Originally posted by: SystemAdmin

After upgrading to 5300-04 our socket connections used by certain applications are getting closed after 12 hours of operation. These sockets are not idle and it always occurs after 12 hours + 5 to 15 minutes.
This behaviour is occuring across several different servers on completely different networks so it couldn't be related to network hardware.
Has anyone else seen this sort of behaviour before ?

I thank to you.
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Originally posted by: cd3lgado

Hi

I'm having the same behavior with a LPAR running AIX 5.3 TL04 with Websphere IVR and some other SW. Every night we have disconnections of the TCPIP Stacks and then services are down.

How about installing 5.3 TL05+CSP availables ??

Or just the filesets concerned to tcpip communications?

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Originally posted by: Robert_Willcox

There is a new APAR for 5.3 Service Pack (SP) 3, released last month that could be the problem here. We have a similar situation and haven't installed it at our clients yet. But am bringing it up to converse w/ the experts. The APAR:
IY89429: AIX STOPS RESPONDING TO KEEPALIVES 06/11/01 PTF PECHANGE

A fix is available

Obtain fix for this APAR
APAR status
Closed as program error.

Error description

When a TCP connection goes idle, and remote end (need not
be AIX) sends TCP keepalives, AIX will respond to 5
keepalives and stop responding after that. However, it
will respond to FIN when closing the connection.

Local fix

Problem summary

***************************************************************
*USERS AFFECTED: *

• All users with the following filesets at these levels *
• bos.net.tcp.client 5.3.0.30
• bos.net.tcp.client 5.3.0.31
• bos.net.tcp.client 5.3.0.32
• bos.net.tcp.client 5.3.0.40
• bos.net.tcp.client 5.3.0.41
• bos.net.tcp.client 5.3.0.42
• bos.net.tcp.client 5.3.0.43
• bos.net.tcp.client 5.3.0.44
• bos.net.tcp.client 5.3.0.50
• bos.net.tcp.client 5.3.0.51
• bos.net.tcp.client 5.3.0.52

*************************************
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