Re: Fast Full Index Scan in 8.1.7

I wanted to turn it off in testing so I could try some other indexes as an alternative. I'm not sure that I trust it to make a good decision.

Even with an alternative index hint, it's not using the index I'm trying to get it to use, but rather the fast full index scan. I can't see any typo but
maybe it just can't use that index with full full index scan enabled.

That's why I wanted to try and disable it and see what would happen.

CBO does some interesting things. Every time I think I have a handle on some aspect of it, it changes and starts doing something different.

Thanks for your reply.

Cherie

                                                                                       
                            
                    Jared Still                                                        
                            
                    <jkstill_at_cybco       To:     ORACLE-L_at_fatcity.com, 
Cherie_Machler_at_gelco.com                    
                    n.com>               cc:                                           
                            
                                         Subject:     Re: Fast Full Index Scan in 
8.1.7                            
                    09/07/01 12:04                                                     
                            
                    AM                                                                 
                            
                                                                                       
                            
                                                                                       
                            

The alternative is probably a full table scan.

Are you sure you want to turn it off?

I think you need to hint your SQL to do that.

Jared

On Thursday 06 September 2001 13:21, Cherie_Machler_at_gelco.com wrote:
> I had been using the FAST_FULL_SCAN_ENABLED initialization parameter in
an
> 8.0.4 database.
>
> Apparently this parameter is now obsolete in 8.1.7.2. Seems as though I
> am getting the fast full index
> scans automatically now. I'm not sure if I want them in all cases. Is
> there a way to turn them off?
>
> Thanks,
>
> Cherie Machler
> Oracle DBA
> Gelco Information Network

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