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Typical error message found in the LUSAS Solver text output file (*.OUT):

***DATABASE ERROR*** ERROR DURING I/O , IOSTAT= 413


Causes & links to solutions 

This means that a file is already connected to a different unit. The program tried to connect an already connected file to a new unit. A file can be connected to only one unit at a time. This message is issued when the error condition is not one of the more common conditions for which specific error messages are provided. It is typically a result of one or more of the following:

  1. The results file from a previous analysis is still open in Modeller when Solver attempts to write a new results file.  Close the results file in Modeller before running the analysis.
  2. File being solved over a network connection.  Save the file in a suitable location
  3. The file may be locked by another application. This can occur with some backup programs and has also been known to occur with anti-virus checkers.  Close other applications
  4. For a multi-step analysis such as nonlinear or dynamic, the results file has been closed by Modeller, but Solver does not recognise that the file has been released. This causes a file violation error when solver tries to write a new set of results. This would be the result of a corruption of the file during the analysis because of network problems. If this is the case it will be remedied by running the analysis again.

Still encountering problems?  Try the database error checklist


More on where to store your model and *.DAT files

More on where to locate temporary files


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