我正在尝试将三个独立的表从SQL Server 2012加载到Oracle中。我已经在不同的类中建立了与SQL Server和Oracle的连接，如下所示：
SQL Server连接：
public class TestSqlUtil {
public Connection getConnection() throws SQLException, IOException
{
String propsFile = "tasmania.properties";
Properties props = new Properties();
InputStream inputStream =
this.getClass().getClassLoader().getResourceAsStream(propsFile);
if (inputStream == null)
{
throw new FileNotFoundException("property file '" + propsFile
+ "' not found in the classpath");
}
props.load(inputStream);
String dblogin = props.getProperty("sqlfdb.LOGIN");
String dbpasswd = props.getProperty("sqlfdb.PASSWD");
String jdbcDrv = props.getProperty("sqlfdb.JDBCOCIDRV");
DriverManager.registerDriver(new oracle.jdbc.OracleDriver());
Connection con = DriverManager.getConnection(jdbcDrv, dblogin, dbpasswd);
System.out.printf("successfull connection");
System.out.println();
return con;
}
public void cleanUp(Connection con, PreparedStatement ps, ResultSet rs)
throws SQLException
{
if (rs != null) rs.close();
if (ps != null) ps.close();
if (con != null) con.close();
}
public static void main(String a[]) throws SQLException, IOException
{
DaoUtil tasmaniaUtil = new DaoUtil();
tasmaniaUtil.getConnection();
}
}
Oracle连接：
public class DaoUtil
{
public Connection getConnection() throws SQLException, IOException
{
String propsFile = "tasmania.properties";
Properties props = new Properties();
InputStream inputStream =
this.getClass().getClassLoader().getResourceAsStream(propsFile);
if (inputStream == null)
{
throw new FileNotFoundException("property file '" + propsFile
+ "' not found in the classpath");
}
props.load(inputStream);
String dblogin = props.getProperty("intfdb.LOGIN");
String dbpasswd = props.getProperty("intfdb.PASSWD");
String jdbcDrv = props.getProperty("intfdb.JDBCOCIDRV");
DriverManager.registerDriver(new oracle.jdbc.OracleDriver());
Connection con = DriverManager.getConnection(jdbcDrv, dblogin, dbpasswd);
System.out.printf("successfull connection");
System.out.println();
return con;
}
public void cleanUp(Connection con, PreparedStatement ps, ResultSet rs)
throws SQLException
{
if (rs != null) rs.close();
if (ps != null) ps.close();
if (con != null) con.close();
}
public static void main(String a[]) throws SQLException, IOException
{
DaoUtil tasmaniaUtil = new DaoUtil();
tasmaniaUtil.getConnection();
}
}
我已将所有登录详细信息存储在属性文件中。
我的第一个问题是如何将这两个类合并为两个连接？我的第二个问题是如何使用select语句从SQL Server中获取所有数据，然后将insert语句插入到Oracle数据库中？
1。对于MATERIAL_BATCH：
在SQL Server中：
MATERIAL NUMBER|BATCH NUMBER|VENDOR BATCH NUMBER|VENDOR NUMBER|EXPIRATION DATE|
MODIFIED_DATETIME
在SQL Developer中：
MATERIAL NUMBER|BATCH NUMBER|VENDOR BATCH NUMBER|VENDOR NUMBER|GOODS_SUPPLIER_NUMBER|
EXPIRATION DATE|INSTIME
2。对于MATERIAL_MASTER：
在SQL Server中：
PLANT|MATERIAL_NUMBER|MATERIAL_DESC|MODIFIED_DATETIME
在SQL Developer中：
PLANT|MATERIAL_NUMBER|MATERIAL_DESC|PROFIT_CENTER_NAME|STATUS|INSTIME
第3。对于供应商：
在SQL Server中：
VENDOR_NUMBER|VENDOR_NAME|MODIFIED_DATETIME
在SQL Developer中：
VENDOR_NUMBER|VENDOR_NAME|VENDOR_LOCATION|INSTIME
SQL Server（Oracle）中有一些SQL Server中没有的字段。对于那些我将保留NULL。
答案 0 :(得分：3)
这里有一些关于如何继续的草拟代码 - 它不会因为缺少某些方法而编译 - 但你应该可以从这里填补空白。
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class DBCopy {
public static void main(String[] args) {
try {
//You know how to do this - just rename and copy in...
