System information

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CONFIGURING AND ADMINISTERING COLDFUSION 9
Data Source Management
Last updated 2/21/2012
Connecting to Informix
To see a list of Informix versions that ColdFusion supports, go to www.adobe.com/go/learn_cfu_cfsysreqs_en. Use the
settings in the following table to connect ColdFusion to Informix data sources:
Max Pooled Statements Enables reuse of prepared statements (that is, stored procedures and queries that use the cfqueryparam tag).
Although you tune this setting based on your application, start by setting it to the sum of the following:
• Unique cfquery tags that use the cfqueryparam tag
• Unique cfstoredproc tags
Timeout (min) The number of minutes that ColdFusion MX maintains an unused connection before destroying it.
Interval (min) The time (in minutes) that the server waits between cycles to check for expired data source connections to close.
Disable Connections If selected, suspends all client connections.
Login Timeout (sec) The number of seconds before ColdFusion times out the attempt to log in to the data source connection.
CLOB Returns the entire contents of any CLOB/Text columns in the database for this data source. If deselected,
ColdFusion retrieves the number of characters specified in the Long Text Buffer setting. For UDB 7.1 and 7.2, a 32K
limit on CLOBs exits.
BLOB Returns the entire contents of any BLOB/Image columns in the database for this data source. If deselected,
ColdFusion retrieves the number of characters specified in the BLOB Buffer setting. BLOBs are not supported on
UDB 7.1 and 7.2.
LongText Buffer (chr) The default buffer size, used if the CLOB option is not selected. The default value is 64000 bytes.
BLOB Buffer (bytes) The default buffer size, used if the BLOB option is not selected. The default value is 64000 bytes.
Allowed SQL The SQL operations that can interact with the current data source.
Validation query Called when a connection from the pool is resued. This can slow query response time because an additional query
is generated. Specify the validation query just before restarting the database to verify all connections, but remove
the validation query after restarting the database to avoid any performance loss.
Setting Description
CF Data Source Name The data source name (DSN) that ColdFusion uses to connect to the data source.
Database The database to which this data source connects.
Informix Server The name of the Informix database server to which you want to connect.
Server The name of the server that hosts the database. If the database is local, enclose the word local in parentheses.
Port The number of the TCP/IP port that the server monitors for connections.
User name The user name that ColdFusion passes to the JDBC driver to connect to the data source if a ColdFusion application
does not supply a user name (for example, in a
cfquery tag).
Password The password that ColdFusion passes to the JDBC driver to connect to the data source if a ColdFusion application
does not supply a password (for example, in a
cfquery tag).
Description (Optional) A description for this connection.
Connection String A field that passes database-specific parameters, such as login credentials, to the data source.
Setting Description