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Restart RAC DB [message #577433]

Fri, 15 February 2013 09:55

Mohan10g
Messages: 159
Registered: May 2009
Location: INDIA

Senior Member

Hi,

I want to set the following parameter in one node and restart the machine.

ALTER SYSTEM SET MEMORY_MAX_TARGET=4G SCOPE=SPFILE sid='*'

I know we could use srvctl command to restart DB.My question is..to restart DB is it advisable to use
shutdown immediate and startup command ?

Thank you

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Re: Restart RAC DB [message #577435 is a reply to message #577433]

Fri, 15 February 2013 10:08

John Watson
Messages: 8964
Registered: January 2010
Location: Global Village

Senior Member

I don't understand your question. Do you mean this -

srvctl stop instance -d dbuniquename -i instancename -o immediate
srvctl start instance -d dbuniquename -i instancename -o open

If so, those are the default options.
--
John Watson
Oracle Certified Master
http://skillbuilders.com

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Re: Restart RAC DB [message #577455 is a reply to message #577435]

Fri, 15 February 2013 22:03

Mohan10g
Messages: 159
Registered: May 2009
Location: INDIA

Senior Member

Hi John,

My question is can we use shutdown immediate and startup command to restart DB after setting the above ALTER SYSTEM command ?

I hope my question is clear now.

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Re: Restart RAC DB [message #577457 is a reply to message #577455]

Sat, 16 February 2013 00:56

Michel Cadot
Messages: 68733
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

You can but it not the proper way.
The proper way is to use srvctl.
Do you understand what is RAC and its architecture?

Regards
Michel

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Re: Restart RAC DB [message #577458 is a reply to message #577455]

Sat, 16 February 2013 02:15

John Watson
Messages: 8964
Registered: January 2010
Location: Global Village

Senior Member

As I said, SHUTDOWN IMMEDIATE is what srvctl will do by default. If you prefer to save time with a SHUTDOWN ABORT, then use the option
-o abort
It is all in the help, you know:
srvctl -h

Rather annoyingly, srvctl does not have a FORCE option, so if you want to user STARTUP FORCE you need to do that with SQL*Plus.
--
Update: typo, missed out "not" in my final sentence. Corrected now.

[Updated on: Sat, 16 February 2013 02:16]

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Re: Restart RAC DB [message #577461 is a reply to message #577458]

Sat, 16 February 2013 03:17

Michel Cadot
Messages: 68733
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

Quote:

if you want to use STARTUP FORCE you need to do that with SQL*Plus.

Do NOT use this statement but in emergency case although I don't see the advantage of this one above SHUTDOWN ABORT (which also should be used only in emergency case) + STARTUP.
Too many people use STARTUP FORCE for anything, just to avoid typing 2 commands. It is a bad habit.

Regards
Michel

[Updated on: Sat, 16 February 2013 03:19]

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Re: Restart RAC DB [message #579516 is a reply to message #577461]

Tue, 12 March 2013 18:07

alan.kendall@nfl.com
Messages: 163
Registered: June 2012
Location: Culver City, California

Senior Member

Here are the commands that I use to restart RAC instances, ASM, CRS and Listeners.

Whenever I do maintenance on RAC, I stop then start one instance at a time. This way if
there is a startup error, I can fix it from one of the started instances and "Voila" I never
have an outage related to changing oracle memory parameters.

SYS AS SYSDBA> alter system set sessions=10000 scope=spfile sid='*';
System altered.
SYS AS SYSDBA> alter system set processes=10000 scope=spfile sid='*';
System altered.
SYS AS SYSDBA> alter system set open_cursors=10000 scope=spfile sid='*';
System altered.

