RE: alter table move and redo log
- From: "Bobak, Mark" <Mark.Bobak@xxxxxxxxxxxx>
- To: "kennaim@xxxxxxxxx" <kennaim@xxxxxxxxx>, "adar666@xxxxxxxxxxxx" <adar666@xxxxxxxxxxxx>
- Date: Sun, 15 Mar 2009 03:46:31 -0400
Note also, that since 'nologging' only applies to a small subset of operations,
worrying about setting a particular object back to 'logging' is probably not
very urgent or important. For example, in the case of indexes, the only thing
that the object level 'nologging' setting will effect is the next rebuild, if
neither 'logging' nor 'nologging' is set in the alter statement. In the case
of a table, it's only insert w/ APPEND hint that would be impacted.
-Mark
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On
Behalf Of Kenneth Naim
Sent: Sunday, March 15, 2009 2:27 AM
To: adar666@xxxxxxxxxxxx
Cc: 'ORACLE-L'
Subject: RE: alter table move and redo log
1. Yes it becomes permanent as it is part of the ddl.
2. Yes alter table logging will making it logging again.
3. No there isn't a method within a single command to move an object
nologging and have it be logging afterwards. It is very standard to rebuild
certain objects nologging and then make them logging again. I do this
nightly in my data warehouse where I rebuild bitmap index in parallel
nologging and then alter them noparallel logging.
Ken
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]
On Behalf Of Yechiel Adar
Sent: Sunday, March 15, 2009 3:20 AM
Cc: 'ORACLE-L
Subject: Re: alter table move and redo log
If I run:
Alter table move nologging lob ...
1) Does the "nologging" part become permanent for the table or is it
just for the move.
2) Will "Alter table logging" after the move command reactivate the
logging of transactions for the table.
3) Is there an option to suppress login just for the move, like append
does for insert?
Adar Yechiel
Rechovot, Israel
Kenneth Naim wrote:
> You can do move the table nologging and alter it logging after the move or
> do it logging and backup your archive logs to tape frequently during the
> process.
>
>
>
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