use the workspace files ora 10g control

Hey;

Is there a way to know how much space is actually used in a control of oracle 10g file?

We just found out that two gross volumes containing control files are 96 megs and the third is 48 megs. There is a little history on how it happened that, frankly, is irrelevant. It must of course be fixed; However, I am curious to know how much space is actually used. It is obvious that it is less than 48 MB, or the database would be dropped. If it's 47,9999 megs, it is something "we do now" - if it is less that we have room to manoeuvre - this Saturday when the maintenance window is.

Thanks for all the tips/advice/suggestions.

Doug O'Leary

Dear dkoleary!

Please take a look at this:
>
You can calculate the size of the controlfile V$ CONTROLFILE_RECORD_SECTION. The size of each section is RECORD_SIZE * RECORDS_TOTAL rounded to a whole number of blocks. The block controlfile size is identical to the database block size. You then to double this size, because all data in the controlfile is stored in duplicate. This is necessary to recover in case the instance or the system crashes in the middle of a controlfile transaction. Finally, you must also enable 1 block for the header of the file. There is a script called controlfile_size.sql on Ixora web site that will do this for you.
>

Yours sincerely

Florian W.

Tags: Database

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