmfs -o size=1300m /dev/shm
[root@rac2 pfile]# df -kh
Filesystem            Size Used Avail Use% Mounted on
/dev/sda2              19G   13G 5.1G 73% /
/dev/sda5             874M 829M     0 100% /tmp
/dev/sda1              99M   14M   81M 15% /boot
tmpfs                 1.3G     0 1.3G   0% /dev/shm
shmfs                 1.3G     0 1.3G   0% /dev/shm
[root@rac2 pfile]# But still getting the error:
[grid@rac2 ~]$ srvctl start database -d dev
PRCR-1079 : Failed to start resource ora.dev.db
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
CRS-2674: Start of 'ora.FRA.dg' on 'rac2' failed
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
CRS-2674: Start of 'ora.DATA1.dg' on 'rac2' failed
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
CRS-2632: There are no more servers to try to place resource 'ora.dev.db' on that would satisfy its placement policy
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
ORA-01078: failure in processing system parameters
CRS-2674: Start of 'ora.dev.db' on 'rac1' failed
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
Process ID: 0
Session ID: 0 Serial number: 0
[grid@rac2 ~]$

RAC ENV IP address

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