Skip to Content
avatar image
Former Member

ERROR => shmat(11698206,0x(nil),SHM_RND) (12: Cannot allocate memory)

I am do a clean installation of NetWeaver 7.0 SR3. When it comes to the start instance phase, the WP could not be started. I have checked the dev_w0, there is an error says:

M  SHM_PRES_BUF (addr: 7fb6acf8e000, size: 4400000)

I  *** ERROR => shmat(11698206,0x(nil),SHM_RND) (12: Cannot allocate memory) [shmux.c      1593]

M  *** ERROR => ThShMCreate: ShmCreate SHM_ROLL_AREA_KEY failed [thxxhead.c   2757]

M  *** ERROR => ThIPCInit: ThShMCreate [thxxhead.c   2172]

M  ***LOG R19=> ThInit, ThIPCInit ( TSKH-IPC-000001) [thxxhead.c   1567]

I have 4 GB RAM and 20GB swap space, so I think this is not due to memory bottle neck.

Can anyone help me on this? Thanks in advance!

Regards,

Roy Liu

Add comment
10|10000 characters needed characters exceeded

  • Get RSS Feed

6 Answers

  • Dec 19, 2013 at 03:02 AM

    Hi,

    The error may be caused by OS level memory limit.

    eg. kernel.shmall and kernel.shmmax in Linux.

    Thanks.

    Jim

    Add comment
    10|10000 characters needed characters exceeded

  • avatar image
    Former Member
    Dec 19, 2013 at 04:41 AM

    Hi,

    can you please tell me the OS.

    It looks that this issue is with the shared roll.

    did you run below command and see if you get some error.

    sappfpar check pf=<instance profile>

    Can you please tell me the value of this parameter.

    1. rdisp/ROLL_SHM

    Thanks

    Rishi Abrol

    Add comment
    10|10000 characters needed characters exceeded

  • Dec 19, 2013 at 04:49 AM

    Hi Roy

    Just restart the system and then try again

    Regards

    Ram


    Add comment
    10|10000 characters needed characters exceeded

  • Dec 19, 2013 at 06:04 AM

    Hi Roy,

    Please stop the system clean the shared memory using ipc clean command , if possible reboot the host .

    Then start the system , it should work , if still face issue please provide dev_w* dev_disp log.

    Best Regards,

    Atul

    Add comment
    10|10000 characters needed characters exceeded

  • avatar image
    Former Member
    Dec 19, 2013 at 07:24 AM

    Hi all,

    Thanks for all your answers.  I have though about OS level parameters, and tried to change shmmax and shmall  some times, but it did work. Currently, the two parameters are as follows:

    cat /proc/sys/kernel/shmmax

    18446744073709551615

    cat /proc/sys/kernel/shmall

    1152921504606846720

    I have tried to restart the host a lot of times and also tried cleanipc, it seems not work

    And the sappfpar  results are as follows:

    ================================================================================

    ==   Checking profile:     /usr/sap/S01/SYS/profile/S01_DVEBMGS00_linux-7zr7

    ================================================================================

    ***WARNING: Unexpected parameter: rslg/new_layout =9

    ***WARNING: Unexpected parameter: service/protectedwebmethods =SDEFAULT

    ***WARNING: Unexpected parameter: ssl/ssl_lib =/usr/sap/S01/DVEBMGS00/exe/libsapcrypto.so

    Shared memory disposition overview

    ================================================================

    Shared memory pools

    Key:   10  Pool                        

                Size configured.....:   136000000 ( 129.7 MB)

                Size min. estimated.:   132565864 ( 126.4 MB)

                Advised Size........:   136000000 ( 129.7 MB)

    Key:   40  Pool for database buffers   

                Size configured.....:   112000000 ( 106.8 MB)

                Size min. estimated.:   109175040 ( 104.1 MB)

                Advised Size........:   112000000 ( 106.8 MB)

    Shared memories inside of pool 10

    Key:       11  Size:      500000 (   0.5 MB) Factory calender buffer     

    Key:       12  Size:     6000000 (   5.7 MB) TemSe Char-Code convert Buf.