>srvctl status database -d CSCDAP
Instance CSCDAP1 is running on node csprdcdadb01-fe
Instance CSCDAP2 is running on node csprdcdadb02-fe
Instance CSCDAP3 is running on node csprdcdadb03-fe
>srvctl stop instance -d CSCDAP -i CSCDAP1
>srvctl status database -d CSCDAP
Instance CSCDAP1 is not running on node csprdcdadb01-fe
Instance CSCDAP2 is running on node csprdcdadb02-fe
Instance CSCDAP3 is running on node csprdcdadb03-fe
>srvctl start instance -d CSCDAP -i CSCDAP1
>srvctl status database -d CSCDAP
Instance CSCDAP1 is running on node csprdcdadb01-fe
Instance CSCDAP2 is running on node csprdcdadb02-fe
Instance CSCDAP3 is running on node csprdcdadb03-fe
>srvctl stop instance -d CSCDAP -i CSCDAP2
>srvctl status database -d CSCDAP
Instance CSCDAP1 is running on node csprdcdadb01-fe
Instance CSCDAP2 is not running on node csprdcdadb02-fe
Instance CSCDAP3 is running on node csprdcdadb03-fe
>srvctl start instance -d CSCDAP -i CSCDAP2
>srvctl status database -d CSCDAP
Instance CSCDAP1 is running on node csprdcdadb01-fe
Instance CSCDAP2 is running on node csprdcdadb02-fe
Instance CSCDAP3 is running on node csprdcdadb03-fe
>srvctl stop instance -d CSCDAP -i CSCDAP3
>srvctl status database -d CSCDAP
Instance CSCDAP1 is running on node csprdcdadb01-fe
Instance CSCDAP2 is running on node csprdcdadb02-fe
Instance CSCDAP3 is not running on node csprdcdadb03-fe
>srvctl start instance -d CSCDAP -i CSCDAP3
>srvctl status database -d CSCDAP
Instance CSCDAP1 is running on node csprdcdadb01-fe
Instance CSCDAP2 is running on node csprdcdadb02-fe
Instance CSCDAP3 is running on node csprdcdadb03-fe

Here are commands that I used to check and stop "ASM" before some maintenance.
The asm instances came up on their own when the Unix boxes were restarted.

csdrdb01(oracle)/u01/home/oracle>srvctl status asm -n csdrdb01
ASM instance +ASM1 is running on node csdrdb01.
csdrdb01(oracle)/u01/home/oracle>srvctl status asm -n csdrdb02
ASM instance +ASM2 is running on node csdrdb02.
csdrdb01(oracle)/u01/home/oracle>srvctl stop asm -n csdrdb01
csdrdb01(oracle)/u01/home/oracle>srvctl stop asm -n csdrdb02
csdrdb01(oracle)/u01/home/oracle>srvctl status asm -n csdrdb01
ASM instance +ASM1 is not running on node csdrdb01.
csdrdb01(oracle)/u01/home/oracle>srvctl status asm -n csdrdb02
ASM instance +ASM2 is not running on node csdrdb02.

To shutdown the database prior to shutting down ASM I use the following commands.

>srvctl status database -d CSCDAP
>srvctl stop instance -d CSCDAP -i CSCDAP1
>srvctl stop instance -d CSCDAP -i CSCDAP2
>srvctl stop instance -d CSCDAP -i CSCDAP3
>srvctl status database -d CSCDAP

To stop CRS I did the following:

cd /u01/app/oracle/product/10.2.0/crs
crsctl check crs
crsctl stop crs

To restart the listener on one node:

csstgcdadb11(oracle)/home/oracle>srvctl status listener -n csstgcdadb11
Listener LISTENER is enabled on node(s): csstgcdadb11
Listener LISTENER is running on node(s): csstgcdadb11
csstgcdadb11(oracle)/home/oracle>srvctl status listener -n csstgcdadb12
Listener LISTENER is enabled on node(s): csstgcdadb12
Listener LISTENER is running on node(s): csstgcdadb12
csstgcdadb11(oracle)/home/oracle>srvctl stop listener -n csstgcdadb11
csstgcdadb11(oracle)/home/oracle>srvctl status listener -n csstgcdadb11
Listener LISTENER is enabled on node(s): csstgcdadb11
Listener LISTENER is not running on node(s): csstgcdadb11
csstgcdadb11(oracle)/home/oracle>srvctl start listener -n csstgcdadb11
csstgcdadb11(oracle)/home/oracle>srvctl status listener -n csstgcdadb11
Listener LISTENER is enabled on node(s): csstgcdadb11
Listener LISTENER is running on node(s): csstgcdadb11

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