Re: Oracle 9.2.0.5 "10046" Tracing Causes Server Crash on Windows 2000?
- From: "Michael McMullen" <ganstadba@xxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 3 Aug 2004 12:50:45 -0400
I need to be more specifc,
In my case all of my partitioned tables have a degree of 1 ie. no parallel.
If a query fires off on the table which doesn't use a global index or if the
partitioned key is specified then the query will serialize. So if a user
specifies where jack = 'NONE' and I don't have a bitmap index on jack then
the query will serialize. If I put a local bitmap index on jack and the
partitioned key is not specified in the query then a parallel index probe
into each local index.
Mike
----- Original Message -----
From: "Tanel Põder" <tanel.poder.003@xxxxxxx>
To: <oracle-l@xxxxxxxxxxxxx>
Sent: Tuesday, August 03, 2004 12:10 PM
Subject: Re: Oracle 9.2.0.5 "10046" Tracing Causes Server Crash on Windows
2000?
> > Queries will automatically go in parallel if you have partitioned tables
> and
> > your queries don't use the partition key unless you use a global index.
I
>
> Where does this information come from? When all tables/indexes *accessed*
by
> a query are NOPARALLEL, then the query is executed serially by default. (I
> emphasized "accessed" since there are cases like table having parallel
> degree, but an index on it doesn't then if the query can be satisfied by
> reading only for index, table's degree is ignored and indexes one is
used).
>
> Btw, alternatively you may want to "alter session disable parallel query"
> (or parallel dml) for your sessions to set the default to noparallel.
>
> Tanel.
>
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