Below error appears when we try to log in to 11g Database using sqlplus.
The issue does not appear when I logged in to a separate session and set environment like ORACLE_HOME and ORACLE_SID manually.
$ sqlplus '/ as sysdba'
SP2-1503: Unable to initialize Oracle call interface
SP2-0152: ORACLE may not be functioning properly
The issue does not appear when I logged in to a separate session and set environment like ORACLE_HOME and ORACLE_SID manually.