End users experiencing delayed and dropped connections to data base

(Doc ID 2258535.1)

Last updated on MAY 07, 2017

Applies to:

Exadata X5-2 Half Rack - Version All Versions and later
Information in this document applies to any platform.

Symptoms

End clients experiencing dropped and delayed connections to the data base.  tcpdump on eth0 showed that the tns traffic was using
the management .

 

eth0 tcpdump shows production TNS traffic from remote subnets and connecting the adm02 10.25.64.91

Time Source Destination Protocol Length Info
400 0.000 10.25.92.78 10.25.64.91 TNS 67 Request, Data (6), Data
401 0.000 10.25.64.91 10.25.92.78 TNS 67 Response, Data (6), Data
408 0.000 10.25.92.78 10.25.64.91 TCP 60 41645 > ncube-lm [ACK] Seq=14 Ack=14 Win=169 Len=0
409 0.000 10.25.92.78 10.25.64.91 TNS 94 Request, Data (6), Data
414 0.000 10.25.64.91 10.25.92.78 TCP 1514 [TCP segment of a reassembled PDU]
415 0.000 10.25.64.91 10.25.92.78 TNS 88 Response, Data (6), Data
420 0.000 10.25.92.78 10.25.64.91 TCP 60 41645 > ncube-lm [ACK] Seq=54 Ack=1508 Win=191 Len=0
427 0.000 10.25.92.78 10.25.64.91 TNS 188 Request, Data (6), Data
435 0.000 10.25.64.91 10.25.92.78 TNS 188 Response, Data (6), Data
437 0.000 10.25.92.78 10.25.64.91 TNS 178 Request, Data (6), Data
438 0.000 10.25.64.91 10.25.92.78 TNS 184 Response, Data (6), Data
444 0.000 10.25.92.78 10.25.64.91 TCP 1514 [TCP segment of a reassembled PDU]<-------------------------------Full packets
445 0.000 10.25.92.78 10.25.64.91 TCP 1514 [TCP segment of a reassembled PDU]

Cause

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