Exp backup Export Times EXP-00091: Exporting questionable statistics "what about errors?"
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Problem phenomenon
When making exp backup to ORACLE database, export Times EXP-00091: Exporting questionable statistics "error: details are as follows:
EXP-00091: Exporting questionable statistics.
EXP-00091: Exporting questionable statistics.
EXP-00091: Exporting questionable statistics.
. . Exporting table test 12 rows exported
EXP-00091: Exporting questionable statistics.
. . Exporting table users 129 rows exported
EXP-00091: Exporting questionable statistics.
EXP-00091: Exporting questionable statistics.
EXP-00091: Exporting questionable statistics.
EXP-00091: Exporting questionable statistics.
The cause of the problem:
This problem is caused by the inconsistency between the database character set and the NLS_LANG of the operating system.
Treatment method:
Query the character set information of the database
SQL > select userenv ('language') from dual
USERENV ('LANGUAGE')
AMERICAN_AMERICA.WE8ISO8859P1
Set the NLS_ language value of the operating system
Export NLS_LANG=AMERICAN_AMERICA.WE8ISO8859P1
Rerun the database export command
Exp system/oracle file='/tmp/full.dmp' full=y
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