Connect to Apache Derby Embedded

Option

Description

CF Data Source Name

The data source name (DSN) that ColdFusion uses to connect to the data source.

Database Folder

The folder where the database is located.

Create Database

Select this option to create a database. The new database exists in the path specified  in the Database Folder. If the database already exists, a SQL  warning is generated, and  a connection to the existing database is established.

Description

(Optional) A description for this connection.

ColdFusion Username

The username you use to log in to the ColdFusion Administrator.

ColdFusion Password

The password you use to log in to the ColdFusion Administrator.

Connection String

A field that passes database-specific parameters, such as login credentials, to the data source.

Limit Connections

If selected, limits the number of data source connections to the value entered in the Restrict Connections To field.

Maintain Connections

ColdFusion establishes a connection to a data source for every operation that requires one. Select this option to improve performance by caching the data source connection.

Max Pooled Statements

Select this option to reuse 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 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 data source connection login attempt.

CLOB

Select to return the entire contents of any CLOB/Text columns in the database for this data source. If not selected, 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 not selected, ColdFusion retrieves the amount specified in the BLOB Buffer setting.

Long Text 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.

Disable Autogenerated Keys

Disables the autogeneration of keys for data sources

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. You should specify this just before restarting the database to verify all connections, but remove the validation query after restarting the database to avoid any performance loss.