Article - CS301122

Oracle is performing implicit conversion on prodarev.idA312typeInfoLCSProduct for linesheet SQL in FlexPLM 10.2

Modified: 15-Feb-2019   


Applies To

  • FlexPLM 10.2

Description

  • Linesheet query plan shows implicit conversion from VARCHAR2 to NUMBER for idA312typeInfoLCSProduct column in prodarev table:
Predicate Information (identified by operation id):
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  17 - filter(("LCSPRODUCT"."IDA312TYPEINFOLCSPRODUCT"=TO_NUMBER(:33) AND
 
  22 - access("T34726119"."IDA2A2"=TO_NUMBER(:33))
 
Peeked Binds (identified by position):
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  33 - :33 (VARCHAR2(30), CSID=873): '449982'
  • Implict conversion is bad for performance because it could prevent the query from using an index on that column
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