This page will tell you about recent changes to this manual. The most recent changes are mentioned first.
5 Oct 2004 -prefer_vital command tail described.
5 Oct 2004 New database open modes have been added, allowing the default network layout specified via AUXDISTR command tails or persistent network layout records to be over-ridden. See Database Open Modes Affecting Network Layout for details.
24 Mar 2004 Updated with information about 4.525 Linux/Unix DP4.
-local_port command tail described.
22 Sep 2003 new −debug_connect option described.
24 Jul 2003 The material in this guide has been substantially revised and rearranged for 4.621.
20 May 2003 TCPW is now multi-threading. This gives much improved performance in the "named server" configuration where more than one program is being run, and more than one server is in use. TCPW also bypasses TCP/IP completely when it detects that the TCPMGR to be called is on the same machine, and calls the database manager for TPCMGR directly (it automatically discovers which IPC channel TCPMGR is using and forwards messages to it directly). Multi-threading can be controlled using the new -threads n command tail.
29 Apr 2003 TCPMGR automatically accepts connections on any available network adapter. In particular it can connect on dial-up connections created, or DHCP IP addresses assigned, after TCPMGR was started.
29 Apr 2003 TCPW returns instantly if the port for DP4 is not active on the server (indicating that the server is offline). This won't work for machines with a permanent IP address that are turned off. You can use the new connect_timeout setting to control how long DP4 waits when attempting to connect to a server
23 Apr 2003 Named connection Configuration recommended order for loading programs corrected (previous instructions failed when DP4 loaded as application rather than service).
11 Mar 2003 Operation of Table of Contents improved
30 Oct 2002 Named connection Configuration described, including new "Reverse Connection" facility
17 Oct 2002 What's New Page Added, and a few new links added between pages.
23 Apr 2002 Information about Security Command tails for Network Manager added.
22 Feb 2002 Information about DP4 Terminal Server added.
12 Oct 2001 A few notes added about operation over the Internet or other WAN.
11 April 2001 Minor additions to trouble shooting section