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Connections including Local using TCP/IP is intermittently slow (Doc ID 2480761.1)

Last updated on JULY 06, 2021

Applies to:

Oracle Net Services - Version and later
Information in this document applies to any platform.


Connections are intermittently slow when using TCP and the Listener.

Timing shows:

a) simply time test -->

This is occurring at a Network Read (nttrd).
However, not ALL Network Reads, but scattered across nttrd functions (some are normal, some are 10x slower).
Because there is such a variance in returning network read data, queries that should take a few seconds are taking 10x to 100x longer.


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