RE: RMAN restore into nearly full file system

>>David Roberts

>> In the past no Oracle database files should be sparse,
>> although locally managed temporary tablespaces are now
>> created as sparse files I believe. However these will not
>> normally be backed up by RMAN and shouldn't be a problem.

I seem to remember that sparse TEMPFILES were introduced at 9i. I remember also, in a past life, having problems with these as our "standards" at the time was "everything on one big bucket" on an EVA.

When the TEMPFILES were created they appear to be at full size, but in effect are not. But they can grow into the space already "allocated" for them as and when required.

Unless, of course, some other DATAFILEs (or the archived logs - don't ask!) have already expanded so as to reduce the amount of space left on the disc.

I'm wondering if your TEMPFILES for the currently running database have been written to and not yet cleared down so that they have expanded into the available space and RMAN is therefore unable to write a DATAFILE into that space?

Also, has anyone created a new tablespace, or extended any on the database but so far, they haven't been backed up by RMAN?

If you are doing a full restore, I'd be tempted to wipe out the destination disc space of any files that may be sitting around before I start.

Cheers,
Norman.

Norman Dunbar
Contract Senior Oracle DBA
Capgemini Database Team (EA)
Internal : 7 28 2051
External : 0113 231 2051

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