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Configure the ulimit /etc/security/limits.conf Values

One of the Oracle Enterprise Manager 12c OMS installation prerequisites is to increase the number of file descriptors to at least 4096.


As root, edit the /etc/security/limits.conf file and add the following two entries:
<UID> soft nofile 4096
<UID> hard nofile 4096


As the installing user, i.e. oracle, confirm the new file limits by typing:

# su - oracle
$ ulimit -n
$ /bin/sh -c "ulimit -n"


Note:  Substitute oracle with your installing user, i.e. su - my-installing-user to su to the installing user.


The value should be greater than 4096.

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