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 <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
07/05/2002 11:43 AM
Please respond to ORACLE-L
To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
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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