User Guide

42 Chapter 3: Data Source Management

Limit Connections Specifies whether ColdFusion MX limits the number of database

connections for the data source. If you enable this option, use the Restrict

Connections to field to specify the maximum.

Restrict Connections

Specifies the maximum number of database connections for the data

source. To use this restriction, you must enable Limit Connections.

Maintain Connections ColdFusion establishes a connection to a data source for every operation

that requires one. Enable this option to improve performance by caching

the data source connection.

String Format Enable this option if your application uses Unicode data in DBMS-specific

Unicode datatypes such as National Character or nchar.

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 cfqueryparam

• Unique cfstoredproc tags

Timeout (min) The maximum number of minutes after the data source connection is made

that you want ColdFusion to cache a connection after it is used.

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.

connection login attempt.

CLOB Select to return the entire contents of any CLOB/Text columns in the

database for this data source. If unchecked, ColdFusion retrieves the

amount specified in the Long Text Buffer setting.

BLOB Select to return the entire contents of any BLOB/Image columns in the

database for this data source. If unchecked, ColdFusion retrieves the

amount specified in the Blob Buffer setting.

LongText Buffer (chr) The default buffer size, used if Enable Long Text Retrieval (CLOB) is not

selected. Default is 64000 bytes.

BLOB Buffer (bytes) The default buffer size, used if Enable binary large object retrieval (BLOB)

is not selected. Default is 64000 bytes.

Allowed SQL The SQL operations that can interact with the current data source.

Setting Description