Re: Tempfile weirdness

It also can be caused by bad sectors or other hardware errors, but I'd bet on sparse file problem as you described. When I create temp tablespaces, I either copy the tempfile into another filename and then rename to original using cp, that way the file isn't sparse anymore, thus no problems using it. Or another way is to create a regular tablespace with a datafile first, then drop the tablespace & then create temp tablespace reusing this datafile. That way can be handy when you don't have shell access for some reason.

Btw, in most unixes I've worked with, you can see the real size of a sparse file using ls -ls (in file system blocks).

Tanel.

• Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Thursday, September 18, 2003 2:04 AM

> We also ran into the IO error situation on a few of our 9i R2 databases
using TEMPfiles.
> DBAs forgot that the file system contained those tempfiles and created
other datafiles on those.
> We are now considering using dedicated file system naming convention that
will hold TEMPfiles. We
> already have /u888, and /u999 for dump dirs and archive logs respectively.
Now /u777 for tempfiles
> is under review.
>
> - Kirti
>
>
> --- Stephen Lee <Stephen.Lee_at_DTAG.Com> wrote:
> >
> > Any comments on the following??
> >
> > When creating index, got
> > ORA-00603: ORACLE server session terminated by fatal error
> >
> > apparently caused by
> >
> > ksedmp: internal or fatal error
> > ORA-01114: IO error writing block to file 121 (block # 149)
> > ORA-27063: skgfospo: number of bytes read/written is incorrect
> > Additional information: 16384
> > Additional information: 49152
> >
> > which I determined was caused by attempted write to temp tablespace
using a
> > tempfile. The tablespace was dropped and recreated, and all was well
again.
> >
> > What I think MIGHT have happened is the tablespace created weeks ago,
but
> > not used. So it didn't grab any actual storage. In the mean time, some
of
> > the storage might have been used by something else, but storage was
> > released. Now tempfile goes to grab some space, but filesystem is all
> > screwed up about what storage the tempfile should be grabbing.
> >
> > Does this sound plausible?
> > Is there something else going on here?
> > Is this another one of those spiffy cool things in Oracle that are just
> > something else to go wrong and make life a bitch?
> >
> > Note that the index create blew up immediately, so the original tempfile
> > never grabbed any space.
> > --
> > Please see the official ORACLE-L FAQ: http://www.orafaq.net
> > --
> > Author: Stephen Lee
> > INET: Stephen.Lee_at_DTAG.Com
> >
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Tanel Poder
  INET: tanel.poder.003_at_mail.ee

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