Error Segmentation Fault with sqlplus in Oracle

Error

sqlplus / as sysdba
SQL*Plus: Release 12.1.0.1.0 Production on Thu Jul 3 15:33:53 2020
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Enter password:
Segmentation fault


Solution
Following are the solution, you can tried. If you want to know the exact cause then lock a ticket at Oracle Support.

Following are the hit/trial methods may or may not work:

1. Need to check the binaries and relink them all with RELINK commands:

$ORACLE_HOME/bin> relink all


2. Try to login with SUDO option

sudo ./sqlplus


3. Check the limits parameter for the Oracle Software which you configured during the installation and match with installation document. Then try again.

-- Get list of parameters when set during installation as minimum requirement
ulimit -a


4. The dump file is generated for the error. please check alert log directory or CDUMP location.