Sometimes, running the executable from outside its home folder causes pathing issues. Navigate directly to the folder and run 🔍 Quick Troubleshooting Checklist ✅ Does the directory $ORACLE_HOME/sqlplus/mesg ✅ Are the files present in that folder? ✅ Is your variable including the $ORACLE_HOME/bin directory? To help you get this fixed quickly, could you tell me: Operating System are you using (Windows, Ubuntu, RedHat)? Are you using a Full Database installation or the Instant Client Did this start after a recent update new installation
: SQL*Plus may fail if the user does not have read and execute permissions for the Oracle home directory or the specific library files (e.g., libsqlplus.so on Linux). Sometimes, running the executable from outside its home
Confirm architecture compatibility