# ij.URLCheck property

The `ij.URLCheck` property specifies whether `ij` should check for invalid or non-Derby URL attributes when you are using the embedded driver.

Set this property to `false` to prevent `ij` from validating URL attributes. The default value is `true`.

When the `ij.URLCheck` property is set to `true`, you are notified whenever a connection URL contains an incorrectly specified attribute. For example, if the attribute name is misspelled or has an incorrect case, `ij` prints a message.

Note: `ij` checks attribute values if the attribute has pre-defined values. For example, the attribute shutdown has the pre-defined values of `true` or `false`. If you try to set the attribute shutdown to a value other than `true` or `false`, `ij` displays an error. For example:

    ij> Connect 'jdbc:derby:anyDB;shutdown=rue';
    ERROR XJ05B: JDBC attribute 'shutdown' has an invalid value 'rue',
    valid values are '{true|false}'.
    ij>

## Syntax

    ij.URLCheck={ false | true }

## Example

By default, `ij` displays messages about invalid attributes:

    java org.apache.derby.tools.ij
    ij version 10.16
    ij> connect 'mydb;uSer=naomi';
    URL Attribute [uSer=naomi]
       Case of the Derby attribute is incorrect.

The following command line turns off URL attribute checking in `ij`.

    java -Dij.URLCheck=false org.apache.derby.tools.ij
    ij version 10.16
    ij> connect 'mydb;uSer=naomi';
    ij>

Typically, you would only explicitly turn off the URL checker if you were using `ij` with a non-Derby JDBC driver or database.

## Notes

The URL checker does not check the validity of properties, only database connection URL attributes.

For a list of attributes, see "Setting attributes for the database connection URL" in the Derby Reference Manual. Because the `ij.URLCheck` property is valid only with the embedded driver, it does not apply to attributes such as securityMechanism=value, ssl=sslMode, and the attributes related to tracing.

Parent topic: ij properties reference
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