• Rename the dump file to SYS$COMMON:[SYSEXE]SYSDUMP-COMMON.DMP or create a new dump file named SYSDUMP-COMMON.DMP in SYS$COMMON:[SYSEXE].
• For each satellite that is to share the dump file, do the following:
  • Create a file synonym entry for the dump file in the system-specific root. For example, to create a synonym for the satellite using root SYS1E, enter a command like the following:

$ SET FILE SYS$COMMON:[SYSEXE]SYSDUMP-COMMON.DMP -
_$ /ENTER=SYS$SYSDEVICE:[SYS1E.SYSEXE]SYSDUMP.DMP

• Add the following lines to the satellite’s MODPARAMS.DAT file:

DUMPFILE = 0
DUMPSTYLE = 0 (or DUMPSTYLE = 1)

• Rename the old system-specific dump file on each system that has its own dump file:

$ RENAME SYS$SYSDEVICE:[SYSn.SYSEXE]SYSDUMP.DMP .OLD
The value of n in the command line is the root for each system (for example, SYS0 or SYS1).
Rename the file so that the operating system software does not use it as the dump file when the system is rebooted.

• Reboot each node so it can map to the new common dump file. The operating system software cannot use the new file for a crash dump until you reboot the system.
• After you reboot, delete the SYSDUMP.OLD file in each system-specific root. Do not delete any file called SYSDUMP.DMP; instead, rename it, reboot, and then delete it.