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Sets the networking protocol used for Greenplum Database interconnect traffic. With the TCP protocol, Greenplum Database has an upper limit of 1000 segment instances - less than that if the query workload involves complex, multi-slice queries.

The UDP protocol allows for greater interconnect scalability. Note that the Greenplum Database software does the additional packet verification and checking not performed by UDP, so reliability and performance is equivalent to TCP.

UDPIFC specifies using UDP with flow control for interconnect traffic. Specify the interconnect flow control method with gp_interconnect_fc_method.

Note: The Greenplum Database interconnect types TCP and UDP are deprecated. In the next major release, only the UDPIFC interconnect type will be supported by Greenplum Database.
Value Range Default Set Classifications



UDPIFC local