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High Wait Event "Sql*Net Vector Data From Client" In The Output Of The Statspack Report (Doc ID 1311281.1)

Last updated on MARCH 03, 2020

Applies to:

Oracle Database - Enterprise Edition - Version and later
Information in this document applies to any platform.




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Getting a lot of wait events SQL*Net vector data from client on a standby-db when running statspack report.

For Example:

STATSPACK Statistics Report for Physical Standby

Database DB Id Instance Inst Num Startup Time Release RAC
~~~~~~~~ ----------- ------------ -------- --------------- ----------- ---
1896002354 <instance> 1 16-Mar-11 04:14 NO

Host Name: <hostname> Num CPUs: 17 Phys Memory (MB): 52,303

Snapshot Snap Id Snap Time Sessions Curs/Sess Comment
~~~~~~~~ ---------- ------------------ -------- --------- -------------------
Begin Snap: 946 31-Mar-11 16:30:01 291 1.3
End Snap: 947 31-Mar-11 17:30:01 243 1.7
Elapsed: 60.00 (mins)

Avg %Time Total Wait wait
Event Waits -outs Time (s) (ms)
---------------------------------------- ------------ ------ ---------- ------

Top 5 Timed Events Avg %Total
wait Call
Event Waits Time (s) (ms) Time
----------------------------------------- ------------ ----------- ------ ------
CPU time 11,767 48.4
SQL*Net vector data from client 1,485,667 4,923 3 20.2
parallel recovery control message reply 100,586 1,939 19 8.0
RFS write 652,007 1,507 2 6.2
db file sequential read 398,323 1,046 3 4.3




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