Connection sourceCon = getOracleConnection();
Connection targetCon = geSqlServerConnection();
copyMaterialBatch(sourceCon, targetCon);
copyMaterialMaster(sourceCon, targetCon);
copyVendor(sourceCon, targetCon);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private static void copyMaterialBatch(Connection sourceCon, Connection targetCon) throws SQLException {
//Try-with-Resource to close all cursors once we're done
try(//SELECT from source
PreparedStatement ps = sourceCon.prepareStatement(
"SELECT \"MATERIAL NUMBER\", "
+ "\"BATCH NUMBER\", "
+ "\"VENDOR BATCH NUMBER\", "
+ "\"VENDOR NUMBER\", "
+ "\"EXPIRATION DATE\", "
+ "\"MODIFIED_DATETIME\" FROM MATERIAL_BATCH");
//INSERT into target
PreparedStatement ins = targetCon.prepareStatement(
"INSERT INTO MATERIAL_BATCH([MATERIAL NUMBER], "
+ "[BATCH NUMBER], "
+ "[VENDOR BATCH NUMBER], "
+ "[VENDOR NUMBER], "
+ "[GOODS_SUPPLIER_NUMBER], "
+ "[EXPIRATION DATE]"
+ "[INSTIME]) VALUES (?,?,?,?,NULL,?,?)");
//Perform select / open Cursor
ResultSet rs = ps.executeQuery()) {
int batchnr = 0;
int MAXBATCH = 100;
while(rs.next()) {
//Set into INSERT the values we SELECTEd
ins.setInt(1, rs.getInt("MATERIAL NUMBER"));
ins.setInt(2, rs.getInt("BATCH NUMBER"));
ins.setInt(3, rs.getInt("VENDOR BATCH NUMBER"));
ins.setInt(4, rs.getInt("VENDOR NUMBER"));
ins.setTimestamp(5, rs.getTimestamp("EXPIRATION DATE"));
ins.setTimestamp(6, rs.getTimestamp("MODIFIED_DATETIME"));
//Add to Batch (you could executeUpdate here but if you have los of rows...)
ins.addBatch();
if(++batchnr % MAXBATCH == 0) {
ins.executeBatch();
}
}
//if number of rows was not aligned on MAXBATCH size...
ins.executeBatch();
}
}
}
请注意，Oracle和SQL-Server对包含空格的列名使用不同的转义。 Oracle需要"COLUMN NAME"而SQL-Server需要[COLUMN NAME]。
祝你好运。
修改
适应您的真实参数类型：
//Set into INSERT the values we SELECTEd
ins.setString(1, rs.getString("MATERIAL_NUMBER"));
ins.setString(2, rs.getString("BATCH_NUMBER"));
ins.setString(3, rs.getString("VENDOR_BATCH_NUMBER"));
ins.setString(4, rs.getString("VENDOR_NUMBER"));
ins.setString(5, rs.getString("GOODS_SUPPLIER_NUMBER"));
//6th value is always null as specified in INSERT
ins.setTimestamp(6, rs.getTimestamp("MODIFIED_DATETIME"));
答案 1 :(得分：-1)
所以现在我收到此错误：列名GOODS_SUPPLIER_NUMBER无效。因此，这是列为null的列之一，因为源连接中不存在此列。以下是提货商品编号的代码。我知道我非常接近。关于这个的任何想法？ 谢谢Sonny
private static void copyMaterialBatch(Connection sourceCon, Connection targetCon) throws SQLException {
//Try-with-Resource to close all cursors once we're done
try(//SELECT from source
PreparedStatement ps = sourceCon.prepareStatement(
"SELECT [MATERIAL_NUMBER], "
+ " [BATCH_NUMBER], "
+ " [VENDOR_BATCH_NUMBER], "
