Distributed query processing (DQP) improves performance in IQ multiplex configurations by spreading work across multiple nodes in the cluster.
The server is part of a multiplex where servers have established MIPC connections. Servers establish these connections automatically on startup. To verify, run sp_iqmpxinfo and look for active status in the mipc_public_state column.
If you configured private interconnect on the multiplex and expect DQP to run on private interconnect, run sp_iqmpxinfo and look for active status in the mipc_private_state column.
Not all users connecting to a logical server may need to have their workload distributed at all times. Use the distributed query processing options to enable or disable DQP for sets of users, and at the individual connection level. Use the dqp_enabled Login Policy option to enable/disable DQP for sets of users. Use the dqp_enabled temporary database option to enable/disable DQP at the individual connection level.