A Comprehensive Guide to IBM WebSphere Host Publisher Version 3.5

142 IBM WebSphere Host Publisher Version 3.5

The logoff file (Figure 5-19 on page 141) contains the Disconnect macro that is

executed directly before a connection is disconnected in order to properly leave

the host connection.

Figure 5-20 File as400_itsocheckin.screen

The checkin file (Figure 5-20) contains a description of the screen from which the

Data macro can be executed. If an Integration Object returns a connection to the

connection pool in a state different from that in the screen described here, the

connection is not usable for other Integration Objects and hence removed from

the pool and disconnected.

5.4 Monitoring connection pools

Host Publisher Administration offers display and some restricted update

possibilities to monitor the status of connections, connection pools, and user

lists.

To access Server Administration, load the following URL in your browser (where

server is your server computer name):

http://server/HostPublisher/HPAdmin/main.jsp

For more details about Host Publisher Administration, see Chapter 4,

“Administration” on page 69.

5.4.1 Displaying connection pools

Selecting Administration -> Connection Pools in Host Publisher Administration

provides a display of connection pools. Listed are those connection pools that

have at least one active connection. Pools that are not currently used by any

application are not included in the list.

<description uselogic="1 and 2" >

<oia status="NOTINHIBITED" optional="false" invertmatch="false" />

<string value=" Sign-on Information " row="1" col="1" erow="-1"

ecol="-1" casesense="true" optional="false" invertmatch="false" />

</description>

Chapter 5. Connection management 143

Figure 5-21 Connection Pools display

For every active connection pool, the display shows:

򐂰 The number of connections that are currently established (active).

򐂰 The number of connections that are currently in use.

A connection is in use either if an Integration Object has acquired it to retrieve

data from a host application, or if the connection is reserved for a session and

waiting for a response from the Web user. In Figure 5-21, two connections of the

pool as400_itso are active and none is in use at this point of time. Shown are:

򐂰 The number of connections that are idle, that is, that have been released by

their application and are correctly initialized.

򐂰 The number of connections that are established, not in use, but are unusable,

for whatever reason.