diff --git a/src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleExprParser.java b/src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleExprParser.java
index 5c23993ca2..cdad8f54ba 100644
--- a/src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleExprParser.java
+++ b/src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleExprParser.java
@@ -885,6 +885,8 @@ public class OracleExprParser extends SQLExprParser {
             interval.setValue(new SQLCharExpr(lexer.stringVal()));
         } else if (lexer.token() == Token.VARIANT) {
             interval.setValue(new SQLVariantRefExpr(lexer.stringVal()));
+        } else if (lexer.token() == Token.QUES) {
+            interval.setValue(new SQLVariantRefExpr("?"));
         } else {
             return new SQLIdentifierExpr("INTERVAL");
         }
diff --git a/src/main/java/com/alibaba/druid/sql/dialect/oracle/visitor/OracleOutputVisitor.java b/src/main/java/com/alibaba/druid/sql/dialect/oracle/visitor/OracleOutputVisitor.java
index cbb901aae4..c1249953d7 100644
--- a/src/main/java/com/alibaba/druid/sql/dialect/oracle/visitor/OracleOutputVisitor.java
+++ b/src/main/java/com/alibaba/druid/sql/dialect/oracle/visitor/OracleOutputVisitor.java
@@ -179,7 +179,8 @@ public class OracleOutputVisitor extends SQLASTOutputVisitor implements OracleAS
     }
 
     public boolean visit(OracleIntervalExpr x) {
-        if (x.getValue() instanceof SQLLiteralExpr) {
+        SQLExpr value = x.getValue();
+        if (value instanceof SQLLiteralExpr || value instanceof SQLVariantRefExpr) {
             print0(ucase ? "INTERVAL " : "interval ");
             x.getValue().accept(this);
             print(' ');
diff --git a/src/test/java/com/alibaba/druid/bvt/sql/oracle/select/OracleSelectTest102_interval.java b/src/test/java/com/alibaba/druid/bvt/sql/oracle/select/OracleSelectTest102_interval.java
new file mode 100644
index 0000000000..b2e77b399f
--- /dev/null
+++ b/src/test/java/com/alibaba/druid/bvt/sql/oracle/select/OracleSelectTest102_interval.java
@@ -0,0 +1,91 @@
+/*
+ * 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.select;
+
+import com.alibaba.druid.sql.OracleTest;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.ast.statement.SQLSelectStatement;
+import com.alibaba.druid.sql.dialect.oracle.parser.OracleStatementParser;
+import com.alibaba.druid.sql.dialect.oracle.visitor.OracleSchemaStatVisitor;
+import org.junit.Assert;
+
+import java.util.List;
+
+public class OracleSelectTest102_interval extends OracleTest {
+
+    public void test_0() throws Exception {
+        String sql = //
+                "SELECT id, bill_batch_no, partner_id, currency, original_amount\n" +
+                        "  , exchange_rate, real_currency, real_amount, success_count, failure_count\n" +
+                        "  , failure_amount, bill_date, expiry_date, status, remit_no\n" +
+                        "  , exchange_date, apply_bill_date, check_date, charge_off_date, gmt_create\n" +
+                        "  , gmt_modified\n" +
+                        "FROM ktv_bill_info\n" +
+                        "WHERE status = ?\n" +
+                        "  AND gmt_modified > SYSDATE - INTERVAL ? MINUTE\n" +
+                        "  AND gmt_modified <= SYSDATE - INTERVAL ? MINUTE\n" +
+                        "  AND rownum <= ?\n" +
+                        "ORDER BY gmt_modified ASC";
+
+        System.out.println(sql);
+
+        OracleStatementParser parser = new OracleStatementParser(sql);
+        List<SQLStatement> statementList = parser.parseStatementList();
+        SQLSelectStatement stmt = (SQLSelectStatement) statementList.get(0);
+        System.out.println(stmt.toString());
+
+        Assert.assertEquals(1, statementList.size());
+
+//        SQLMethodInvokeExpr expr = (SQLMethodInvokeExpr) stmt.getSelect().getQueryBlock().getSelectList().get(0).getExpr();
+//        SQLMethodInvokeExpr param0 = (SQLMethodInvokeExpr) expr.getParameters().get(0);
+//        assertTrue(param0.getParameters().get(0)
+//                instanceof SQLAggregateExpr);
+
+        OracleSchemaStatVisitor visitor = new OracleSchemaStatVisitor();
+        stmt.accept(visitor);
+
+        {
+            String text = SQLUtils.toOracleString(stmt);
+
+            assertEquals("SELECT id, bill_batch_no, partner_id, currency, original_amount\n" +
+                    "\t, exchange_rate, real_currency, real_amount, success_count, failure_count\n" +
+                    "\t, failure_amount, bill_date, expiry_date, status, remit_no\n" +
+                    "\t, exchange_date, apply_bill_date, check_date, charge_off_date, gmt_create\n" +
+                    "\t, gmt_modified\n" +
+                    "FROM ktv_bill_info\n" +
+                    "WHERE status = ?\n" +
+                    "\tAND gmt_modified > SYSDATE - INTERVAL ? MINUTE\n" +
+                    "\tAND gmt_modified <= SYSDATE - INTERVAL ? MINUTE\n" +
+                    "\tAND rownum <= ?\n" +
+                    "ORDER BY gmt_modified ASC", text);
+        }
+
+        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(1, visitor.getTables().size());
+        assertEquals(21, visitor.getColumns().size());
+        assertEquals(4, visitor.getConditions().size());
+        assertEquals(0, visitor.getRelationships().size());
+        assertEquals(1, visitor.getOrderByColumns().size());
+    }
+
+   
+}