Oracle-L: RE: Locally-managed temp tablespace question

From: Spears, Brian <BSpears_at_Limitedbrands.com>
Date: Fri, 20 Dec 2002 11:38:55 -0800
Message-ID: <F001.00520402.20021220113855@fatcity.com>

Yes, this weird sizing with Tempfile...strange isn't it... ls shows accurately..

On HPUX the bdf (or df in your case) doesn't register the full size that is indicated what is supposed to be used by the tempfile. We haven't found a solution for this yet.. we cant wait till a directory fills and someone puts a datafile in the directory so the tempfile is reduced. Apparently I have been told by others that only space will shrink and you wont corrupt the files... but I dont like it. I just updated my scripts to show the tempfiles separately so I have a warning before I do any space change in the middle of the night.

Note: I think although rm'ing the files..it seems to take unix a while to catch

up and report its gone... I have had that several times.

It creates fast..which is nice...since you have to do it manually if you

       do a restore with RMAN. A nice gotcha.

Brian Spears

-----Original Message-----

Sent: Friday, December 20, 2002 12:05 PM To: Multiple recipients of list ORACLE-L

Oracle 8173 on Solaris 2.8:

bash-2.03$ pwd
/oracle/u02/oradata/YPD

bash-2.03$ df -k|grep /oracle/u02
/dev/dsk/c1t2d0s0 70592505 45549803 22924927 67% /oracle/u02

bash-2.03$ ls -l templmt*
-rw-r----- 1 oracle oinstall 2097160192 Dec 19 20:40 templmt01.dbf
-rw-r----- 1 oracle oinstall 2097160192 Dec 19 20:27 templmt02.dbf
-rw-r----- 1 oracle oinstall 2097160192 Dec 19 20:27 templmt03.dbf
-rw-r----- 1 oracle oinstall 2097160192 Dec 19 20:27 templmt04.dbf
-rw-r----- 1 oracle oinstall 2097160192 Dec 19 20:27 templmt05.dbf

bash-2.03$ rm templmt*

bash-2.03$ df -k|grep /oracle/u02
/dev/dsk/c1t2d0s0 70592505 44244651 24230079 65% /oracle/u02

I thought I should get 10GB (2097160192 x 5) back, but instead I got only 1.3MB ( 24230079 - 22924927) released. Could someone explain? BTW, when I created the temp files (templmt0[1-5]) for locally-managed temp tablespace, I found they were created extremely fast, so I suspected that not real disk space were allocated. But the "ls -l" command still showed 10GB were allocated.

TIA. Guang Mei

guangmei_at_yahoo.com
http://www.geocities.com/guangmei/

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Author: Guang Mei
INET: zlmei_at_hotmail.com

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Author: Spears, Brian
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