Connections to outside databases timeout

Thanks Hoolio, those kicked loose enough mental debris that I was able to address the behavior. Essentially the problem originated with the idle timeout setting on a FastL4 profile associated with a Wildcard virtual server--set by default to 5 minutes. If I increase that setting to 10 minutes, then the database connection problem goes away, as the idle timeout on the F5 side is now longer than that of the database servers themselves. Here's the entry from the bigip.conf for the new FastL4 profile, should anyone be interested;

 

 

profile fastL4 fastl4HiTimeout {

 

defaults from fastL4

 

reset on timeout enable

 

reassemble fragments disable

 

idle timeout 600

 

tcp handshake timeout 5

 

tcp close timeout 5

 

mss override 0

 

pva acceleration full

 

tcp timestamp preserve

 

tcp wscale preserve

 

tcp generate isn disable

 

tcp strip sack disable

 

ip tos to client pass

 

ip tos to server pass

 

link qos to client pass

 

link qos to server pass

 

rtt from client disable

 

rtt from server disable

 

loose initiation disable

 

loose close disable

 

software syncookie disable

 

}