# ij.exceptionTrace property

#### Function

When the `ij.exceptionTrace` property is set to `true`, a full exception stack trace is printed when exceptions occur in `ij`. The default setting is `false`.

#### Syntax

    ij.exceptionTrace={ false | true }

#### Example

In the following example, `ij` is started with the `ij.exceptionTrace` property set to true.

    java -Dij.exceptionTrace=true org.apache.derby.tools.ij
    ij version 10.6
    ij> connect 'jdbc:derby:wombat';
    ERROR XJ004: Database 'wombat' not found.
    SQL Exception: Database 'wombat' not found.
        at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(SQLExceptionFactory.java:44)
        at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Util.java:87)
        at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Util.java:93)
        at org.apache.derby.impl.jdbc.Util.generateCsSQLException(Util.java:172)
        at org.apache.derby.impl.jdbc.EmbedConnection.newSQLException(EmbedConnection.java:1955)
        at org.apache.derby.impl.jdbc.EmbedConnection.(EmbedConnection.java:254)
        at org.apache.derby.impl.jdbc.EmbedConnection30.(EmbedConnection30.java:72)
        at org.apache.derby.jdbc.Driver30.getNewEmbedConnection(Driver30.java:73)
        at org.apache.derby.jdbc.InternalDriver.connect(InternalDriver.java:200)
        at java.sql.DriverManager.getConnection(DriverManager.java:512)
        at java.sql.DriverManager.getConnection(DriverManager.java:140)
        at org.apache.derby.impl.tools.ij.ij.dynamicConnection(ij.java:873)
        at org.apache.derby.impl.tools.ij.ij.ConnectStatement(ij.java:723)
        at org.apache.derby.impl.tools.ij.ij.ijStatement(ij.java:553)
        at org.apache.derby.impl.tools.ij.utilMain.go(utilMain.java:289)
        at org.apache.derby.impl.tools.ij.Main.go(Main.java:207)
        at org.apache.derby.impl.tools.ij.Main.mainCore(Main.java:173)
        at org.apache.derby.impl.tools.ij.Main14.main(Main14.java:55)
        at org.apache.derby.tools.ij.main(ij.java:60)  ij
    ij>

Parent topic: ij properties reference
Related reference
ij.connection.connectionName property
ij.database property
ij.dataSource property
ij.driver property
ij.maximumDisplayWidth property
ij.outfile property
ij.password property
ij.protocol property
ij.protocol.protocolName property
ij.showErrorCode property
ij.showNoConnectionsAtStart property
ij.showNoCountForSelect property
ij.URLCheck property
ij.user property
derby.ui.codeset property
derby.ui.locale property