is javax.sql.DataSource thread safe?

Question

I am using the PostgreSQL 9.1 JDBC4 driver (postgresql-9.1-902.jdbc4.jar) in a Java EE application deployed in JBoss 7.

Can I assume that javax.sql.DataSource is thread-safe so that multiple threads can concurrently call the getConnection() method on it?

Answer 1

javax.sql.DataSource itself is an interface, so it is a specific to the implentation if it is thread-safe or not.

For the PostgresSQL driver, the official documentation changed over time. While older documentation (snapshot) wrote it is, the current documentation writing the opposite, stating that is not thread-safe.