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Conference orarep::nomahs::dbms

Title:VAX DBMS
Notice:THIS NOTESFILE IS NOT A FORMAL SUPPORT CHANNEL
Moderator:SCARY::CHARLAND
Created:Thu Feb 20 1986
Last Modified:Tue Jun 03 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2642
Total number of notes:11044

2591.0. "Orphaned ruj's" by M5::MGULLIKS (Marilyn I. Gulliksen - Worldwide Support) Fri Jan 24 1997 16:48

Greetings,

I have a customer who was seeing lots (1500) of orphaned ruj's when running 
DBMS V5.1-11.  (They have been getting the standard upgrade speech.)

Finally, this customer is starting to upgrade to V6.1A (I'm double checking
to see if they have eco1).  They are quite happy because the number of 
orphaned ruj's has drastically decreased.  They currently have about 20.

The question of the day is "Could you ask engineering in what instance these
orphaned rujs get generated?"

I've explained that they could have been created and the user terminated 
prior to the root file being updated.  I've asked for dumps of the aij's.
(Double-checking to see if the ruj's are empty.)

Besides a system crash and subsequent database restore, is there any other
known reason an orphaned ruj can occur?

Thanks,

Marilyn
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2591.1HOTRDB::PMEADPaul, pmead@us.oracle.com, 719-577-8032Fri Jan 24 1997 19:2016
>I've explained that they could have been created and the user terminated 
>prior to the root file being updated.
    
    I believe that is the only way known at this time.  Assuming that they
    have high-water marking enabled on their RUJ disk they should find the
    RUJ files are "invalid" (missing proper header record) or do not
    contain any data records.  
    
    If they do not have high-water marking enabled then it is possible to
    have the VMS file system assign a process the uninitialized disk space
    that happened to have been used for a previous RUJ file.  That can be
    confusing since when dumped the RUJ may contain a valid header and have
    data records, except it is old and for a different process (PID is
    different).  This isn't a problem since its filename was never stored
    in the rootfile, but it can be alarming to anyone not familiar with
    this little "feature".
2591.2M5::MGULLIKSMarilyn I. Gulliksen - Worldwide SupportWed Jan 29 1997 13:126
Thanks Paul.

The customer and I are both in class this week.  Hopefully, she'll be 
satisfied the response.  If not I'll probably hear about it later this year.

Marilyn