ORA-12269：client uses weak encryption/crypto-checksumming version

解决方法：Upgrade the client to use stronger version of the encryption and crypto-checksumming adapter. If support for weaker version is needed, add the following to sqlnet.ora file to allow connections to weak clients: sqlnet.allow_weak_crypto_clients = true CAUTION: This parameter allows insecure network connections between a client and server. Hence, it must not be used unless the client cannot be updated to run stronger version of the encryption and crypto-checksumming adapter. User is strongly advised to consider the implications of this parameter before configuring it to allow weak connections.