I am running the following command to create a backup file on an Oracle 8i database running on a Netware 5 server:
exp81 system/manager full=y file=User:orahome1hris_backup.dmp 
I receive the following error message: "exporting referential integrity constraints. exporting synonyms"
EXP-00008: ORACLE error 904 encountered
ORA-00904: invalid column name
EXP-00000: Export terminated unsuccessfully
What do I need to do to find out what the column name is that is causing the error?

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It looks like the Data Dictionary is not correct. Sign on to the database with SQL*Plus as the SYS user and run the catexp.sql script found in your ORACLE_HOME/rdbms/admin directory. That should fix the problem.

This was first published in October 2005

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