title: Flyway 2.1.1 failing to create version table with Oracle
body: <p>I am testing Flyway for the first time, version 2.1.1.
  I am using the Ant task <code>migrate</code> which should create the <code>schema_version</code> table if it does not already exist (and it does not exists in my schema), and I get this error:</p>
  
  <pre><code>C:\Users\dmusiani\Desktop\flyaway-test&gt;ant
  Buildfile: build.xml
  
  migrate-db:
  [flyway:migrate] com.googlecode.flyway.core.api.FlywayException: Found non-empty
   schema "SYSTEM" without metadata table! Use init() first to initialize the meta
  data table.
  
  BUILD FAILED
  C:\Users\dmusiani\Desktop\flyaway-test\build.xml:37: Flyway Error: com.googlecod
  e.flyway.core.api.FlywayException: Found non-empty schema "SYSTEM" without metad
  ata table! Use init() first to initialize the metadata table.
  
  Total time: 0 seconds
  C:\Users\dmusiani\Desktop\flyaway-test&gt;
  </code></pre>
  
  <p>I tried adding the <code>init</code> before the migration, and the first time it all works, but as I launch the build a second time, I get an error from the <code>init</code> sayng the table already exists.</p>
  
  <p>Here is my Ant target:</p>
  
  <pre><code>&lt;target name="migrate-db"&gt;
  
      &lt;path id="flyway.lib.path"&gt;
          &lt;fileset dir="./lib"&gt;
              &lt;include name="**/flyway*.jar"/&gt;
          &lt;/fileset&gt;
      &lt;/path&gt;
  
      &lt;path id="flyway.classpath"&gt;
          &lt;fileset dir="./lib" includes="ojdbc6-11.2.0.3.jar"/&gt;
      &lt;/path&gt;
  
      &lt;taskdef uri="antlib:com.googlecode.flyway.ant"
               resource="com/googlecode/flyway/ant/antlib.xml"
               classpathref="flyway.lib.path"/&gt;
  
      &lt;flyway:init  driver="oracle.jdbc.OracleDriver"
                       url="jdbc:oracle:thin:@localhost:1521:WBMD"
                       user="system"
                       password="manager" 
                       initVersion="0"
                       initDescription="Version table initialization (table &amp;quot;USERNAME&amp;quot;.&amp;quot;schema_version&amp;quot; )"/&gt;
  
      &lt;flyway:migrate driver="oracle.jdbc.driver.OracleDriver"
                       url="jdbc:oracle:thin:@localhost:1521:WBMD"
                       user="system"
                       password="manager"
                       sqlMigrationPrefix="patch" &gt;
          &lt;locations&gt;
              &lt;location path="integrations-runtime/HELIOS/1-9-0/nlip-0-5-0/migration/system"/&gt;
          &lt;/locations&gt;
      &lt;/flyway:migrate&gt;
  
  &lt;/target&gt;
  </code></pre>
  
  <p>Any suggestion on how to fix it?</p>