Sunday, 1 May 2016

Re: [firebird-support] Re: Migrating from Super Classic FB 2.5.2 to SuperServer FB 3.0 could have a problems

 

Hi,

> This is the Query plan from SS FB 3.0
>
> PLAN (GET_STCK NATURAL)
>
> and here is the Query plan from SC FB 2.5.2
>
> PLAN (G_T3 NATURAL)(M_TT INDEX (RDB$PRIMARY2))(A INDEX (IDX_M_GD3))(A
> INDEX (IDX_M_GD3))SORT (JOIN (B INDEX (TM_D), A INDEX (T2_T1), C INDEX
> (RDB$PRIMARY25), D INDEX (RDB$PRIMARY21), E INDEX (RDB$PRIMARY24), F
> INDEX (RDB$PRIMARY23), G INDEX (RDB$PRIMARY22)))(M_TT INDEX
> (RDB$PRIMARY2))(A INDEX (IDX_M_GD3))(A INDEX (IDX_M_GD3))SORT (JOIN (B
> INDEX (T1_M_DL), A INDEX (T2_T1), C INDEX (RDB$PRIMARY25), D INDEX
> (RDB$PRIMARY21), E INDEX (RDB$PRIMARY24), F INDEX (RDB$PRIMARY23), G
> INDEX (RDB$PRIMARY22)))(M_TT INDEX (RDB$PRIMARY2))(A INDEX
> (IDX_M_GD3))(A INDEX (IDX_M_GD3))SORT (JOIN (B INDEX (T1_M_DL), A INDEX
> (T2_T1), C INDEX (RDB$PRIMARY25), D INDEX (RDB$PRIMARY21), E INDEX
> (RDB$PRIMARY24), F INDEX (RDB$PRIMARY23), G INDEX (RDB$PRIMARY22)))SORT
> ((G_T3 NATURAL))
>
> This could be a big problem, all queries/stored procedures/triggers must
> be test again for its performance.

Are you sure that you didn't deactivate indexes during the restore?

--
With regards,
Thomas Steinmaurer
http://www.upscene.com/

Professional Tools and Services for Firebird
FB TraceManager, IB LogManager, Database Health Check, Tuning etc.

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Posted by: Thomas Steinmaurer <ts@iblogmanager.com>
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