Maintaining Connectivity

This chapter contains connectivity maintenance procedures, including:

• Starting and stopping a Communications Server
• Changing the Communications Server's connected session limits
• Changing the level of informational and error logging
• Directing logging information to an additional file
• Establishing default remote nodes
• Starting and stopping a DAS

Start Communications Server

The Communications Server starts up automatically when you start up your Ingres instance. Sometimes, however, it is necessary to stop the Communications Server.

You can start the local instance's Communications Server using Ingres Visual Manager (IVM). For specific instructions, see IVM online help.

You can also start the Communications Server using the command line utilities.

To start the Communications Server at the command line

1. Log in as the installation owner.
2. Enter the following command at the operating system prompt:

   ingstart -iigcc

   The configured number of Communications Servers (set during installation) is started.

Stop Communications Server

You can stop the local instance's Communications Server using Ingres Visual Manager (IVM). For specific instructions, see IVM online help.

You can also stop the Communications Server using the command line utilities.

You can stop the local instance's Communications Servers using Visual Performance Monitor. This "soft" shutdown operation waits for all sessions to end before stopping the server. Close the sessions (or ask users of those sessions to close them) before shutting down a server. For specific instructions, see Visual Performance Monitor online help.

To stop the communications server at the command line

1. Log in as the installation owner.
2. Enter the following command at the operating system prompt:

   ingstop -iigcc

   The configured number of Communications Servers is stopped.

Note: To increase the configured number of servers, you must reconfigure Ingres Net using Configuration Manager (vcbf) or the Configuration-By-Forms (cbf) utility.

Network Server Control Screen in Netutil

You can stop or quiesce the local instance's Communications Server using the Network Server Control screen in netutil.

The Network Server Control screen contains the following tables:

• Network Server ID table

  Lists the server IDs of the Communications Servers and the Bridge Servers on the local instance.

• Network server TYPE table

  Lists server TYPEs (COMSVR, BRIDGE).

Note: You cannot obtain information about remote Communications Servers from this screen.

If the local instance has only one Communications Server, the Network Server Control screen menu selections are:

• Quiesce

  Stops the highlighted Communications Server after all sessions currently in progress terminate

• Stop

  Stops the highlighted Communications Server immediately, disconnecting any open sessions

• Help

  Displays help screens

• End

  Returns you to the netutil startup screen

If the local instance has more than one Communications Server, the menu contains two additional selections:

• Quiesce All

  Stops all Communications Servers after the sessions currently in progress terminate

• Stop All

  Stops all Communications Servers immediately, disconnecting any open sessions

Stop or Quiesce a Communications Server Using Netutil

You can stop or quiesce a Communications Server using the Network Server Control screen in netutil.

To stop a single Communications Server

1. Tab to the Login/password table on the netutil startup screen, and select Control from the function menu.

   The Network Server Control screen appears.

2. Highlight the desired entry in the Network Server ID table, and select Stop from the menu.

   A pop-up screen appears with the following prompt:

   Really stop network server [server ID]?
   Yes — Stop
   No — Don't Stop

3. Use your arrow keys to highlight No or Yes (Yes is the default), and then choose Select from the menu.

   Netutil stops the Communications Server and returns to the Network Server Control screen.

4. Select End.

   You are returned to the netutil startup screen.

To stop multiple Communications Servers

1. Select Stop All from the Network Server Control screen menu in netutil.

   A pop-up screen appears with the following prompt:

   Really stop all network servers?
   Yes — Stop
   No — Don't Stop

2. Use your arrow keys to highlight No or Yes (Yes is the default), and choose Select from the menu.

   Netutil stops all local Communications Servers and returns to the Network Server Control screen.

3. Select End.

   You are returned to the netutil startup screen.

To quiesce a single Communications Server

1. Highlight the desired entry in the Network Server ID table in the Network Server Control screen in netutil, and select Quiesce from the function menu.

   A pop-up screen appears with the following prompt:

   Really quiesce network server [server ID]?
   Yes — Quiesce
   No — Don't quiesce

2. Use your arrow keys to highlight No or Yes (Yes is the default), and choose Select from the menu.

   Netutil quiesces the Communications Server and returns to the Network Server Control screen.

3. Select End.

   You are returned to the netutil startup screen.

To quiesce multiple Communications Servers

1. Select Quiesce All from the Network Server Control screen menu.

   A pop-up screen appears with the following prompt:

   Really quiesce all network servers?
   Yes — Quiesce
   No — Don't quiesce

2. Use your arrow keys to highlight No or Yes (Yes is the default), and choose Select from the menu.

   Netutil quiesces all local Communications Servers and returns to the Network Server Control screen.

3. Select End

   You are returned to the netutil startup screen.

Note: For instructions on stopping or quiescing Communications Servers using netutil non-interactive mode, see the chapter "Establishing Communications."