[Communications]
attributes on Multi-Tier client and server
Settings in the [Communications]
stanza of the oplrqb.ini
) correspond roughly to settings in the [Communications]
stanza of the odbc.ini
file on Unix, Linux, and Mac OS X; the
file on Mac OS 9; and the Windows Registry key section
.
These settings apply only to
On Unix, Linux, and Mac OS X, the best way to adjust these settings is through the HTTP-based
or Request Broker Admin Assistant
.
On Windows, the
(oplcfg32.exe
) is best used.
Mac OS 9 users have the
control panel for this purpose.
Please read the table below carefully before adjusting these settings from their defaults.
Attribute Name |
Client Side HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\OPENLINK.INI , ODBC Preferences PPC , odbc.ini , or $ODBCINI |
Server Side Broker Rulebook oplrqb.ini |
|
The maximum message chunk size (in bytes) the .
Shown as the
Send buffer size
in the HTTP-based configuration tools.
Default is 4096. |
The maximum message chunk size (in bytes) the Broker or Database Agent will send to the client. This must match the client parameter .
Shown as the
Send buffer size
in the HTTP-based configuration tools.
Default is 16000. |
|
The maximum message chunk size (in bytes) the .
Shown as the
Receive buffer size
in the HTTP-based configuration tools.
Default is 16000. |
The maximum message chunk size (in bytes) the Broker or Database Agent will accept. This must match the client parameter .
Shown as the
Receive buffer size
in the HTTP-based configuration tools.
Default is 4096. |
|
The number of seconds the client driver will wait for a response from the Request Broker, before timing out. 60 (one minute) is usually more than sufficient.Shown as the
Broker contact timeout
in the HTTP-based configuration tools.
Default is 30. |
The number of seconds local oplshut ) will wait for a response, before timing out.
Again, 60 (one minute) should be sufficient.Shown as the
Broker contact timeout
in the HTTP-based configuration tools.
Default is 30. |
|
The number of seconds the client driver will wait for the first results of a query. This should generally be set 10-25% longer than the anticipated DBMS execution time of the longest SQL query. It is not generally recommended that this parameter exceed 3600 (one hour), unless SQL queries are known to take longer. Shown as the
Agent contact timeout
in the HTTP-based configuration tools.
Default is 120. |
The number of seconds the Broker will wait for an initial response from a Database Agent, when starting a new connection, before the Broker launches a new instance of that Agent. This does not apply when you have the Agent Reuse value set to Never .
It is not recommended this value be less than 10, and it should never be more than half of that Rulebook's .Shown as the
Agent initialization timeout
in the HTTP-based configuration tools.
Default is 10. |
|
The number of seconds the ODBC client will wait before re-attempting a timed-out call to the server, either Broker or Agent. After each timeout, this value is doubled, with a maximum equal to the client's during initial connection establishment, and equal to the client's during an active session.
An initial setting of 5 is generally recommended.Shown as the
Agent retry timeout
in the HTTP-based configuration tools.
Default is 5. |
The number of seconds the Broker will wait before re-attempting to contact a Database Agent which has failed to respond. After each timeout, this value is doubled, with a maximum of 30. An initial setting of 5 is generally recommended. Shown as the
Client retry timeout
in the HTTP-based configuration tools.
Default is 5. |
Referenced by...