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Can I Specify an Oracle Hint for a Query

Posted on Nov 19, 2004 at 01:45 PM 64 Views

We are BW 3.1 Oracle 9.2. We have a few InfoCube queries that would perform better if a full table scan on the fact table was done rather than using the system generated Star Transformation hint.

When use RSRT or other entry points to see the SQL and the Explain plan, I have the option of putting in an Oracle hint and generating another Explain Plan.

Is there any way to save the query with a different Oracle hint than the Star Transformation hint?

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  • author's profile photo Former Member
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    Posted on Dec 01, 2004 at 01:25 PM
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    Hi John,

    I'm afraid you can't do that because that's not a property of a query but done by the data manager.

    You could do the following (not recommended by SAP): Disable star transformation with Oracle parameter star_transformation_enabled but that would most probably have a negative impact on other queries.

    Another possibility is that these query would better run on an ODS Object than an InfoCube. So if you have the data in an ODS Object you could use that for reporting without star transformation.

    Regards, Klaus

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