Mandate TLS 1.2+ via sqlnet.ora :
# Create OS user matching database schema useradd scott # Configure external naming in sqlnet.ora SQLNET.AUTHENTICATION_SERVICES = (BEQ, TCPS) # Connect without password sqlplus /@PRODDB linux oracle client
SQLNET.SEND_TIMEOUT = 30 SQLNET.RECV_TIMEOUT = 30 SQLNET.INBOUND_CONNECT_TIMEOUT = 60 Mandate TLS 1
PRODDB = (DESCRIPTION = (ADDRESS_LIST = (LOAD_BALANCE = ON) (ADDRESS = (PROTOCOL = TCP)(HOST = primary-host)(PORT = 1521)) (ADDRESS = (PROTOCOL = TCP)(HOST = standby-host)(PORT = 1521)) ) (CONNECT_DATA = (SERVICE_NAME = prodservice) (RETRY_COUNT = 3) (RETRY_DELAY = 5) ) ) For performance troubleshooting: linux oracle client