In Oracle Database 19c, execute the following procedure to create a symbolic link for the Oracle libraries on all nodes where you installed Oracle Database.
Change directory to the Oracle library directory as an Oracle user.
The Oracle library directory is "lib" under the directory specified by the environment variable "ORACLE_HOME".
$ cd $ORACLE_HOME/lib
Check whether the symbolic link file "libclntsh.so. 12.1" exists.
$ ls -l libclntsh.so.12.1
If not exists, create a symbolic link file.
$ ln -s libclntsh.so libclntsh.so.12.1 $ ls -l libclntsh.so* lrwxrwxrwx 1 oracle oinstall 17 Sep 10 09:50 libclntsh.so -> libclntsh.so.19.1 lrwxrwxrwx 1 oracle oinstall 12 Sep 10 09:50 libclntsh.so.10.1 -> libclntsh.so lrwxrwxrwx 1 oracle oinstall 12 Sep 10 09:50 libclntsh.so.11.1 -> libclntsh.so lrwxrwxrwx 1 oracle oinstall 12 Sep 12 11:43 libclntsh.so.12.1 -> libclntsh.so lrwxrwxrwx 1 oracle oinstall 12 Sep 10 09:50 libclntsh.so.18.1 -> libclntsh.so -rwxr-xr-x 1 oracle oinstall 92869184 Sep 10 09:50 libclntsh.so.19.1
Check whether the symbolic link file "libclntshcore.so.12.1" exists.
$ ls -l libclntshcore.so.12.1
If not exists, create a symbolic link file.
$ ln -s libclntshcore.so libclntshcore.so.12.1 $ ls -l libclntshcore.so* lrwxrwxrwx 1 oracle oinstall 21 Sep 10 09:50 libclntshcore.so -> libclntshcore.so.19.1 lrwxrwxrwx 1 oracle oinstall 16 Sep 12 13:27 libclntshcore.so.12.1 -> libclntshcore.so -rw-r--r-- 1 oracle oinstall 14429736 Apr 19 15:41 libclntshcore.so.18.1 -rwxr-xr-x 1 oracle oinstall 14430280 Sep 10 09:50 libclntshcore.so.19.1