We can create pfile from the spfile of an instance which is currently shut down. Right?
SQL*Plus: Release 11.1.0.7.0 - Production on Mon Apr 12 02:06:52 2010
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Connected to an idle instance.
SQL> create pfile from spfile;
File created.
Reason why we need it:
We used to have an instance which consumed 5 gb Memory_target and then we shut it down. It was using SPFILE. Now we want to bring up this instance with only 3gb Memory_target. So we are thinking of editing the pfile created using the above method. It should be fine. Right?