If the ORACLE_HOME is defined incorrectly, the system looks in the wrong physical folder for the /reports/mesg directory. 2. The "Multiple Home" Conflict
Check the string value for ORACLE_HOME . If the path listed here doesn't match where the software is actually installed, REP-0001 will trigger. Step 4: Shorten the Path (The "Spaces" Issue) If the ORACLE_HOME is defined incorrectly, the system