补充Oracle测试

git-svn-id: http://code.alibabatech.com/svn/druid/trunk@890 b9813039-fb51-4c41-a8b9-e21c2acb5095

src/main/java/com/alibaba/druid/pool/ha/MultiDataSource.java

@@ -25,7 +25,7 @@ public abstract class MultiDataSource extends DataSourceAdapter {
     }
 
     public int createStatementId() {
-        return statementIdSeed.getAndIncrement();
+        return statementIdSeed.incrementAndGet();
     }
 
     public abstract List<DruidDataSource> getDataSources();