Linux switch user report Resource temporarily unavailable what to do

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Today, the first inspection at the beginning of the year, when entering grid to check dg, it was found that it could not be used. The specific error reports are as follows:

[root@testrac2 ~] # su-grid

Su: / bin/bash: Resource temporarily unavailable

As a result, you can see that there are too many processes and resources are limited. Check the following files:

Check resource limits:

[root@testrac2 ~] # cat / etc/security/limits.conf

Oracle soft nproc 2047

Oracle hard nproc 16384

Oracle soft nofile 1024

Oracle hard nofile 65536

Oracle soft stack 10240

Grid soft nproc 2047

Grid hard nproc 16384

Grid soft nofile 1024

Grid hard nofile 65536

Grid soft stack 10240

Check the actual process

[root@testrac2 ~] # ps-U grid | wc-l

2100

[root@testrac2 ~] # lsof | grep grid | wc-l

31972

[root@testrac2 ~] # ps auxww | grep-I grid | wc-l

one hundred and six

By comparison, it is found that the value set by grid soft nproc is a little small and must be increased.

Adjust grid soft nproc to 4097 save.

When you switch again, the problem is gone.

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