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Log in sys as sysdba

Posted on 2013-05-20
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Why am I getting an idle instance when I login as sys as sysdba?
I don't get an idle instance when I log in as sysyem.
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Question by:lium1
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12 Comments
 
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Expert Comment

by:slightwv (䄆 Netminder)
ID: 39181532
The message indicates the instance isn't running.

I'm not sure why system doesn't produce the idle instance message but I figure it will generate a message if you try to execute any command.
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Author Comment

by:lium1
ID: 39181591
I log in as system and do some query and it works. What do you mean by removed Unix OS Zone? When I do ps -ef | grep pmon, what message that I should be looking to make sure instances are running okay?
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by:slightwv (䄆 Netminder)
ID: 39181616
>>I log in as system and do some query and it works.

Then when you are connecting as SYSDBA, you aren't connecting to the same instance or the database isn't in an 'open' state.

Make sure your ORACLE_HOME is set properly.

>>When I do ps -ef | grep pmon, what message that I should be looking to make sure instances are running okay?

All that ps command does is make sure the pmon Oracle process is running.  This is just an indication the database is running.
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Author Comment

by:lium1
ID: 39181633
How do I make sue ORACLE_HOME is set properly, in Unix?
Do I have to say set or export?
If you could, please exact syntax?

Thanks in advance!
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Expert Comment

by:slightwv (䄆 Netminder)
ID: 39181650
Sorry ORACLE_HOME was a typo.  I meant ORACLE_SID.

Yes, export of variables is correct:
export ORACLE_SID=ORCL

Where ORCL is the database SID you are trying to connect to.
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Author Comment

by:lium1
ID: 39181738
Thanks, but when I do grep ORACLE_SID, it shows all pmon, smon, and background processes.
So, do I still need to export ORACLE_SID?
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LVL 77

Expert Comment

by:slightwv (䄆 Netminder)
ID: 39181900
We are getting way off topic here.

ORACLE_SID is just an environment variable that tells Oracle tools and utilities what instance it should try to connect to.

The message about the idle instance means:  The instance is down or not fully opened or you are trying to connect to an instance that doesn't exist.

For example if your instance name is ORCL and ORACLE_SID is set to BILL:
export ORACLE_SID=BILL

If you try to connect as sys, you will likely get an idle instance message.
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Author Comment

by:lium1
ID: 39181937
ORACLE_SID=ORCL is already set as environment variable in .cshr file. When I login as sys as sysdba/password@databasename, I am getting an idle instance message. What exactly that I need to resolve it?
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slightwv (䄆 Netminder) earned 1500 total points
ID: 39181960
>>When I login as sys as sysdba/password@databasename, I am getting an idle instance message

The @databasename is telling oracle to connect to a different database than the one set in ORACLE_SID.  Which database depends on what is set in $ORACLE_HOME/network/admin/tnsnames.ora and the databasename entry.
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Author Comment

by:lium1
ID: 39182023
I think the problem is solved by source .cshrc.
Thanks for your help any way, and I will give all credits to you.
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