1. Administration Guide
  2. File Limits

File Limits

In addition to the IPC resource limits, WebSphere and the JD Edwards EnterpriseOne HTML Server can require a large number of open files. To see the current values, review the file /proc/sys/fs/file-nr. This read-only file contains these three values:

  • Total allocated file handles

  • Currently used file handles

  • Maximum file handles

The first value represents a peak, so when this value approaches the maximum value, consider raising the limit. If the peak value reaches the limit, you will get unpredictable results because processes will not be able to open files. To change the maximum file handle limit, use the fs.file-max setting. This setting controls the maximum number of files that can be simultaneously open throughout the entire system. The recommendation for JD Edwards EnterpriseOne is a minimum of 32768, and this number might need to be increased to 6815744 for larger installations.