Linux Login error-connection closed by foreign host__linux

Problem Description:

Remote Linux Login Oracle user, Error:
Connection closed by foreign host.

Then, after logging in with the root user, switch Oracle and error:

SU:/bin/bash:too many open files in system

problem Reason:

Open the number of files to reach the upper limit.

Workaround:

Increase the maximum number of open files.

View Maximum number:

Cat/proc/sys/fs/file-max

Increase the maximum number:

Vi/etc/sysctl.conf

Modify last line

Fs.file-max = 266144

For

Fs.file-max = 2661440

View again:

Cat/proc/sys/fs/file-max

Discovery has been modified, the Oracle user login at this time, successful.

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