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Home -> Community -> Mailing Lists -> Oracle-L -> Re: how to hint a unique index scan?
You can define the exact index you want to use.
/*+ INDEX ( table [index [index]...] ) */
HTH,
Mike
[EMAIL PROTECTED] wrote:
Is there anyway to hint a specific type of scan? I know you can hint a fast full scan.
I have something odd happening. I made a copy of a tablespace and transported that copy with in the same instance. So in the one instance. I have two copies of this tablespace.
I have two tables that are 99% identical. IE one has about 1% more records and if you validate the indexes on each they are also less than 1% apart.
Now in one tablespace an update does an Unique Scan and in the other the EXACT same update does a full scan and runs ALOT slower. I want to mess around.
anyway to force a unique index scan? Both tables are analyzed.
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
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Author: Michal Zaschke
INET: [EMAIL PROTECTED]
Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting servicesto: [EMAIL PROTECTED] (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 Jun 18 2003 - 06:45:20 CDT
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