How to get rid of The RPC server is unavailable Error?

Hi everyone,

I have a main folder with 10 subfolders in it. Each subfolder has 200 subfolders within them. in each of these 200 subfolders, I have 4 .csv files. I created a loop that the code opens a subfolder, do what I want and then move to the next one as follows

D = 'C:\Users\....\Data\'
S1 = dir(fullfile(D,'*'));
N1 = setdiff({S1([S1.isdir]).name},{'.','..'});         
A = {};
B = {};
C = {};
for kk = 1 : 10
    kk
    D1 = fullfile(D, N1{kk});
    S2 = dir(fullfile(D1,'*'));
    N2 = setdiff({S2([S2.isdir]).name},{'.','..'});
    for ii = 1 : 200
        ii
        T1 = dir(fullfile(D1,N2{ii},'*'));
        C = {T1(~[T1.isdir]).name};
        for jj = 1 : numel(C)
            if jj == 1
                F = fullfile(D1,N2{ii},C{jj});
                [n,~,~] = xlsread(F);
            elseif jj == 2
                F = fullfile(D1,N2{ii},C{jj});
                m  = csvread(F);
            elseif jj == 3
                F = fullfile(D1,N2{ii},C{jj});
                p   = csvread(F);
            elseif jj == 4
                F = fullfile(D1,N2{ii},C{jj});
                q = csvread(F);
            end
        end
        A{kk, ii} = complex(p, m);
        B{kk, ii} = q(:,1) - q(1,1);
        C{kk, ii} = n(2);
    end
end

when I run the code, I've got the "RPC server is unavailable" error on kk=2, ii =21. However, when I check the code manualy for kk=2, ii =21 it works perfectly. Any idea how I can get rid of this error? How I can improve the code to run faster? Any input would be greatly appreciated.

Answer 1

[Walter Roberson]

I can think of three potential solutions:

• put a pause after the xlsread(); or
• instead of using xlsread() look in the file exchange for xlsread1(); or
• switch to readtable() instead of xlsread(). Note that if you switch to readtable() then you can probably use it or readmatrix() instead of the csvread().

That is, I suspect that the connection to the excel server is not ready in time, so you either need to slow down access or use the excel server differently or avoid using the excel server.

[Susan]

Thank you so much for your reply! I put a pause after the xlsread for 3sec, i.e., pause(3). But it wasn't able to solve the issue.

However, when I switched to readtable instead of xlsread(), it works perfectly.

Thanks again for your help!

Answer 2

[Samuel Gray]

https://www.mathworks.com/help/matlab/ref/comserver.html