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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Table Size
SQL> @actual eid_roles
BYTES_USED
SQL> select sum(bytes) from dba_segments where segment_name = 'EID_ROLES' SQL> / SUM(BYTES)
The script reports the blocks (as determined by the rowid substring) that have live rows in them and multiplies it by the db_block size. It does not report blocks that have no rows and, presumably, are available for new data.
In your example, it would depend on how many rows per block. It could or could not return the same result. It returns the blocks with live data expressed as bytes.
"Mercadante,
Thomas F" To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
<NDATFM cc:
@labor.state.ny. Subject: RE: Table Size
us>
Sent by:
ml-errors
10/16/2003 10:19
AM
Please respond
to ORACLE-L
Thomas,
All that this does is report the number of rows. It does not deal with any columns within the table. If I had two tables with the exact number of rows, but one table had 10 2K columns fully populated, and the other table had 10 1-char columns fully populated, this query would return the same result.
I'm not really sure what value this query has.
Tom Mercadante
Oracle Certified Professional
-----Original Message-----
Sent: Wednesday, October 15, 2003 4:49 PM
To: Multiple recipients of list ORACLE-L
This will get you that actual bytes used by the data in the table; however, it will hit every row in the table and take a long time to run. It takes one parameter, the table being sized.
rem ****************************************************rem this code was inspired by Kevin Loney
rem ****************************************************set verify off;
"Pillai, Rajesh"
<Rajesh.Pillai To: Multiple recipients
of list ORACLE-L <ORACLE-L_at_fatcity.com>
@nordstrom.com> cc:
Sent by: Subject: RE: Table Size
ml-errors
10/15/2003 04:19
PM
Please respond
to ORACLE-L
Allan,
I cannot run stats on the table
Regards,
Rajesh
-----Original Message-----
From: Nelson, Allan [mailto:anelson_at_midf.com]
Sent: Wednesday, October 15, 2003 12:54 PM
To: Multiple recipients of list ORACLE-L
Subject: RE: Table Size
If you are running stats on this table or can run stats use
dba_segements
Allan
-----Original Message-----
From: Pillai, Rajesh [mailto:Rajesh.Pillai_at_nordstrom.com]
Sent: Wednesday, October 15, 2003 2:24 PM
To: Multiple recipients of list ORACLE-L
Subject: Table Size
Hi All,
Could somebody help me in finding the actual size of an
oracle table in GB.
TIA,
Rajesh
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-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Thomas Day INET: tday6_at_csc.com Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting servicesReceived on Fri Oct 17 2003 - 15:49:32 CDT
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