# Differences using the Connection.setReadOnly method

In embedded mode, when the `Connection.setReadOnly` method has `true` as the parameter, the connection is marked as a read-only connection. When you use the Network Server, the `Connection.setReadOnly(true)` method is ignored, and the connection is not marked as a read-only connection.

Parent topic: Differences between running Derby in embedded mode and using the Network Server
Related concepts
Differences between the embedded client and the network client driver
Updatable result sets
Differences in JDBC methods