MCU Utilities §

MCU is designed to (only) accept MARC data that has been pre-processed by PLP. It is not possible to load a MARC file into MCU from scratch, even if that file appears to be organized into groups of matching records.  

Further, even if the file you want to load has been processed by PLP, the attempt will fail if the program cannot locate any additional option files it needs to initialize the session. This situation can arise if you have changed the options, if any PLP files have been moved or deleted, if you are trying to load a session that was produced on another computer, or the like. 

The Utilties menu presents a few options for dealing with problems arising from the second paragraph above. There are three relevant choices: 

  • Add a session 
  • Rebuild a session 
  • Create a session 

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Add a session §

Use this option to add a session to the 'Resume session' menu when, for some reason–typically because you did not start MCU after the PLP run–the session ID is missing from the list. 


Simply enter the session ID and select the corresponding run type (PLP or Self-PLP).  

If MCU can locate the session data, it will add the ID to the Resume menu list, and you will then be able to select it and begin the session. 

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Rebuild a session §

Use this option when the session is present in the 'Resume' menu but an attempt to create it has failed or produced an error message. When this happens, it is usually possible to repair the session so that it can be started again in MCU; however, it may not be possible to recover all of the decisions you have made in previous work on the session. Therefore, read all warning messages carefully when using this dialog.1) 


To rebuild or repair a session, you need five pieces of information: 

  1. the Session ID 
  2. the MARC filename as processed by PLP 
  3. the Library Load profile used in the processing 
  4. the PLP Match Rules used in the processing 
  5. and the type of PLP run 

If you have a session Id, enter in the top box and press 'Check'. MCU will look around and try to fill in all the other boxes for you. But if it cannot, you will have to supply them. 

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Create a session §

This option is similar to Rebuild, with the exception that this utility will not ask you for a Session Id, the program assumes one does not exist. Obviously, if you are trying to resuscitate a session that has gone missing or become mangled, this is not the option to choose–use 'Rebuild a session' in that event. 


To create a session from scratch, you need the following pieces of information: 

  1. the MARC filename as processed by PLP 
  2. the Library Load profile used in the processing 
  3. the PLP Match Rules used in the processing 
  4. and the type of PLP run 

Enter each of the first three filenames by pressing the […] button on the left. When you do this, the program will open a windows navigation dialog, and after you select the file, MCU will check it to make sure the selection makes sense. 

When all of the filenames have been entered onto the form, MCU will try to generate a new session (just as when you are running PLP and the MCU pop-up window appears). 

Note: in some cases, you may be able to use the default Library Load profile and default PLP Match Rules when creating a new session. It ultimately depends on the objective you have. If you are creating a session to take advantage of the MCU interface to look at matching record groups, then the choice of option files is not critical. If, on the other hand, you plan to do some actual merge work and/or decision-making, then it is more important to select the option files that were used in the PLP run. 

1) Au contraire, if you have not performed any signifcant work in the session, the loss of previous decisions will not be anything to worry about
mcu/utilities.txt · Last modified: 2013/04/27 09:09 (external edit)
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