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In transaction ST06 or OS07N, many issues can be resolved by clearing the shared memory and/or updating SAPOSCOL to the latest patch level, as follows:

1.  Updating SAPOCOL:

  • As described in note 19227, SAPOSCOL is downwards compatible with regards to the SAP system release.  This means, for example, you can use SAPOSCOL 720 on a 700 system.  If you experience SAPOSCOL issues it is recommended to use the latest SAPOSCOL release which is available for the highest available system release.  The procedure to install SAPOSCOL is described in note 19227: 

19227 – Open newest saposcol

548699 – FAQ: OS collector SAPOSCOL

710975 – FAQ: which saposcol should be used on AIX

2.  Clearing SAPOSCOL Shared Memory Segment:

  • Use the following procedure to delete the shared memory for SAPOSCOL:

saposcol -d            (start in dialog mode)
Collector > clean
Collector > quit
saposcol -k            (stops saposcol)
saposcol -d            (before restarting)
Collector > leave   (should get a message Shared memory deleted)
Collector > quit
cd /usr/sap/tmp
mv coll.put coll.old (rename the file; this stores the saposcol history data)
cd
saposcol                (start saposcol again)

  • If you cannot delete the shared memory segment with the above procedure then:
    • On Unix systems:
      • You can use ‘cleanipc 99 remove’ on O/S level (this will remove all the ipc objects for the system number 99, also for the SAPCCMSR agent).
      • You could alternatively use ‘ipcrm -M 0x00004dbe’, which will delete saposcol’s SHM, but not anything related to host agent.
    • On Windows:
      • You can use Microsoft Process Explorer to check the shared memory handle of saposcol and then try to find if another process holds it.  You should see that some disp+work has the handle.  Kill this and then you should be able to stop saposcol and clean the memory.
      • If you cannot delete the shared memory segment manually as above, then a sure method to delete the existing shared memory segment is a restart of the Windows OS.  If you are using CCMS patch collection 2011/3, a Windows restart should no longer be required.
  • After restarting SAPOSCOL again you can check the dev_coll file to see if the actual SAPOSCOL process also created the shared memory segment:

10:51:18 01.07.2011   LOG: Shared Memory Size: 532786.
10:51:18 01.07.2011   LOG: Shared Memory was created by process:5708   <<<<<<
10:51:21 01.07.2011   LOG: Collector daemon started
10:51:21 01.07.2011   LOG: read coll.put Fri Jul 01 10:47:12 2011
10:51:21 01.07.2011   LOG: Collector PID: 5708                                                  <<<<<<

On UNIX systems you can use the SAP OS command ‘showipc 99’ to report the defined IPC objects for the system area 99.

You can also use the UNIX command ‘ipcs –a’ to report some more detailed information, like owner and permissions about the defined IPC objects.

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