diff --git a/src/test/java/com/alibaba/druid/bvt/sql/oracle/pl/Oracle_pl_case_1.java b/src/test/java/com/alibaba/druid/bvt/sql/oracle/pl/Oracle_pl_case_1.java
new file mode 100644
index 0000000000..2f48bc599c
--- /dev/null
+++ b/src/test/java/com/alibaba/druid/bvt/sql/oracle/pl/Oracle_pl_case_1.java
@@ -0,0 +1,114 @@
+/*
+ * Copyright 1999-2017 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.alibaba.druid.bvt.sql.oracle.pl;
+
+import com.alibaba.druid.sql.OracleTest;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.visitor.SchemaStatVisitor;
+import com.alibaba.druid.util.JdbcConstants;
+
+import java.util.List;
+
+public class Oracle_pl_case_1 extends OracleTest {
+
+    public void test_0() throws Exception {
+        String sql = "DECLARE\n" +
+				"  grade CHAR(1);\n" +
+				"BEGIN\n" +
+				"  grade := 'B';\n" +
+				"  \n" +
+				"  CASE\n" +
+				"    WHEN grade = 'A' THEN DBMS_OUTPUT.PUT_LINE('Excellent');\n" +
+				"    WHEN grade = 'B' THEN DBMS_OUTPUT.PUT_LINE('Very Good');\n" +
+				"    WHEN grade = 'C' THEN DBMS_OUTPUT.PUT_LINE('Good');\n" +
+				"    WHEN grade = 'D' THEN DBMS_OUTPUT.PUT_LINE('Fair');\n" +
+				"    WHEN grade = 'F' THEN DBMS_OUTPUT.PUT_LINE('Poor');\n" +
+				"  END CASE;\n" +
+				"EXCEPTION\n" +
+				"  WHEN CASE_NOT_FOUND THEN\n" +
+				"    DBMS_OUTPUT.PUT_LINE('No such grade');\n" +
+				"END;"; //
+
+        List<SQLStatement> statementList = SQLUtils.parseStatements(sql, JdbcConstants.ORACLE);
+		SQLStatement stmt = statementList.get(0);
+
+        assertEquals(1, statementList.size());
+
+        SchemaStatVisitor visitor = SQLUtils.createSchemaStatVisitor(JdbcConstants.ORACLE);
+        for (SQLStatement statement : statementList) {
+            statement.accept(visitor);
+        }
+
+//        System.out.println("Tables : " + visitor.getTables());
+//        System.out.println("fields : " + visitor.getColumns());
+//        System.out.println("coditions : " + visitor.getConditions());
+//        System.out.println("relationships : " + visitor.getRelationships());
+//        System.out.println("orderBy : " + visitor.getOrderByColumns());
+
+        assertEquals(0, visitor.getTables().size());
+
+//        Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("employees")));
+//        Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("emp_name")));
+
+//        Assert.assertEquals(7, visitor.getColumns().size());
+//        Assert.assertEquals(3, visitor.getConditions().size());
+//        Assert.assertEquals(1, visitor.getRelationships().size());
+
+        // Assert.assertTrue(visitor.getColumns().contains(new TableStat.Column("employees", "salary")));
+
+		{
+			String output = SQLUtils.toOracleString(stmt);
+			assertEquals("DECLARE\n" +
+							"\tgrade CHAR(1);\n" +
+							"BEGIN\n" +
+							"\tgrade := 'B';\n" +
+							"\tCASE\n" +
+							"\t\tWHEN grade = 'A' THEN DBMS_OUTPUT.PUT_LINE('Excellent'); \n" +
+							"\t\tWHEN grade = 'B' THEN DBMS_OUTPUT.PUT_LINE('Very Good'); \n" +
+							"\t\tWHEN grade = 'C' THEN DBMS_OUTPUT.PUT_LINE('Good'); \n" +
+							"\t\tWHEN grade = 'D' THEN DBMS_OUTPUT.PUT_LINE('Fair'); \n" +
+							"\t\tWHEN grade = 'F' THEN DBMS_OUTPUT.PUT_LINE('Poor');\n" +
+							"\t\tELSE ;\n" +
+							"\tEND CASE;\n" +
+							"\tEXCEPTION\n" +
+							"\t\tWHEN CASE_NOT_FOUND\n" +
+							"\t\t\tDBMS_OUTPUT.PUT_LINE('No such grade');\n" +
+							"END", //
+					output);
+		}
+		{
+			String output = SQLUtils.toOracleString(stmt, SQLUtils.DEFAULT_LCASE_FORMAT_OPTION);
+			assertEquals("declare\n" +
+							"\tgrade CHAR(1);\n" +
+							"begin\n" +
+							"\tgrade := 'B';\n" +
+							"\tcase\n" +
+							"\t\twhen grade = 'A' then DBMS_OUTPUT.PUT_LINE('Excellent'); \n" +
+							"\t\twhen grade = 'B' then DBMS_OUTPUT.PUT_LINE('Very Good'); \n" +
+							"\t\twhen grade = 'C' then DBMS_OUTPUT.PUT_LINE('Good'); \n" +
+							"\t\twhen grade = 'D' then DBMS_OUTPUT.PUT_LINE('Fair'); \n" +
+							"\t\twhen grade = 'F' then DBMS_OUTPUT.PUT_LINE('Poor');\n" +
+							"\t\telse ;\n" +
+							"\tend case;\n" +
+							"\texception\n" +
+							"\t\twhen CASE_NOT_FOUND\n" +
+							"\t\t\tDBMS_OUTPUT.PUT_LINE('No such grade');\n" +
+							"end", //
+					output);
+		}
+	}
+}