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error 25588 the application process cannot connect to online server

error 25588 the application process cannot connect to online server

error 25588 the application process cannot connect to online server

(OP)
Dear friends,

   I encountered the above error when more than 32 users accessing the application.  My onconfig.abc file has the following parameters:

DBSERVERNAME    abc             
DBSERVERALIASES abc_tcp
NETTYPE         ipcshm,1,64,CPU
NETTYPE         tlitcp,1,64,CPU
MULTIPROCESSOR  1
NUMCPUVPS       1
SINGLE_CPU_VP   1

   I am running Informix application on:
- SUN Solaris 5.6 with 2xCPU, 1DB RAM
- Informix IDS: 7.24 UC6
- Informix 4GL: 7.20 UD2
- Currently slightly more than 32 concurrent users

   I have read informix manual in order to find out if the above parameters had caused the above error, but not able to.  Below are my questions:
   1) Is the error -25577 caused by above parameters?  If not, what causes it?
   2) Do you recommend to increase NUMCPUVPS to 2 since I have 2 processors?  Does it improve performance by doing so?
   3) Can I have two different protocols (ipcshm & tlitcp) defined as same VP_class (CPU) but each protocol have 1 poll_threads, in fact, there is only one CPU VP?
   4) What are the suggested parameters for best performance?

   Thanks.

Best Regards

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