This is the most frequent fix. On Linux, the dynamic linker needs to know where to find shared libraries (like libsqlplus.so). If LD_LIBRARY_PATH does not include the Oracle lib directory, Error 57 occurs.
Action: Add the Oracle library path to the variable:
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:$LD_LIBRARY_PATH
Note: If you are using a shell like csh or tcsh, use setenv instead of export.
First, ensure your Oracle environment is correctly set. As the Oracle software owner (e.g., oracle user), run:
echo $ORACLE_HOME
echo $PATH
echo $LD_LIBRARY_PATH
Expected Output:
If LD_LIBRARY_PATH is empty or missing the lib directory, set it:
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:$LD_LIBRARY_PATH
For AIX, use LIBPATH:
export LIBPATH=$ORACLE_HOME/lib:$LIBPATH
For HP-UX, use SHLIB_PATH:
export SHLIB_PATH=$ORACLE_HOME/lib:$SHLIB_PATH
For Solaris (64-bit), use LD_LIBRARY_PATH_64: This is the most frequent fix
export LD_LIBRARY_PATH_64=$ORACLE_HOME/lib:$LD_LIBRARY_PATH_64
After setting, re-run sqlplus /nolog. If the error disappears, add the export to your .bash_profile, .profile, or .cshrc.
We will approach the resolution systematically from the most likely cause to the least.
# Linux/Unix
echo $ORACLE_HOME
echo $LD_LIBRARY_PATH
echo $NLS_LANG
echo $PATH
If you have exhausted all steps above and the error persists, your Oracle installation is likely beyond repair. The fastest resolution is often a clean reinstallation:
Navigate to the library directory:
cd $ORACLE_HOME/lib
ls -l libsqlplus* libclntsh*
You should see files like:
If these files are missing, your Oracle installation is incomplete. This can happen if:
Remedy: Reinstall Oracle client or database software from the original installer, or restore from a valid backup.
The error message "SP2-0750: Error 57 initializing SQL*Plus error loading message shared library" is a common frustration for Database Administrators and developers working with Oracle databases. This error typically occurs immediately upon launching the sqlplus executable from the command line. Note: If you are using a shell like
Because the error prevents SQL*Plus from starting, it provides no further context, making it difficult to diagnose for beginners. Below is a breakdown of why this happens and how to resolve it.
The most common causes for Error 57 are: