Check your System PATH . Make sure the folder containing sqlplus.exe and its supporting DLLs is at the very beginning of your PATH variable. 2. The "Hidden" Memory Hog
# Test with minimal NLS_LANG unset NLS_LANG # Linux # or set to American export NLS_LANG=AMERICAN_AMERICA.US7ASCII Check your System PATH
SQL*Plus also loads message files (e.g., sqlplus.msb , sp1us.msb ) from $ORACLE_HOME/sqlplus/mesg . If these are missing or corrupted, you may also see a variant of Error 57. Check your System PATH
Ensure your environment is explicitly set before running SQL*Plus: Error 57 initializing SQLPlus - Oracle Forums Check your System PATH