Check environment variables
After setting, re-run sqlplus /nolog . If the error disappears, add the export to your .bash_profile , .profile , or .cshrc .
If you suspect corruption of the binaries and you are on a supported UNIX platform with the correct compilers installed, you can relink Oracle executables. : Close web browsers or other heavy applications
: Close web browsers or other heavy applications to free up RAM. Adjust Oracle Memory
If the library versions are not compatible, update them to the correct versions. If your environment variables are correct and the
If you have a 64-bit operating system but installed a 32-bit Oracle client (or vice versa), SQL*Plus may try to load a library of the wrong architecture, leading to a variant of Error 57.
If your environment variables are correct and the error persists, you may have a 32-bit/64-bit mismatch. You cannot run a 64-bit SQL*Plus binary on a 32-bit OS. Check environment variables After setting
# Check permissions (should be at least 644) ls -l $ORACLE_HOME/sqlplus/mesg/sqlplus.msb