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Former Member
Jul 06, 2009 at 07:57 AM

Help for "ICM max connection" problem !

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Hi there,

we're running EP 7.0 (abap+java dual stack ) on HP-UX 11.31 for about 5000~6000 users.

-one db+ci server and three ap servers

Smetimes I'm getting message in 'dev_icm'

[Thr 67] *** ERROR => IcmConnPoolNewEntry: upper limit of desc in pool reached (used=500/max=500) [icxxpool_mt. 1664]

I wonder why this messages are showing

one of AP server's instance parameters are ...

icm/HTTP/j2ee_0 = PREFIX=/,HOST=localhost,CONN=0-500,PORT=5$$00

icm/server_port_0 = PROT=HTTP,PORT=80,TIMEOUT=30,PROCTIMEOUT=600,EXTBIND=1

icm/max_conn = 16384

icm/max_sockets = 16384

rdisp/max_wprun_time = 600

icm/req_queue_len = 6000

icm/min_threads = 100

icm/max_threads = 250

mpi/total_size_MB = 500

mpi/max_pipes = 20500

rdisp/tm_max_no = 3000

rdisp/max_arq = 3000

gw/max_conn = 3000

rdisp/max_comm_entries = 3000

gw/max_sys = 3000

gw/max_overflow_size = 50000000

gw/max_shm_req = 500

-> I found although I set 'icm/max_conn' parameter to 16384 ( above 500 ),

the system did not establish more than '500' connections.

I guess 'icm/HTTP/j2ee_0... 'CONN=0-500' parameter value might force the connection go below '500'.

-> If so,

- what should I do to keep free ICM connection as many as possible?

regularly restart j2ee instance?

regularly restart abap process with rdisp/wp_auto_restart?

...

- what should I do to make the ICM establish more connections over 500

increase 'CONN=0-500' to 'CONN=0-1000' ?

...

Thanks in advance~

Edited by: Nam-Moo BC on Jul 6, 2009 9:59 AM