EXP-00091: Exporting questionable statistics

Dear Friend,
I am using Linux Database and Windows database, the problem now I am facing while exporting data from Linux which is imported from windows oracle database dump file.
when I am exporting I am getting this error
EXP-00091: Exporting questionable statistics
and shows
Export terminated successfully with warnings
Now exported file I am importing from Linux to windows and getting this error
Connected to: Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.1.0 - Production
Import file: EXPDAT.DMP > c:/aa.dmp
Enter insert buffer size (minimum is 8192) 30720>
IMP-00010: not a valid export file, header failed verification
IMP-00000: Import terminated unsuccessfully
Regards,
Oracle User

Hi,
>>because I exported dump from oracle10G
Then you use the exp 10g version, right ? To move data DOWN a version(s), you need to export using that lower versions EXP tool and using IMP that lower version tool.
Take a look at this below?
Exporting Data From Release 10.2 and Importing Into Earlier Releases
Export From      Import To      Use Export Utility For      Use Import Utility For
Release 10.2      Release 10.2      Release 10.2           Release 10.2
Release 10.2      Release 10.1      Release 10.1           Release 10.1
Release 10.2      Release 9.2      Release 9.2           Release 9.2
Release 10.2      Release 9.0.1      Release 9.0.1           Release 9.0.1
Release 10.2      Release 8.1.7      Release 8.1.7           Release 8.1.7
Release 10.2      Release 8.0.6      Release 8.0.6           Release 8.0.6
>>EXP-00091 is still remain.. you said I have to chang ethe NLS but I am new to linux
I think that there is no problem ... but you can use also as I said before the statistics=none clause, but remember that you need to use the exp 9i version ...
Cheers

Similar Messages

  • Error in Export "EXP-00091: Exporting questionable statistics  "

    when i execute export on server having RAC DB R10g R2 on Linux 4 it return error , nobody has changed it's characterset .
    how to fix this error, CAN THIS ERROR CAUSE BIG DESASTER TO DB IN FUTURE
    C:\>exp hst/hst file='/home/oracle/expdat.dmp
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    . exporting foreign function library names for user NRI
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    EXP-00091: Exporting questionable statistics.
    . . exporting table TABLEB 0 rows exported
    EXP-00091: Exporting questionable statistics.
    Kindly Help be ho can i fix this error
    Thanks in advance

    Hello,
    You wrote:
    CAN THIS ERROR CAUSE BIG DESASTER TO DB IN FUTUREThe error message EXP-00091: Exporting questionable statistics just warns you that the statistics
    were exported but these statistics may be not useable.
    So, if you have to import these Tables, you may have to collect again the statistics of these Tables.
    It's not relative to this problem but why don't you use DataPump (expdp/impdp) ?
    Please find enclosed a link about DataPump, it's much more powerful than the classical export/import:
    [http://download.oracle.com/docs/cd/B19306_01/server.102/b14215/dp_overview.htm#i1009203]
    Best regards,
    Jean-Valentin
    Edited by: Lubiez Jean-Valentin on Feb 6, 2010 12:56 PM

  • Error while exporting a table - EXP-00091

    I am doing an export of a table. The table has 1000838 rows. After the export is completed,
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    EXP-00091: Exporting questionable statistics.
    EXP-00091: Exporting questionable statistics.
    EXP-00091: Exporting questionable statistics.
    EXP-00091: Exporting questionable statistics.
    Export terminated successfully with warnings.
    I looked in the Oracle error messages document and found this out ---
    EXP-00091 Exporting questionable statistics
    Cause: Export was able to export statistics, but the statistics may not be useable. The statistics are questionable because one or more of the following happened during export: a row error occurred, client character set or NCHARSET does not match with the server, a query clause was specified on export, only certain partitions or subpartitions were exported, or a fatal error occurred while processing a table.
    Action: To export non-questionable statistics, change the client character set or NCHARSET to match the server, export with no query clause, or export complete tables. If desired, import parameters can be supplied so that only non-questionable statistics will be imported, and all questionable statistics will be recalculated.
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    And I certainly do not want to specify the import parameters to ignore the questionable statistics as no changes are desired in that area...(my hands are tied..).
    What could " a fatal error occurred while processing a table " mean? And how can this be traced and troubleshooted ? Or how can I find out if any row errors occurred ? And if required, how do I check the character sets and other likes ?? (I have no idea in this area)
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    What version of Oracle 9i are you using? Do you have a standard 'NLS_LANG' environment variable set on client's machines? Or do you set it to different values on different machines?
    Here is one of way you could get around it.
    Could you specify the export parameter 'STATISTICS=NONE' while exporting the table data?
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    If this is successful, you could use the import utility as usual. You could always compute or estimate statistics on the table after import.

  • Exp 00091

    Hi,
    while exporting full database like
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    i am getting exp 00091.
    is there any problem with this. or can i continue.
    thank you!

    Yes there is a problem with that.
    1 You didn't look up the error in the online documentation,
    and you dididn't post the error message when posting here , so others have to look up the error on your behalf . As a minimum effort in troubleshooting on your side you should ALWAYS look up the error and post the one line error text here, and there are no excuses for that.
    2 You didn't search this forum for the error
    In short: you should reconsult the Forums Etiquette post which states 'Consulting documentation is highly recommended'
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    Sybrand Bakker
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    regards,
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