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Home -> Community -> Mailing Lists -> Oracle-L -> how to hint a unique index scan?
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.
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