From: SMTP%"dwing@uh01.Colorado.EDU" 16-DEC-1993 09:58:27.90 To: EVERHART CC: Subj: Re: RMS Indexed file problem X-Newsgroups: comp.os.vms Subject: Re: RMS Indexed file problem Message-ID: <1993Dec14.152840.508@buckie.hsc.colorado.edu> From: dwing@uh01.Colorado.EDU (Dan Wing) Date: 14 Dec 93 15:28:39 MDT Reply-To: dwing@uh01.Colorado.EDU Organization: Ski Bum Wanna-be, Incorporated Nntp-Posting-Host: buckie.hsc.colorado.edu Lines: 57 To: Info-VAX@CRVAX.SRI.COM X-Gateway-Source-Info: USENET In article <2ehusc$l64@genesis.ait.psu.edu>, jeo@psulias.psu.edu writes: >We are running applications writing to indexed files and are seeing a random >problem of garbage being written to the file with a consistent record size >of 30004. We have put checks in all of our programs that access the file to >display messages to the console for record sizes greater than 20000. TO date >we have not had any messages displayed from our programs yet we still continue >to have these garbage records appear. We are running VMS v6.0 on a cluster >of a VAX 10630 and 9420. Any help would be appreciated. Try this to see what is going on. It might help (be careful with it, though -- you can see a lot of information fly by, and it requires privileges to use it, and could possibly crash your system). This command should exist on AXP and in VMS V6.0, but I'm not 100% sure of either.... -Dan Wing, Systems Administrator, University Hospital, Denver dwing@uh01.colorado.edu or wing@eisner.decus.org ----- SET WATCH The following *undocumented* (and unsupported) DCL command allows you to monitor the VMS file system opening, closing, reading, and writing to files. This may be useful when running programs to determine the filenames opened and read/write counts to these files. Because this is an undocumented command, it should not be included in any production programs or .COM files. $ SET WATCH FILE/CLASS=(option[,...]) where "option" is one or more of the following options. If you specify more than one option, enclose the options in paraenthesis and separate the options with commas. NONE Disable all watching QUOTA_OPERATIONS Disk quota changes MAJOR_FUNCTION Opens, closes, reads, writes ATTACHED DUMP FIB (File Information Block) dump DIRECTORY_OPERATIONS All functions on directories CONTROL_FUNCTION Protection changes ATTRIBUTES Changes to file attributes ALL All options listed above Useful information may be obtained by using the option MAJOR_FUNCTION and DIRECTORY_OPERATIONS. Most of the other options display a lot of information which may not be helpful for most tasks. This command requires CMEXEC privilege. It activates image SETWATCH.EXE in SYS$SYSTEM:. If you want users without CMEXEC to be able to use it, install SETWATCH.EXE with CMEXEC privilege -- no side effects have been found in doing this. Jerry Leichter mentioned (in INFO-VAX) that SET WATCH has the potential to crash your system.