• Data Warehouse Service

dws
  1. Help Center
  2. Data Warehouse Service
  3. Developer Guide
  4. Setting Configuration Parameters
  5. Appendix B: GUC Parameter Description
  6. Connection and Authentication
  7. Communication Library Parameters

Communication Library Parameters

This section describes how to set parameters and value ranges about the communication library.

comm_debug_mode

Parameter description: Debug mode switch of the TCP proxy communication library or SCTP communication library. The detailed log about the communication layer is printed when the switch is set to on.

When the switch is set to on, the mount of printed logs is huge, adding extra overhead and reducing database performance. Therefore, the switch is set to on only in the debug mode.

This parameter is a USERSET parameter. Set it based on instructions provided in Table 1.

Value range: Boolean

  • on indicates the detailed debug log of the communication library is printed.
  • off indicates the detailed debug log of the communication library is not printed.

Default value: off

comm_timer_mode

Parameter description: Timer mode switch of the TCP proxy communication library or SCTP communication library. The timer log in each phase of the communication layer is printed when the switch is set to on.

When the switch is set to on, the mount of printed logs is huge, adding extra overhead and reducing database performance. Therefore, the switch is set to on only in the debug mode.

This parameter is a USERSET parameter. Set it based on instructions provided in Table 1.

Value range: Boolean

  • on indicates the detailed timer log of the communication library is printed.
  • off indicates the detailed timer log of the communication library is not printed.

Default value: off

comm_stat_mode

Parameter description: Stat mode switch of the TCP proxy communication library or SCTP communication library. The statistics about the communication layer is printed when the switch is set to on.

When the switch is set to on, the mount of printed logs is huge, adding extra overhead and reducing database performance. Therefore, the switch is set to on only in the debug mode.

This parameter is a USERSET parameter. Set it based on instructions provided in Table 1.

Value range: Boolean

  • on indicates the statistics log of the communication library is printed.
  • off indicates the statistics log of the communication library is not printed.

Default value: off