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Home -> Community -> Mailing Lists -> Oracle-L -> RE: sequence numbers
LOL --- Actually, I can't laugh too much because this is, sadly, too true!
April Wells
<awells To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
@csedge.com> cc:
Sent by: root Subject: RE: sequence numbers
10/09/2002
12:28 PM
Please
respond to
ORACLE-L
<snip>
Do you get the feeling that business rules should have come somewhat
earlier
in the project???
=)
Thank you Thomas...
April Wells
Oracle DBA
Keep yourself well oiled with life, laughter, new ideas and action.
Otherwise you will rust out. _Anonymous
-----Original Message-----
Sent: Wednesday, October 09, 2002 10:54 AM
To: Multiple recipients of list ORACLE-L
If the sequence is not cached then Oracle has to generate a new sequence
number for every record inserted (CPU cycles). NOORDER is the default so
that won't slow you up. If you're doing bulk loads why not cache the
sequence numbers? Is it important that there be no gaps? Even with
NOCACHE you can get gaps. If a sequence number is generated but the row
(insert or create) is not COMMITed the sequence number is not rolled back.
Unless there are fewer than 100 rows to be inserted I'd go with some caching.
April Wells
<awells To: Multiple recipients of
list
@csedge.com> cc:
Sent by: root Subject: sequence numbers
10/09/2002
10:54 AM
Please
respond to
ORACLE-L
I have been given create scripts for sequences to be used in tables that will be loaded via bulk loads. How huge is the potential performance hit if I take out the cache 20?
April Wells
Oracle DBA
There is neither good nor bad, but thinking makes it so. -Shakespeare
<< Attachment Removed : InterScan_Disclaimer.txt >>
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also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Thomas Day INET: tday6_at_csc.com Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- 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
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