The init.ora/spfile parameter SEC_CASE_SENSITIVE_LOGON got deprecated since Oracle Database 12.1.0.1. This means, we don’t do any further developments to it, you shouldn’t change it from its default TRUE – and if you still do you’ll receive a nice warning during STARTUP of your database:
SQL> alter system set sec_case_sensitive_logon=false scope=spfile;
System altered.
SQL> startup force
ORA-32004: obsolete or deprecated parameter(s) specified for RDBMS instance
ORACLE instance started.
Recently a customer asked me if we’d changed the behavior of this parameter in Oracle Database 12c Release 2 as he receives now an ORA-1017: Invalid username or password error when …
