APAR status |
Closed as program error.
| Error description
Thru investigation it was found that the firewall
between the webserver and appserver was accepting plugin
connections and therefore the plugin was not failing over once
the connection was closed when the appserver was in fact down. Local fixProblem summary
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* USERS AFFECTED: WebSphere Application Server users *
* running with multiple clones with *
* a proxy firewall. *
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* PROBLEM DESCRIPTION: Failover loses requests on multiple *
* clone appserver with proxy firewall *
****************************************************************
* RECOMMENDATION: *
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The proxy firewall being used would accept connections
for the application server even if the application server
was down. This extended the point at which the appserver
problem was detected to the point the first read was done
on the bogus connection, which was well past the point that
the failover mechanism could intervene. Problem conclusion
The failover and the OSE connection handshaking was modified
so the appserver problems are detected early enough to allow
the failover to kick in, even in the face of these proxy
firewalls that accept connections for dead appservers. Temporary fixComments
APAR information | APAR number | PQ60991 | Reported component name | WAS ADVANCED SU | Reported component ID | 5648C8402 | Reported release | 350 | Status | CLOSED PER | PE | NoPE | HIPER | NoHIPER | Submitted date | 2002-05-09 | Closed date | 2002-05-31 | Last modified date | 2002-05-31 |
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:APAR is sysrouted FROM one or more of the following:
Modules/Macros APAR is sysrouted TO one or more of the following:Modules/Macros
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Fix information |
Fixed component name | WAS ADVANCED SU | Fixed component ID | 5648C8402 |
Applicable component levels | R350 PSY | UP |
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