    Key:       13  Size:    60500000 (  57.7 MB) Alert Area                  

    Key:       14  Size:     4400000 (   4.2 MB) Presentation buffer         

    Key:       16  Size:       22400 (   0.0 MB) Semaphore activity monitoring

    Key:       17  Size:    11142696 (  10.6 MB) Roll administration         

    Shared memories inside of pool 40

    Key:       42  Size:     7232992 (   6.9 MB) DB TTAB buffer              

    Key:       43  Size:    32534392 (  31.0 MB) DB FTAB buffer              

    Key:       44  Size:     7958392 (   7.6 MB) DB IREC buffer              

    Key:       45  Size:     4886392 (   4.7 MB) DB short nametab buffer     

    Key:       46  Size:       20480 (   0.0 MB) DB sync table               

    Key:       47  Size:     3073024 (   2.9 MB) DB CUA buffer               

    Key:       48  Size:      500000 (   0.5 MB) Number range buffer         

    Key:       49  Size:     2968344 (   2.8 MB) Spool admin (SpoolWP+DiaWP) 

    Shared memories outside of pools

    Key:        1  Size:        2500 (   0.0 MB) System administration       

    Key:        2  Size:     5944564 (   5.7 MB) Disp. administration tables 

    Key:        3  Size:    66864000 (  63.8 MB) Disp. communication areas   

    Key:        4  Size:      513448 (   0.5 MB) statistic area              

    Key:        6  Size:   319488000 ( 304.7 MB) ABAP program buffer         

    Key:        7  Size:       14838 (   0.0 MB) Update task administration  

    Key:        8  Size:   268435556 ( 256.0 MB) Paging buffer               

    Key:        9  Size:   268435556 ( 256.0 MB) Roll buffer                 

    Key:       18  Size:     3670116 (   3.5 MB) Paging adminitration        

    Key:       19  Size:    30000000 (  28.6 MB) Table-buffer                

    Key:       30  Size:       20480 (   0.0 MB) Taskhandler runtime admin.  

    Key:       31  Size:     9612000 (   9.2 MB) Dispatcher request queue    

    Key:       33  Size:    10240000 (   9.8 MB) Table buffer, part.buffering

    Key:       34  Size:    33554432 (  32.0 MB) Enqueue table               

    Key:       41  Size:    25010000 (  23.9 MB) DB statistics buffer        

    Key:       51  Size:    18000000 (  17.2 MB) Extended memory admin.      

    Key:       52  Size:      180000 (   0.2 MB) Message Server buffer       

    Key:       54  Size:     4202496 (   4.0 MB) Export/Import buffer        

    Key:       55  Size:        8192 (   0.0 MB) Spool local printer+joblist 

    Key:       57  Size:     1572864 (   1.5 MB) Profilparameter in shared mem

    Key:       58  Size:        4096 (   0.0 MB) Enqueue ID for reset        

    Key:       62  Size:    85983232 (  82.0 MB) Memory pipes                

    Key:       63  Size:      409600 (   0.4 MB) ICMAN shared memory         

    Key:       64  Size:     4202496 (   4.0 MB) Online Text Repository Buf. 

    Key:       65  Size:     4202496 (   4.0 MB) Export/Import Shared Memory 

    Key:       81  Size:       21760 (   0.0 MB) Security Audit Log          

    Key:     1002  Size:      400000 (   0.4 MB) Performance monitoring V01.0

    Key: 58900100  Size:        4096 (   0.0 MB) SCSA area                   

    Nr of operating system shared memory segments: 30

    Shared memory resource requirements estimated

    ================================================================

    Total Nr of shared segments required.....:         30

    System-imposed number of shared memories.:       1000

    Shared memory segment size required min..:  319488000 ( 304.7 MB)

    Currently available maximum segment size.: 5570035712 (5312.0 MB)

    Swap space requirements estimated

    ================================================

    Shared memory....................: 1343.7 MB

    ..in pool 10  126.4 MB,   97% used

    ..in pool 40  104.1 MB,   97% used

    ..not in pool: 1107.2 MB

    Processes........................:  257.8 MB

    Extended Memory .................: 4096.0 MB

    ------------------------------------------------

    Total, minimum requirement.......: 5697.5 MB

    Process local heaps, worst case..: 1907.3 MB

    Total, worst case requirement....: 7604.8 MB

    Errors detected..................:    0

    Warnings detected................:    3

    Thanks : )

    Roy

    Add comment
    10|10000 characters needed characters exceeded

  • avatar image
    Former Member
    Jan 20, 2016 at 04:43 PM

    hi,

    did you fix the issue at the end?

    if so, how?

    Add comment
    10|10000 characters needed characters exceeded