Linux operating systemsAIX operating systems

Configuring a server instance to use shared memory

Configure a server instance to use shared memory to help resolve slow database backups that can occur because of Transmission Control Protocol (TCP) loopback problems.

Procedure

Complete the following steps to update the database backup node configuration for your server to enable shared memory:

  1. Ensure that the server options file, dsmserv.opt, contains the following lines:
    COMMMethod SHAREdmem
    SHMPort         1510
  2. Locate the dsm.sys client API system options file, which is stored in the following location by default:
    server_bin_directory/dbbkapi/dsm.sys
  3. Modify the stanza for the database backup node in the client API system options file, dsm.sys.
    1. Remove the following lines from the stanza:
      COMMMethod TCPip
      TCPServeraddress 127.0.0.1
      TCPPort 1500 
    2. Add the following lines to the stanza:
      COMMMethod SHAREdmem
      SHMPort 1510