Database-side JDBC procedures using non-nested connections

A database-side JDBC procedure can create a new connection instead of using a nested connection. Statements executed in the procedure will be part of a different transaction, and so can issue commits and rollbacks.

Such procedures can connect to a database different from the one to which the parent SQL statement that called it is connected. The procedure does not use the same transaction or Connection. It establishes a new Connection and transaction.

Note: If database-side JDBC procedures do not use nested connections, this means that they are operating outside of the normal DBMS transaction control, so it is not good practice to use them indiscriminately.
Related concepts
Database-side JDBC procedures and nested connections
Database-side JDBC procedures and SQLExceptions
User-defined SQLExceptions