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SGA MAX SIGE [message #309103]

Wed, 26 March 2008 07:34

emind
Messages: 49
Registered: April 2007
Location: Islamabad

Member

I want to change my SGA MAX SIZE from 1G to 2G on windows 2003 but when i change it it's show me ORA-27100 Shared memory realm already exits.i have total 4 GB RAM in system.
Please tell me what is the solution for this.

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Re: SGA MAX SIGE [message #309104 is a reply to message #309103]

Wed, 26 March 2008 07:35

emind
Messages: 49
Registered: April 2007
Location: Islamabad

Member

Database version is 10g R2.

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Re: SGA MAX SIGE [message #309109 is a reply to message #309103]

Wed, 26 March 2008 07:53

varu123
Messages: 754
Registered: October 2007

Senior Member

Post the command

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Re: SGA MAX SIGE [message #309111 is a reply to message #309109]

Wed, 26 March 2008 07:57

emind
Messages: 49
Registered: April 2007
Location: Islamabad

Member

ALter System set SGA_MAX_SIZE=2G scope=spfile;

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Re: SGA MAX SIGE [message #309122 is a reply to message #309111]

Wed, 26 March 2008 08:35

Michel Cadot
Messages: 68718
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

Copy and paste your session.
Don't forget to format it as requested in guidelines.

Regards
Michel

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Re: SGA MAX SIGE [message #309342 is a reply to message #309103]

Thu, 27 March 2008 03:02

emind
Messages: 49
Registered: April 2007
Location: Islamabad

Member

SQL>startup
ORA-27100: shared memory realm already exists

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Re: SGA MAX SIGE [message #309347 is a reply to message #309342]

Thu, 27 March 2008 03:10

Michel Cadot
Messages: 68718
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

So shutdown it first.

Regards
Michel

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Re: SGA MAX SIGE [message #309360 is a reply to message #309103]

Thu, 27 March 2008 03:42

emind
Messages: 49
Registered: April 2007
Location: Islamabad

Member

I already shutdown database this message come when i try to start the database.if i start with pfile it's working fine because the impact of 2G parameter is only on SPfile.
is there any limitation in Oracle to change the SGA MAX size.

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Re: SGA MAX SIGE [message #309369 is a reply to message #309360]

Thu, 27 March 2008 04:22

Michel Cadot
Messages: 68718
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

Use ipcs to find shared memroy used by Oracle instance and remove it with ipcrm.

Regards
Michel

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Re: SGA MAX SIGE [message #309377 is a reply to message #309103]

Thu, 27 March 2008 04:49

emind
Messages: 49
Registered: April 2007
Location: Islamabad

Member

IPCS is for unix it's windows 2003 and i restart the Machine but it's same error.

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Re: SGA MAX SIGE [message #309389 is a reply to message #309377]

Thu, 27 March 2008 05:24

Michel Cadot
Messages: 68718
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

Set Oracle services in manual mode before restarting and then restart server.
In Windows, you have to set some parameters.
Have a look at Metalink note Implementing Address Windowing Extensions (AWE) or VLM on Windows Platforms, n�225349.1 and other associated ones.

Regards
Michel

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