Firebird Optimization Tools

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March 23rd, 2006, 07:58 PM

jwilsonjr

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Firebird Optimization Tools

Has anyone had any experiences with the Firebird Optimization Tools currently available? We are seriously considering adding one to the tool kit if there is one that would be worth while having.

Looking forward to the feedback!

Jack

April 1st, 2006, 02:32 PM

pabloj

Modding: Oracle MsSQL Firebird

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I don't trust much those tools, I think that one of the best optimization practices is to keep fresh stats for your indexes, like shown here
the author suggests a stored proc to do "housekeeping"

sql Code:

Original - sql Code
SET TERM ^ ; CREATE PROCEDURE MAINTENANCE_SELECTIVITY AS DECLARE VARIABLE S VARCHAR(200); BEGIN FOR select RDB$INDEX_NAME FROM RDB$INDICES INTO :S DO BEGIN S = 'SET statistics INDEX ' \|\| s \|\| ';'; EXECUTE STATEMENT :s; END SUSPEND; END ^ SET TERM ; ^

SET TERM ^ ;
 
CREATE PROCEDURE MAINTENANCE_SELECTIVITY 
AS
DECLARE VARIABLE S VARCHAR(200);
BEGIN
FOR SELECT RDB$INDEX_NAME FROM RDB$INDICES INTO :S DO
BEGIN
S = 'SET statistics INDEX ' || s || ';';
EXECUTE STATEMENT :s;
END
SUSPEND;
END
^
 
SET TERM ; ^

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