10.5 ANALYZE New Qualifier: /SHARED_MEMORY In the event of system crashes, it may be necessary to save the contents of some or all of shared memory in addition to the memory that is local to the system that has crashed. This will be done either by writing shared memory to the sys- tem dump file using enhanced system dump code, or as a separate step using the DUMP/SHARED_MEMORY com- mand (which is the topic of a separate note). This can be done either after the failed system reboots, or at any time from another instance of OpenVMS in the same community. DUMP/SHARED_MEMORY writes to a separate file, not to the system dump file. Shared memory included in a system dump file will be analyzed with the existing ANALYZE/CRASH_DUMP com- mand. Shared memory dumped separately will be analyzed using the new command ANALYZE/SHARED_MEMORY. Syntax Description: The format is: ANALYZE/SHARED_MEMORY "file_name" where "file_name" is the name of the file created by the DUMP/SHARED_MEMORY command. The only existing ANALYZE qualifier (from ANALYZE /CRASH_DUMP) that may be used with ANALYZE /SHARED_MEMORY is /OVERRIDE. This qualifier, which is optional, allows limited access to the shared memory dump file when trying to establish the cause of a corrupted or incomplete dump. Qualifier description: The /SHARED_MEMORY qualifier indicates that a shared memory dump is to be analyzed. The SDA utility is invoked to perform the analysis, although it should be noted that only a limited set of SDA commands are relevant to shared memory dumps. Example: $ ANALYZE/SHARED_MEMORY GLX$SHARED_MEMORY.DMP OpenVMS (TM) Alpha system dump analyzer ...analyzing a Galaxy shared memory dump... shmSDA> EXIT $ This command invokes SDA to analyze the shared mem- ory dump file GLX$SHARED_MEMORY.DMP. (Note that this is the default file name created by DUMP/SHARED_ MEMORY).