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Difference between Session and Instance??? [message #54713]

Fri, 29 November 2002 23:39

raman
Messages: 66
Registered: February 2000

Member

Hi

I know Instance means SGA+Background processes!

When do we use multiple instances on a same database? Please provide an example...

thankyou
raj

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Re: Difference between Session and Instance??? [message #54743 is a reply to message #54713]

Mon, 02 December 2002 15:10

sharan alva
Messages: 57
Registered: November 1999

Member

Raj,
An instance is a seperate database - ( not considering OPS or RAC ). An oracle_home can have more than one instances, each instance should have it's own SID ( in the same machine ) you cannot have two instances with the same sid running in the same machine.

Sharan

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Re: Difference between Session and Instance??? [message #54773 is a reply to message #54743]

Wed, 04 December 2002 05:20

sai sreenivas jeedigunta
Messages: 370
Registered: November 2001

Senior Member

Continuing sharan's answer ,
One instance can have multiple sessions..

sai

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