EXTRA STEP: Checking for ISM
Unfortunately, before Solaris 8 it isn’t easy to tell whether a shared memory segment is using ISM (described in “Intimate Shared Memory” on page 24). As of Solaris 8, the ipcs utility includes a -i parameter that shows how many shared memory segments have been attached as ISM (the ISMATTCH column), and pmap shows whether a particular process has attached a shared memory segment as ISM (ism will appear immediately before the shmid parameter). For Solaris 7 and earlier Solaris releases, the procedures shown in Figure 21.13 through Figure 21.17 can be used to answer the question.
Figure 21.13 is based on a server running an Oracle database.
Figure 21.13. ps trace of Oracle shadow process
UID PID PPID C STIME TTY ... |
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