optimized for oracle

src/test/java/com/alibaba/druid/pool/TestOraclePreparedStatement.java

@@ -4,28 +4,50 @@ import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
+import java.sql.Statement;
 
 import junit.framework.TestCase;
 import oracle.jdbc.OracleConnection;
 import oracle.jdbc.OraclePreparedStatement;
 
 import com.alibaba.druid.util.JdbcUtils;
+import com.alibaba.druid.util.OracleUtils;
 
 public class TestOraclePreparedStatement extends TestCase {
 
     private String jdbcUrl;
     private String user;
     private String password;
+    private String SQL;
 
     public void setUp() throws Exception {
         jdbcUrl = "jdbc:oracle:thin:@10.20.149.85:1521:ocnauto";
         // jdbcUrl = "jdbc:oracle:thin:@20.20.149.85:1521:ocnauto"; // error url
         user = "alibaba";
         password = "ccbuauto";
+        
+        jdbcUrl = "jdbc:oracle:thin:@10.20.149.81:1521:ointest3";
+        user = "alibaba";
+        password = "deYcR7facWSJtCuDpm2r";
+        SQL = "SELECT * FROM AV_INFO WHERE ID = ?";
+
+        Class.forName(JdbcUtils.getDriverClassName(jdbcUrl));
+    }
+
+    public void createTable() throws Exception {
+        Connection conn = DriverManager.getConnection(jdbcUrl, user, password);
+
+        Statement stmt = conn.createStatement();
+        stmt.execute("DROP TABLE T");
+        ;
+        stmt.execute("CREATE TABLE T (FID INT, FNAME VARCHAR2(4000), FDESC CLOB)");
+        ;
+        stmt.close();
+
+        conn.close();
     }
 
     public void test_0() throws Exception {
-        Class.forName(JdbcUtils.getDriverClassName(jdbcUrl));
 
         Connection conn = DriverManager.getConnection(jdbcUrl, user, password);
 
@@ -37,12 +59,22 @@ public class TestOraclePreparedStatement extends TestCase {
 
         int fetchRowSize = oracleConn.getDefaultRowPrefetch();
 
-        String sql = "SELECT * FROM WP_ORDERS WHERE ID <= ?";
+//        {
+//            oracleConn.setStatementCacheSize(10);
+//            oracleConn.setImplicitCachingEnabled(true);
+//
+//            PreparedStatement stmt = conn.prepareStatement(SQL);
+//            stmt.close();
+//            
+//            PreparedStatement stmt2 = conn.prepareStatement(SQL);
+//            stmt2.close();
+//        }
 
         OraclePreparedStatement oracleStmt = null;
-        PreparedStatement stmt = conn.prepareStatement(sql);
+        PreparedStatement stmt = conn.prepareStatement(SQL);
         oracleStmt = (OraclePreparedStatement) stmt;
         oracleStmt.setRowPrefetch(10);
+ 
         {
 
             stmt.setInt(1, 327);
@@ -53,8 +85,21 @@ public class TestOraclePreparedStatement extends TestCase {
 
             rs.close();
 
-            oracleStmt.clearDefines();
+            //oracleStmt.clearDefines();
         }
+        for (int i = 0; i < 10; ++i){
+            OracleUtils.enterImplicitCache(oracleStmt);
+            OracleUtils.exitImplicitCacheToActive(oracleStmt);
+            stmt.setInt(1, 327);
+            ResultSet rs = stmt.executeQuery();
+            while (rs.next()) {
+                
+            }
+            
+            rs.close();
+            
+        }
+        
         oracleStmt.setRowPrefetch(1000);
         {
             stmt.setInt(1, 11);