Oracle Application Server 10.1.3.4, User Manual

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Configuring the Daemon for High Availability
Advanced Features of OracleAS Adapter for IMS/DB 8-5
A one-client server can be reused after its (single) client has disconnected. Reuse of
servers enhances startup performance because it avoids the need to repeat
initialization.
This parameter is not available if the Limit server reuse parameter is not selected.
This parameter is not available if the server mode value is singleClient .
■
Limit Concurrent clients per server : Select this to limit the number of clients that
a server can accept for the current workspace process.
If this is not selected, the number of clients is unlimited.
If Limit concurrent clients per server is selected, in the field next to the check box,
enter the maximum number of clients that a server process for the current
workspace accepts. The default for this field is
None , indicating that the number
of clients for each server is unlimited. This field is available if the server mode
value is
multiClient or multiThreaded .
■
Specify Server Priority : Set the priority for servers. For example, a workspace for
applications with online transaction processing can be assigned a higher priority
than a workspace that requires only query processing. The lower the number, the
higher the priority. For example, workspaces with a priority of
1
are given a
higher priority than workspaces with a priority of
2
.
Note : This is unavailable if Use default server priority is selected.
■
Use default server priority : Sets the priority to 0. There is no specific priority for
this workspace. Clear this check box to set a priority in the Specify Server Priority
parameter.
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Keep when daemon ends : Select this to kill all servers started by that daemon
when a daemon is shutdown, even if they are active. Select this if you want the
servers for the workspace to remain active, even after the daemon has been shut
down. If selected, it is the responsibility of the system operator or manager to
ensure that the servers are eventually killed. This must be done at the system level.
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Number of prestarted servers in pool : The number of server processes that are
prestarted for this workspace when the daemon starts up. These are available for
use by new client processes with minimal initialization time. Instead of starting a
new server process each time one is requested by a client, the daemon
immediately allocates (to the client) a server from a pool of available servers.
When the number of available server processes drops lower than the value
specified in the Minimum number of available servers field, the daemon again
starts server processes until the specified number of available servers is reached.
The default for this parameter is
0
, meaning that no servers are prestarted for this
workspace.
■
Number of spare servers : The minimum number of server processes in the
prestarted server's pool before the Oracle Connect daemon resumes creating new
server processes (up to the number specified in the Initial number of servers field
value, described earlier). If this parameter is set to a value greater than the Initial
number of servers field value, the daemon considers the value to be the same as
the value specified in the Initial number of servers field. In this case, a new server
process is started and added to the pool each time a server process is removed
from the pool and allocated to a client). The default for this parameter is
0
, which
means that new servers are created only when there are no other available servers.
■
Number of sub-tasks : The number of sub-tasks for a server that are prestarted for
this workspace when the daemon starts up. In addition to setting up a pool of
server processes as described earlier, you can set additional server processes as