JDBC addbatch批量处理数据时有最大值限制

在用jdbc向数据灌入数据时,发现120000的数据每次只能灌入50000多条,其他的就没有了。
在oracle 9i(windows 2003),oracle 10g(RHEL 4)上试验证有相同的结果。

使用定量灌入的办法,每5W条定义为一个事务,进行提交,将120000数据循环灌入,成功。
对于批量的update,delete操作两样有5W条左右的记录数限制。
结论:jdbc批量数据处理的每个批次是有数量的限制的。
我在本地环境中测试的限制量为每批54464条,其他配置的机器没有试过。

以下是插入数据时的代码:


ConnDB cd = new ConnDB();   
        Connection ct = null;   
        PreparedStatement pst = null;   
        ResultSet rs = null;   
  
        ct = cd.getConn();   
  
        String insertSql = "insert into mytable (name,age) values(?,?)";   
  
        System.out.println(insertSql);   
        try {      
            ct.setAutoCommit(false); // 开始事务   
            pst = ct.prepareStatement(insertSql);      
            for (int i = 0; i < 120000; i++) {   
               
                pst.setString(1, "name" + i);   
                pst.setInt(2, i);   
                pst.addBatch();   
                   
                System.out.println(i);   
                //分段提交   
                if((i%50000==0&& i!=0)||i== (120000 -1)){   
                    pst.executeBatch();   
                    ct.commit();   
                    ct.setAutoCommit(false);// 开始事务   
                    pst = ct.prepareStatement(insertSql);   
                    System.out.println("------------>50000");   
                }   
                   
            }   
            ct.commit();// 提交事务   
  
               
  
  
        } catch (SQLException e) {   
  
            try {   
                ct.rollback();   
            } catch (SQLException e1) {   
  
                e1.printStackTrace();   
            }   
            e.printStackTrace();   
        } catch (RuntimeException e) {   
            try {   
                ct.rollback();   
            } catch (SQLException e1) {   
  
                e1.printStackTrace();   
            }   
  
        } finally {   
          cd.close(ct, pst, rs);   
        }   
           
    }  

ConnDB cd = new ConnDB();
		Connection ct = null;
		PreparedStatement pst = null;
		ResultSet rs = null;

		ct = cd.getConn();

		String insertSql = "insert into mytable (name,age) values(?,?)";

		System.out.println(insertSql);
		try {	
			ct.setAutoCommit(false); // 开始事务
			pst = ct.prepareStatement(insertSql);	
			for (int i = 0; i < 120000; i++) {
			
				pst.setString(1, "name" + i);
				pst.setInt(2, i);
				pst.addBatch();
				
				System.out.println(i);
				//分段提交
				if((i%50000==0&& i!=0)||i== (120000 -1)){
					pst.executeBatch();
					ct.commit();
					ct.setAutoCommit(false);// 开始事务
					pst = ct.prepareStatement(insertSql);
					System.out.println("------------>50000");
				}
				
			}
			ct.commit();// 提交事务

			


		} catch (SQLException e) {

			try {
				ct.rollback();
			} catch (SQLException e1) {

				e1.printStackTrace();
			}
			e.printStackTrace();
		} catch (RuntimeException e) {
			try {
				ct.rollback();
			} catch (SQLException e1) {

				e1.printStackTrace();
			}

		} finally {
          cd.close(ct, pst, rs);
		}
		
	}


以下是删除数据时的代码:


ConnDB cd = new ConnDB();   
Connection ct = null;   
PreparedStatement pst = null;   
ResultSet rs = null;   
  
ct = cd.getConn();   
  
String deleteSql = "delete from mytable t where t.name=?";   
  
System.out.println(deleteSql);   
  
int[] intArray = new int[120000];   
  
try {   
    ct.setAutoCommit(false); // 开始事务   
    pst = ct.prepareStatement(deleteSql);   
    for (int i = 0; i < 120000; i++) {   
  
        pst.setString(1, "name" + i);   
        pst.addBatch();   
  
        System.out.println(i);   
        // 分段提交   
        if ((i % 50000 == 0 && i != 0) || i == (120000 - 1)) {   
            intArray = pst.executeBatch();   
            ct.commit();   
            ct.setAutoCommit(false);// 开始事务   
            pst = ct.prepareStatement(deleteSql);   
            System.out.println("------------>50000");   
  
        }   
  
    }   
  
    ct.commit();// 提交事务   
  
} catch (SQLException e) {   
  
    try {   
        ct.rollback();   
    } catch (SQLException e1) {   
  
        e1.printStackTrace();   
    }   
    e.printStackTrace();   
} catch (RuntimeException e) {   
    try {   
        ct.rollback();   
    } catch (SQLException e1) {   
  
        e1.printStackTrace();   
    }   
  
} finally {   
    cd.close(ct, pst, rs);   
}   

		ConnDB cd = new ConnDB();
		Connection ct = null;
		PreparedStatement pst = null;
		ResultSet rs = null;

		ct = cd.getConn();

		String deleteSql = "delete from mytable t where t.name=?";

		System.out.println(deleteSql);

		int[] intArray = new int[120000];

		try {
			ct.setAutoCommit(false); // 开始事务
			pst = ct.prepareStatement(deleteSql);
			for (int i = 0; i < 120000; i++) {

				pst.setString(1, "name" + i);
				pst.addBatch();

				System.out.println(i);
				// 分段提交
				if ((i % 50000 == 0 && i != 0) || i == (120000 - 1)) {
					intArray = pst.executeBatch();
					ct.commit();
					ct.setAutoCommit(false);// 开始事务
					pst = ct.prepareStatement(deleteSql);
					System.out.println("------------>50000");

				}

			}

			ct.commit();// 提交事务

		} catch (SQLException e) {

			try {
				ct.rollback();
			} catch (SQLException e1) {

				e1.printStackTrace();
			}
			e.printStackTrace();
		} catch (RuntimeException e) {
			try {
				ct.rollback();
			} catch (SQLException e1) {

				e1.printStackTrace();
			}

		} finally {
			cd.close(ct, pst, rs);
		}

	}


以下是更新数据的代码:

ConnDB cd = new ConnDB();   
        Connection ct = null;   
        PreparedStatement pst = null;   
        ResultSet rs = null;   
  
        ct = cd.getConn();   
        String deleteSql = "update  mytable t set t.age =20 where t.name=?";   
  
        System.out.println(deleteSql);   
  
        int[] intArray = new int[120000];   
  
        try {   
            ct.setAutoCommit(false); // 开始事务   
            pst = ct.prepareStatement(deleteSql);   
            for (int i = 0; i < 120000; i++) {   
  
                pst.setString(1, "name"+i);   
                pst.addBatch();   
  
                System.out.println(i);   
                // 分段提交   
                if ((i % 50000 == 0 && i != 0) || i == (120000 - 1)) {   
                    intArray = pst.executeBatch();   
                    ct.commit();   
                    ct.setAutoCommit(false);// 开始事务   
                    pst = ct.prepareStatement(deleteSql);   
                    System.out.println("------------>50000");   
  
                }   
  
            }   
  
            ct.commit();// 提交事务   
  
        } catch (SQLException e) {   
  
            try {   
                ct.rollback();   
            } catch (SQLException e1) {   
  
                e1.printStackTrace();   
            }   
            e.printStackTrace();   
        } catch (RuntimeException e) {   
            try {   
                ct.rollback();   
            } catch (SQLException e1) {   
  
                e1.printStackTrace();   
            }   
  
        } finally {   
            cd.close(ct, pst, rs);   
        }   
  
    }  

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