The REP-0001 error occurs when the Oracle Reports executable (like rwbuilder or rwrun ) looks for its message files (specifically .msb files) and comes up empty. This usually happens because:
Confirm .msb files exist in $ORACLE_HOME/reports/mesg (or similar). The REP-0001 error occurs when the Oracle Reports
: The builder uses the REPORTS_PATH variable to find various resources, including message files. including message files.