Does the column referenced by the bind variable have a histogram on it? If so, is the value a popular one or not? Have you experimented w/o a histogram? I would troubleshoot the root cause, but one option is to use a SQL plan baseline to give the plan from the literal version to the bind version. https://blogs.oracle.com/optimizer/entry/how_do_i_deal_with_a_third_party_application_that_has_embedded_hints_that_result_in_a_sub-optimal_ex On Thu, Mar 22, 2012 at 10:53 PM, GovindanK <gkatteri@xxxxxxxxx> wrote: > Linux RAC ,11.1.0.7 > Query runs fast with hard coding / SQL*Plus '&' ; But when run through the > application using bind variables , the plan is different and it goes for > MERGE CARTESIAN JOIN. Metalink , google , underscore parameters are not of > much help. Tried different bucket sizes with statistics ; Tried rewriting > the query; Marginal improvement ; If you hard code or with SQL*Plus '&' the > query runs in 1 second .. but with bind variable it takes anywhere from 3 > to 10 minutes depending on the input values. > With hard code , it does not do MCJ but plan is different for few tables. > I don't say the query is written the best way. > > -- Regards, Greg Rahn | blog <http://bit.ly/u9N0i8> | twitter <http://bit.ly/v733dJ> | linkedin <http://linkd.in/gregrahn> -- //www.freelists.org/webpage/oracle-l