Oracle data transmission encryption affects JDBC

This answer quotes ChatGPT

Enabling the SQLNET.ENCRYPTION_SERVER and SQLNET.ENCRYPTION_TYPES_SERVER parameters for Oracle 11g enables encryption of database transfers. This helps protect sensitive information in the database from unauthorized access. However, enabling encryption may affect applications that use JDBC to connect to a database, as it requires changing the JDBC connection parameters of the application to ensure that the application can connect to the encrypted database.

If you have the SQLNET.ENCRYPTION_SERVER and SQLNET.ENCRYPTION_TYPES_SERVER parameters enabled for Oracle 11g, you need to adapt the application to use the encrypted connection using the following parameters in the JDBC connection string:

Encryption algorithm: For the encryption algorithm enabled in SQLNET.ENCRYPTION_TYPES_SERVER, you need to configure your application's JDBC connection string with the corresponding encryption algorithm. For example, if you have enabled the RC4_256 encryption algorithm, you need to set the encryptionMethod parameter in the JDBC connection string to "RC4_256".

Encryption level: For the SQLNET.ENCRYPTION_SERVER parameter, you need to set the encryptionLevel parameter in your application's JDBC connection string to "REQUIRED".

Here is an example of an Oracle JDBC connection string using an encrypted connection:

jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCPS)(HOST=myhost)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=myorcldbservicename))(SECURITY=(encryption=required)(encryption_algorithm=RC4_256)))

In this connection string, the encryption parameter is set to "required" and the encryption_algorithm parameter is set to "RC4_256" to connect to the Oracle database using an encrypted connection.

Note that the specific JDBC connection string parameters may vary by driver version and Oracle database version. Therefore, you are advised to refer to related documents to obtain correct parameter Settings.

Answers are quoted from cahtgpt.
Enabling these two parameters will affect application services that use JDBC to connect to the database. To solve this problem, you need to add a parameter to the JDBC connection string, namely "oracle.net.encryption_client=REQUIRED." This tells the JDBC connection that it needs encrypted communication with the server to work properly.