# Linux/Unix
echo $ORACLE_HOME
echo $LD_LIBRARY_PATH
echo $NLS_LANG
echo $PATH
# From Oracle Database installation zip
unzip -j V982063-01.zip "*/sqlplus/mesg/*.msb" -d $ORACLE_HOME/sqlplus/mesg/
strace sqlplus /nolog 2>&1 | grep ENOENT



Environment Configuration Issues



Installation Problems



File System Permissions



unzip instantclient-basic-linux.x64-19.8.0.0.0dbru.zip "/sqlplus/mesg/.msb" -d $ORACLE_HOME/sqlplus/

Solution 1: Fix PATH

# Add to System Environment Variables
SET ORACLE_HOME=C:\app\oracle\product\19.0.0\dbhome_1
SET PATH=%ORACLE_HOME%\bin;%ORACLE_HOME%\lib;%PATH%

Solution 2: Re-register Oracle libraries

# Run as Administrator
cd %ORACLE_HOME%\bin
sqlplus /nolog
# If that works, the issue is with environment

Solution 3: Check Windows SFC (System File Checker)

sfc /scannow
# Check for Oracle file corruption
chkdsk /f

Solution 4: Reinstall SQL*Plus component

# Using Oracle Universal Installer
setup.exe -deinstall -home %ORACLE_HOME% -component oracle.sqlplus
# Then reinstall component

If using Oracle Instant Client:

# For Instant Client
export LD_LIBRARY_PATH=/usr/lib/oracle/12.2/client64/lib
# Ensure libsqlplus.so exists there

ls -la $ORACLE_HOME/sqlplus/mesg/ ls -la $ORACLE_HOME/sqlplus/mesg/*.msb

Critical files: