Too many files open error when using load and save. fclose('all') doesn't solve the problem

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My code looks like this
sourcedir = 'C:\exampleDirectory\';
for i = 1:N
exampleFilename = [sourcedir, num2str(i),'.mat'];
structMatrix = load(exampleFilename);
exampleMatrix = structMatrix.savedMatrix;
% do something on exampleMatrix
fclose('all');
end
I have tried sticking an fclose('all') on both ends yet it inevitably runs into:
Error using load
Unable to read file 'exampleFilename'.
Too many files open.
same happens with a similar save function. I tried running it in for loop instead of parfor, the problem persists. I can restart matlab and the problem goes away for a while, only to return when the open file number hits the limit. It is likely happening from load and save functions, but I can't see the code of load and save functions, neither do they output fid for me to close specifically.
Thank you,
  2 个评论
Saumya Tiwari
Saumya Tiwari 2019-2-15
Sorry, I was going to respond to this comment and then I got distracted. I tried to check what is being opened, it was a lot of java .jar files. Not sure if that has any connection to the problem at hand. I didn't see my file names as being left open, which was what I was suspecting before.
The windows support tech asked me to disable all non- windows services to see if it helps with the problem. This error takes a few days to pop up, so it will be a while before I find out if this solved the issue.

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回答(1 个)

Andreas Kvalbein Fjetland
Try usinng the clear command instead of fclose. This worked in my test here.
clear('structMatrix')
  2 个评论
Saumya Tiwari
Saumya Tiwari 2019-2-1
编辑:Saumya Tiwari 2019-2-15
Thank you, seems like this solved the problem. I will update if I run into this again.
Edit: Did not work. I am clearing variables after load and save calls, no good.

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