Distributed unit of work

Distributed unit of work (DUW) allows access to multiple application servers within the same unit of work. Each SQL statement can access only one application server. Using distributed unit of work allows changes at multiple applications servers to be committed or rolled back within a single unit of work.

• Manage distributed unit of work connections
  The CONNECT, SET CONNECTION, DISCONNECT, and RELEASE statements are used to manage connections in the DUW environment.
• Check connection status
  If running in an environment where it is possible to have read-only connections, the status of the connection should be checked before doing committable updates. This will prevent the unit of work from entering the rollback required state.
• Cursors and prepared statements
  Cursors and prepared statements are scoped to the compilation unit and also to the connection.