Installation guide

Chapter 4: Administering Server Pools
48 FlashCONNECT Administrator’s Guide
From this point forward, as additional connections are requested, they are
alternately assigned to each database server. w3Monitor creates additional
connections as needed until the configuration limits are reached, thus balancing the
load.
As connections are dropped, they are reassigned in connection number order. For
example, if connection 1 and 3 are both available, connection 1 is used before
connection 3 is used. At the same time, depending on how the w3Monitor is
configured, as the load is shed from one database server, connections are dropped
to help maintain load balance as the load diminishes.
Controlling Server Pools and w3Monitor Manually
Usually WWW-MANAGER is used to start and stop both the server pools and w3Monitor.
However, if manual control is needed, or more visibility of w3Monitor’s action is
needed, both the server pools and w3Monitor can be manually controlled.
If more visibility of w3Monitor’s activities is needed, w3Monitor can also run from a
terminal (for example, by logging to the WWW account from a terminal and typing
W3MONITOR -START).
w3Monitor only manages enabled server pools. The WWW-MANAGER, WWW-POOL and
WWW-START commands are used to start a server pool, while WWW-STOP and
WWW-MANAGER are used to stop a server pool.
1. Database A Yes
2. Database A Yes
3. Database B Yes
4. Database B Yes
5. Database A No
6. Database B No
NOTE—When additional connections are needed, w3Monitor may create more than
one connection at a time, slightly changing the balancing pattern from the
pattern shown here.
NOTE—For information about configuring server pools, see Configuring
FlashCONNECT Server Pools in the FlashCONNECT Installation Guide.