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  1. #1
    Join Date
    Mar 2009
    Posts
    22

    Unanswered: Reg:Informix Connection Problem

    Dear All,

    We are running performance testing for our application. When we run for 400 users, it failed in lot of use cases.

    While i go through the log, informix is not allowing new connection.
    Physical memory of the server is 20GB RAM.

    Error in Log;

    08:01:08 hpkaioaddseg: ASYNC_ADDSEG failed, errno = 11 Resource temporarily unavailable
    08:01:08 create_tcb: cannot allocate memory

    08:01:08 (2030) connection rejected - too many users, or invalid user name
    08:01:08 listener-thread: err = -25571: oserr = 0: errstr = : Cannot create a user thread.


    Configuration of nettype;

    NETTYPE soctcp,8,300,NET
    NETTYPE ipcshm,1,300,CPU

    Segmant summary:

    R :- 6329466880
    V :- 6144000000
    M :- 3248128
    Total :- 12476715008


    Please give me some idea to solve this issue. Is it because of configuration or web logic connection pool?

    Thanks,
    RV

  2. #2
    Join Date
    Feb 2009
    Posts
    51
    Post onconfig and output onstat -g seg at the time of the problem.

  3. #3
    Join Date
    Mar 2009
    Posts
    22
    # Shared Memory Parameters

    LOCKS 6000000 # Maximum number of locks
    NUMAIOVPS 2 # Number of IO vps
    PHYSBUFF 512 # Physical log buffer size (Kbytes)
    LOGBUFF 32 # Logical log buffer size (Kbytes)
    CLEANERS 128 # Number of buffer cleaner processes
    SHMBASE 0x0 # Shared memory base address
    SHMVIRTSIZE 6000000 # initial virtual shared memory segment size
    SHMADD 2000000 # Size of new shared memory segments (Kbytes)
    SHMTOTAL 0 # Total shared memory (Kbytes). 0=>unlimited
    CKPTINTVL 300 # Check point interval (in sec)
    TXTIMEOUT 300 # Transaction timeout (in sec)
    STACKSIZE 512 # Stack size (Kbytes)

    BUFFERPOOL size=2K,buffers=2500000,lrus=512,lru_min_dirty=1.0 00000,lru_max_dirty=2.000000


    onstat -g seg output:-

    Segment Summary:
    id key addr size ovhd class blkused blkfree
    6717446 1382107137 c000000003eac000 6329466880 618304 R* 1545276 4
    425991 1382107138 c00000017d2ec000 6144000000 188240 V 1483967 16033
    360456 1382107139 c0000002eb64c000 3248128 848 M 792 1
    Total: - - 12476715008 - - 3030035 16038

    (* segment locked in memory)

    Regards,
    RV

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