RE: Move table online and update the indexes at the same time.
- From: Pete Sharman <peter.sharman@xxxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Tue, 27 Jul 2004 08:29:20 +1000
Alex
DBMS_REDEFINITION does need an exclusive table lock for a short duration wh=
en it updates the data dictionary. =
BTW, in your earlier message you referred to ALTER TABLE MOVE. That's for =
IOT's only and wouldn't help anyway.
=
Pete
=
"Controlling developers is like herding cats."
Kevin Loney, Oracle DBA Handbook
=
"Oh no, it's not. It's much harder than that!"
Bruce Pihlamae, long-term Oracle DBA
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] =
On Behalf Of Alexandre Gorbatchev
Sent: Tuesday, 27 July 2004 8:05 AM
To: oracle-l@xxxxxxxxxxxxx
Cc: oracle-l@xxxxxxxxxxxxx
Subject: Re: Move table online and update the indexes at the same time.
Tanel,
Thanks for the reply.
It's 9i. I thought about table redefinition but I am not sure how it =
affect the performance. Second, I wonder if there a need to get a lock on =
the table just for a split of a second. We do not have any chance locking =
the table since there are always several transactions using it.
What is your experience? Since it appeared only in 9i I am a bit worried =
about using it.
Thanks,
Alex
From: Tanel Puder <tanel.poder.003@xxxxxxx>@freelists.org on 27-07-2004 =
=
00:34 ZE3
Please respond to oracle-l@xxxxxxxxxxxxx
Sent by: oracle-l-bounce@xxxxxxxxxxxxx
To:
<oracle-l@xxxxxxxxxxxxx>
cc:
Subject:
Re: Move table online and update the indexes at the same time.
> Hi all,
> We need to rebuild our table and index segments. I guess we wouldn't =
have
> problems rebuilding the indexes online. However, I don't see any way to
> move tables online. Of course, I can issue ALTER TABLE ... MOVE ONLINE,
> but this would invalidate all indexes of the table. I will have to =
rebuild
Oracle 10g: alter table shrink space cascade
Oracle 9i: dbms_redefinition package
Pre-Oracle 9i: custom mechanism, cloning table and recording changes with
triggers or snapshot logs.
Tanel.
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