Issue:./sqlplus: error while loading shared libraries: libnsl.so.1: cannot open shared object file: No such file or directory

1) Run the below command :  ldd $ORACLE_HOME/bin/sqlplus

[oracle@ontoimd0bav101 instantclient]$ ldd $ORACLE_HOME/bin/sqlplus

linux-vdso.so.1 (0x00007ffccf3d8000)

libsqlplus.so => /opt/oneid/Oracle/Middleware/Oracle_OIM/instantclient/libsqlplus.so (0x00007f3d0d98c000)

libclntsh.so.18.1 => /opt/oneid/Oracle/Middleware/Oracle_OIM/instantclient/libclntsh.so.18.1 (0x00007f3d099ce000)

libclntshcore.so.18.1 => /opt/oneid/Oracle/Middleware/Oracle_OIM/instantclient/libclntshcore.so.18.1 (0x00007f3d093eb000)

libmql1.so => /opt/oneid/Oracle/Middleware/Oracle_OIM/instantclient/libmql1.so (0x00007f3d0918b000)

libipc1.so => /opt/oneid/Oracle/Middleware/Oracle_OIM/instantclient/libipc1.so (0x00007f3d08d19000)

libnnz18.so => /opt/oneid/Oracle/Middleware/Oracle_OIM/instantclient/libnnz18.so (0x00007f3d085c4000)

libdl.so.2 => /lib64/libdl.so.2 (0x00007f3d083c0000)

libm.so.6 => /lib64/libm.so.6 (0x00007f3d0803e000)

libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f3d07e1e000)

libnsl.so.1 => not found

librt.so.1 => /lib64/librt.so.1 (0x00007f3d07c16000)

libaio.so.1 => /lib64/libaio.so.1 (0x00007f3d07a13000)

libresolv.so.2 => /lib64/libresolv.so.2 (0x00007f3d077fc000)

libc.so.6 => /lib64/libc.so.6 (0x00007f3d07439000)

libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f3d07221000)

libnsl.so.1 => not found

libons.so => /opt/oneid/Oracle/Middleware/Oracle_OIM/instantclient/libons.so (0x00007f3d06fd1000)

/lib64/ld-linux-x86-64.so.2 (0x00007f3d0dc80000)

libnsl.so.1 => not found

libnsl.so.1 => not found

 

You will see the missing packages

 

2) Install the libnsl

NOTE: to install this you need to have root user access

3) sudo su root

4) Yum install libnsl

5) dnf install libnsl.x86_64

 

Now that you have all the necessary package you will not see this error.