How to optimise my search

Hello,
i am using wild card characters to search a string in the database.(%,_).
Ex:%ads%, _sd , nbd%  etc. I want to optimize search becoz when database is large it is taking lot of time and performance is decreasing. can any one pls help me in this regard.
Thanx in advance.
Hithi.

Hi,
to search a string in the databaseDon't very well understand, did you mean a search in all tables of database ?
Have you some code sample ?
Nicolas.

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    Index: search_for_calendars_common.xsl
    ===================================================================
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