Web application was not working, when connecting through ODBC application team is getting error ORA-28040 .
What Was changed:
Oracle database upgraded from oracle 126.96.36.199 to 188.8.131.52
SQLNET.ALLOWED_LOGON_VERSION default is changed to 11 from 8 in earlier versions. We need to modify the parameter to value 9 or less. SQLNET.ALLOWED_LOGON_VERSION is depreciated in 12c, SQLNET.ALLOWED_LOGON_VERSION_SERVER and SQLNET.ALLOWED_LOGON_VERSION_CLIENT replaced this parameter.