SQLLDR Shows High CPU Usage On Internal Select From LOADER_COL_FLAGS (Doc ID 2126508.1)

Last updated on APRIL 12, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.4 and later
Information in this document applies to any platform.

Symptoms

Large SQLLDR jobs can use excessive system CPU, with a large portion of the usage due to internal SQLLDR call to LOADER_COL_FLAGS checking for virtual columns:


    Select 'x' from loader_col_flags l where l.table_owner=:owner and l.table_name=:tname and l.colname=:cname and l.isvirtual='Y'

Cause

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