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Home -> Community -> Mailing Lists -> Oracle-L -> Re: insert nologging parallel/noparallel and archiving
I'm doing this from memory, so you may want to RTFM
to verify this information.
With a non-parallel insert, you will need to use the APPEND hint to avoid generating redo. Read the fine documentation as to why this is necessary.
With a parallel INSERT, the data will all be APPENDed by default anyway, so the logs will not be generated.
Jared
Gurelei <gurelei_at_yahoo.com>
Sent by: root_at_fatcity.com
07/05/2002 11:43 AM
Please respond to ORACLE-L
To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
cc:
Subject: insert nologging parallel/noparallel and archiving
Hi all.
I've been trying to copy a 20mil rows table between
two databases via insert as select statement. I
have dropped all the indices and ran in nologging mode
with hints forcing parallel execution of both ISERT
and SELECT. While checking the archive directory I
have noticed that the archives have been created every
2 minutes. I have cancelled the load and noticed that
I forgot to alter system enable parallel dml so in
effect the load was going in sequential mode. Then I
reran my script having added the alter system
statement and there we no archive created while it
ran.
So it looks like even without the indices a sequential
insert as select nologging still creates the archives
wihle the parallel - doesn't. Does it sound right? If
so, why. I thought the nollogging and with no indices
shouldn't produce any log info regardless of the mode.
TIA Gene
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Author:
INET: Jared.Still_at_radisys.com
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists --------------------------------------------------------------------To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Received on Fri Jul 05 2002 - 15:08:25 CDT
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