sqlplus: error while loading shared libraries: libsqlplus.so

$ sqlplus / as sysdba
报错如下：
sqlplus: error while loading shared libraries: libsqlplus.so: cannot open shared object file: No such file or directory

（1）设置环境变量 LD_LIBRARY_PATH
export LD_LIBRARY_PATH=/u01/app/oracle/product/11.2/db_1/lib

（2）把 libclntsh.so.11.1 删了，再用其他位置的文件替换
rm -f  /u01/app/oracle/product/11.2/db_1/lib/libclntsh.so.11.1

find /u01 -name libclntsh.so.11.1

cp /u01/app/oracle/product/11.2/db_1/inventory/backup/2023-03-20_01-06-08AM/Scripts/ext/lib/libclntsh.so.11.1 /u01/app/oracle/product/11.2/db_1/lib/libclntsh.so.11.1