OraFAQ Forum: Server Administration » dba

Home » RDBMS Server » Server Administration » dba_segment

Show: Today's Messages :: Polls :: Message Navigator
E-mail to friend

dba_segment [message #525454]

Mon, 03 October 2011 05:39

hanner
Messages: 90
Registered: August 2011
Location: at HOME

Member

select sum(bytes/1024/1024) from dba_segments where owner='IPPS';

Does the above finding means that IPPS has use up 'this amount' of space in the database from all his objects?

Report message to a moderator

Re: dba_segment [message #525455 is a reply to message #525454]

Mon, 03 October 2011 05:44

Michel Cadot
Messages: 68641
Registered: March 2007
Location: Nanterre, France, http://...

Senior Member
Account Moderator

Has this amount currently allocated for its objects.

Regards
Michel

Report message to a moderator

Re: dba_segment [message #525457 is a reply to message #525455]

Mon, 03 October 2011 06:00

hanner
Messages: 90
Registered: August 2011
Location: at HOME

Member

In line with this, i was thinking why before export a schema object, i observe people would use the above script to check how big it is before actually doing a exporting. Thus i brought my doubt over here. Hmmm..not too sure what you mean micheal... . I was thinking in the line how much space this person has taken up for all his whatever objects

Report message to a moderator

Re: dba_segment [message #525460 is a reply to message #525457]

Mon, 03 October 2011 06:06

hanner
Messages: 90
Registered: August 2011
Location: at HOME

Member

In line with SPACE....does

select segment_name as tablename, sum(bytes/ (1024 * 1024 * 1024)) as tablesize_in_GB From dba_segments
where segment_name = 'TABLE_WHOSE_SIZE_I_WANT_TO_KNOW' and OWNER = 'WHO OWNS THAT TABLE'

returns me the size of the table own by that particular owner?

Report message to a moderator

Re: dba_segment [message #525462 is a reply to message #525457]

Mon, 03 October 2011 06:15

Michel Cadot
Messages: 68641
Registered: March 2007
Location: Nanterre, France, http://...

Senior Member
Account Moderator

Quote:

I was thinking in the line how much space this person has taken up for all his whatever objects

"has taken" or "has used" is ambiguous, the meaning depends on the one that reads it.
"is currently allocated to" can't be read another way that what it means.

Regards
Michel

Report message to a moderator

Re: dba_segment [message #525463 is a reply to message #525460]

Mon, 03 October 2011 06:21

Michel Cadot
Messages: 68641
Registered: March 2007
Location: Nanterre, France, http://...

Senior Member
Account Moderator

hanner wrote on Mon, 03 October 2011 13:06

In line with SPACE....does

select segment_name as tablename, sum(bytes/ (1024 * 1024 * 1024)) as tablesize_in_GB From dba_segments
where segment_name = 'TABLE_WHOSE_SIZE_I_WANT_TO_KNOW' and OWNER = 'WHO OWNS THAT TABLE'

returns me the size of the table own by that particular owner?

1/
It depends on what you mean by size of the table, does it contain the indexes?

2/
A segment is not necessary a table, it can be an index, a partition, a subpartition...

3/
A table in a cluster has no segment (it resides in the cluster segment) and so your query will return no rows.

Regards
Michel

Report message to a moderator

Re: dba_segment [message #525468 is a reply to message #525463]

Mon, 03 October 2011 06:57

hanner
Messages: 90
Registered: August 2011
Location: at HOME

Member

yes, everything...as i understand that table can contain indexes ... partition tables.. .

Report message to a moderator

Re: dba_segment [message #525490 is a reply to message #525468]

Mon, 03 October 2011 08:20

Michel Cadot
Messages: 68641
Registered: March 2007
Location: Nanterre, France, http://...

Senior Member
Account Moderator

So your statement does not include all spaces allocated to the table.

Regards
Michel

Report message to a moderator

Previous Topic:	ORACLE_HOME
Next Topic:	dba_free_space

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Wed Apr 17 20:15:15 CDT 2024