export LD_LIBRARY_PATH=$ORACLE_HOME/lib:$LD_LIBRARY_PATH
: The .msg files were accidentally deleted, or the installation failed to copy them completely. Step-by-Step Solutions Method 1: Verify and Set ORACLE_HOME
Oracle Reports looks for message files based on the NLS_LANG environment variable (e.g., AMERICAN_AMERICA.WE8MSWIN1252 ). If NLS_LANG specifies a language for which the .msb files do not exist (e.g., FRENCH_FRANCE but no French message files installed), Oracle falls back — and sometimes fails with REP-0001.
Windows Registry keys or Linux environment profiles point to invalid paths. Windows Registry keys or Linux environment profiles point
If the mesg folder is missing entirely, your installation is corrupt. You may need to reinstall or restore from a backup.
On Windows, if Oracle Reports is installed in C:\Program Files\Oracle and User Account Control (UAC) restricts read access, the process may be unable to read the message files. On Linux, incorrect chmod settings on the mesg directory will cause this.
: Always use the provided shell scripts or batch files (like rwbuilder.sh rwbuilder.bat ) located in the domain_home/bin On Windows, if Oracle Reports is installed in
Oracle Reports looks for specific files like rw.msb or rpu.msb in the mesg folder.
: There is evidence from Oracle Communities that if the directory path to the mesg folder exceeds 64 characters , it can trigger this specific error. Missing or Corrupted Resource Files :
If after trying these steps the issue still persists, it might be helpful to: Windows Registry keys or Linux environment profiles point
chmod -R 755 $ORACLE_HOME/reports/mesg
REP-0001: Unable to find the Report Builder message file - Causes and Fixes