construction of local coordinate systems

posted by carlo on Mon, 10/05/2010 - 12:17

When I try to construct local coordinate systems, using the command "CONSTRUCT COORDSYS RECTANGUL CS1 NODES n1 n2 n3", in the V72 file, I'm not able to complete the operation and iDiana displays the message "M042: Write access not permitted. Database locked by process < 3352 >". What does it mean? How can I solve the problem? Thanks.

Forums: 
DIANA

On Mon, 31/05/2010 - 08:28

The V72 file is locked as soon as a program starts to write to the file. When the program finishes it should unlock the database. This is done to avoid corruption of the file by multiple programs writing data simultaniously. In general this is the case when you have a DIANA job still running and are starting to post-process the results of the first few steps. DIANA has the file locked to write analysis results and keeps this locked until the job finishes. This means that all commands in iDiana that require to write data to the file will not work and show the "Database locked by process <...>" message. Of course after the analysis finishes you will be able to execute these commands.
 
In cases where the analysis terminated in an abnormal manner, the file is not unlocked properly. To solve this use the UTILITY UNLOCK command. Use this command with care. If the analysis is still running and you unlock the file then DIANA will not be able to write results for next steps to the file.

By Arno Wolthers

On Tue, 24/08/2010 - 12:05

I find it better to take a copy of the V72 database (whilst DIANA is still running) and put it into a separate directory. Unlock the database, and post-process there.
Alternatively wait for the analysis to finish, of course!
  

By Jeff Smith

On Mon, 19/12/2011 - 12:38

I do not manage to unlock the database either. I receive the error message "incorrect command". How can I solve out this problem ?
Regards

By Marion

On Fri, 13/01/2012 - 08:19

UTILITY UNLOCK is available in the index environment. So start idiana/femgv, unlock the database, then open the model.

By Arno Wolthers

On Wed, 09/03/2011 - 12:22

Dear Arno,

I have a similar problem and when I'm using the command (utility unlock)..iDiana is not recognizing the command and gives a message...incorrect command.

N.B:It´s highly important for me to get a solution for this problem because my model, which has about half a milion of elements, takes ONE WEEK to run.Due to this problem I'm not able,for example, to get the average stresses at nodes.

By aeam