The Toad CodeXpert plugin is an extension to the PL/SQL plugin (commercial) and can only be used with it.

CodeXpert has two modes to analyze PL/SQL sources:

It scans source code from files on disk. This mode is generally used in enterprise environments with configuration management strategies (use tools like Subversion or Clearcase).
It connects to the database and analyzes all the objects stored in that database. This mode is NOT supported by Sonar.

Prerequisites

Quest Software Toad 9.5 or higher with the CodeXpert module (included into Toad for Oracle Xpert, Toad for Oracle Professional and Toad Development Suite for Oracle).
A connection to an Oracle database if you use Toad 9.x or 10.x. This is a limitation of Toad that needs to be connected to the database even if it is not used by the CodeXpert module. So you can set a “fake” connection to an empty database.

Configuration

The following settings need to be added to sonar-project.properties:

# PLSQL plugin specific properties (required if you use Toad)
# Those properties can also be set in $SONAR_RUNNER_HOME/conf/sonar-runner.properties file
# or specified through the Web interface to avoid repeating them on each PL/SQL project.
sonar.plsql.toad.exePath=C:/Program Files/Quest Software/Toad for Oracle 10.5/Toad.exe

sonar.plsql.toad.login=USER@XE

sonar.plsql.toad.password=user_password

Sonar automatically configures and launches Toad CodeXpert to analyse the PL/SQL code.