Missing Column Statistics After DataPump Import (IMPDP)
(Doc ID 1377849.1)
Last updated on AUGUST 04, 2018
Applies to:Oracle Server - Enterprise Edition - Version 188.8.131.52 to 184.108.40.206 [Release 11.1 to 11.2]
Information in this document applies to any platform.
Missing column statistics in target database after DataPump export/import.
The following query doesn't return the same result in source and target databases:
SQL> SELECT COUNT(*) FROM USER_TAB_COL_STATISTICS WHERE TABLE_NAME='<TABLE NAME>'
For example, in source database the statement returns:
and in target database, after import:
The missing column statistics results in bad execution plans in target database.
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