When you increase the number of user connections, you must also increase the file descriptor limit. However, Veritas running over VCS does not propogate file descriptor limit changes from one user session to another. For example, if you change the file descriptor limits in your current session:
ulimit -n 8194
Subsequent UNIX sessions have the default setting (1024) for the number of file descriptors. Consequently, while the Veritas VCS manages the cluster and brings instances online, it logs into the Linux operating system as the user sybase (starting a new UNIX session), and uses the default value for the number of file descriptors.
To ensure that all sybase user sessions have the correct file descriptor limit, add the following lines to /etc/security/limits.conf:
sybase hard nofile 8096 sybase soft nofile 8096
