There is no reason to clear the file. It will be overwritten on the next crash" should there be one. The SDA COPY command will "release" the crash as copied. This is important when there is no sysdump.dmp file and the pagefile is used as until the copy is done, the pages are not available for paging. Other than that release, there is no need to clear it out.
Is there a problem that you are trying to solve here?
"clearing out" the file really won't make any difference. If you have the sysdump.dmp file existing, the disk space is consumed. Whether or not the file contains a valid dump, won't effect the running system. In other words, clearing the file will not change any behavior. There really is no concept of "full" for this file.
If the concern is that the file is consuming disk space, you can avoid this by removing the file and rebooting. This will cause a dump to use the pagefile and with the SDA COPY mentioned before, the pagefile will be released. This way you can save the dump information onto another drive or tape for analysis later.
If this does not resolve the issue, please specify what the exact issue is so I can respond appropriately.
SET NOON disables error trapping, not error detection. Without SET NOON, a procedure stops executing when it encounters an error. With SET NOON enabled, errors will be detected and reported, but the procedure will continue to execute.
malmberg March 24 2018 Probably. More people hang out on the comp.os.vms newsgroup.
vaxpert March 23 2018 I have a PE42A and other Alpha system stuff for sale. I'm in So California. Any interest out there?
goodbyespy February 27 2018 To Prohorenko. Please, visit group OpenVMS in the ok.ru
peteherrera February 24 2018 How much does it cost to buy a complete OpenVMS hardcopy documentation set of the latest version
prohorenko February 17 2018 Please help to obtain the license on OpenVMS
malmberg December 12 2017 HPE only makes the most current version of OpenVMS Alpha / IA64 /VAX available to hobbyists. When I had access to the Alliance 1 program it was the same. No public downloads are allowed by HPE.
nmbonao December 08 2017 Is anybody knows OpenVMS 8.2 version downloadable version? or CD copy? Thank you very much
aarommes December 02 2017 Bitcoin and Blockchain enthusiasts ( plus distributed computing ) please connec / reply: http://www.openvmshobbyis t.com/forum/viewthread.ph p?forum_id=130&thread_id= 2991
malmberg September 10 2017 https://sourceforge.net/p /vms-ports/wiki/VMSInstal lation/ For the most part just use VMS 6.1 media instead of 7.3. But why run the older release?
DoeveR August 07 2017 Where can I find the write up on running VMS 6.1 using the simh emulator?
Bart March 20 2017 Happy to have found my password again!