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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Speed up Truncate tables
I had the same problem when truncating a huge table (24 Mill rows). It turned out that the reason my table was taking so long was the amount of extents I had on it. I could look at what was actually happening during a truncate and it had to go and take each individual block and put them back in the available lists.
Well, after changing the settings on the table to make larger extents (and therefore fewer) the truncates on that table went hundreds of times faster (we had real bad settings on that table before).
You might investigate your storage parms and see just how many extents you do have on that table.
-----Original Message-----
Sent: Wednesday, August 15, 2001 3:10 AM
To: Multiple recipients of list ORACLE-L
Hi All,
Is there any way to speed up the truncating a big table with 12 million rows?
Basically, I implemented truncating that big table on Production, but it affected the performance much, so I had to stop it in the middle of way. All the rows were truncated but the HWM was not shrunk at all. I want to do it again to get the space back. Is there any way to speed up this process?
Platform: Oracle EE8.0.6 and Solaris 2.7
Thanks a lot in advance.
Chuan
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Please see the official ORACLE-L FAQ: http://www.orafaq.com
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Author: Chuan Zhang
INET: chuan_at_asiaonline.net
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).
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 Wed Aug 15 2001 - 10:45:17 CDT
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