+ " [VENDOR_NUMBER], "
+ " [EXPIRATION_DATE], "
+ " [MODIFIED_DATETIME] FROM dbo.MATERIAL_BATCH_VIEW");
//INSERT into target
PreparedStatement ins = targetCon.prepareStatement(
"INSERT INTO MATERIAL_BATCH(MATERIAL_NUMBER, "
+ "BATCH_NUMBER, "
+ "VENDOR_BATCH_NUMBER, "
+ "VENDOR_NUMBER, "
**+ "GOODS_SUPPLIER_NUMBER, "**
+ "EXPIRATION_DATE"
+ "INSTIME) VALUES (?,?,?,?,NULL,?,?)");
//Perform select / open Cursor
ResultSet rs = ps.executeQuery()) {
int batchnr = 0;
int MAXBATCH = 1000;
while(rs.next()) {
//Set into INSERT the values we SELECTEd
ins.setString(1, rs.getString("MATERIAL_NUMBER"));
ins.setString(2, rs.getString("BATCH_NUMBER"));
ins.setString(3, rs.getString("VENDOR_BATCH_NUMBER"));
ins.setString(4, rs.getString("VENDOR_NUMBER"));
ins.setString(5, rs.getString("GOODS_SUPPLIER_NUMBER"));
ins.setString(6, rs.getString("EXPIRATION_DATE"));
ins.setTimestamp(7, rs.getTimestamp("MODIFIED_DATETIME"));
//Add to Batch (you could executeUpdate here but if you have los of rows...)
ins.addBatch();
if(++batchnr % MAXBATCH == 0) {
ins.executeBatch();
}
}
所以当我删除GOODS_SUPPLIER_NUMBER时，我的插入语句现在看起来已经完整了：
try(//SELECT from source
PreparedStatement ps = sourceCon.prepareStatement(
"SELECT [PLANT], "
+ "[MATERIAL_NUMBER], "
+ "[MATERIAL_DESC], "
+ "[MODIFIED_DATETIME] FROM dbo.MATERIAL_MASTER_VIEW");
//INSERT into target
PreparedStatement ins = targetCon.prepareStatement(
"INSERT INTO MATERIAL_BATCH(MATERIAL_NUMBER, "
+ "BATCH_NUMBER, "
+ "VENDOR_BATCH_NUMBER, "
+ "VENDOR_NUMBER, "
+ "EXPIRATION_DATE"
+ "INSTIME) VALUES (?,?,?,?,?,?)");
//Perform select / open Cursor
ResultSet rs = ps.executeQuery()) {
int batchnr = 0;
int MAXBATCH = 1000;
while(rs.next()) {
//Set into INSERT the values we SELECTEd
ins.setString(1, rs.getString("MATERIAL_NUMBER"));
ins.setString(2, rs.getString("BATCH_NUMBER"));
ins.setString(3, rs.getString("VENDOR_BATCH_NUMBER"));
ins.setString(4, rs.getString("VENDOR_NUMBER"));
ins.setString(5, rs.getString("EXPIRATION_DATE"));
ins.setTimestamp(6, rs.getTimestamp("MODIFIED_DATETIME"));
所以现在insert语句中有6个值与ins.setString部分中的6个值匹配。
我得到的错误是：java.sql.BatchUpdateException：ORA-00913：值太多
我认为最后一栏，INSTIME与MODIFIED_DATETIME之间存在不匹配。
我将再次确保给你这个答案的功劳。我只是不想和代码来回走动所以我把它放在我回答自己问题的地方。再次感谢。
非常感谢你。那很有效。还有一件事。所以我有Material Batch，Material Master和Vendor。出于某种原因，我收到供应商的错误。错误是：列名“VENDOR_NAME”无效 以下是供应商的代码：
private static void copyVendor(Connection sourceCon, Connection targetCon) throws SQLException {
//Try-with-Resource to close all cursors once we're done
try(//SELECT from source
PreparedStatement ps = sourceCon.prepareStatement(
"SELECT [VENDOR_NUMBER], "
+ "[VENDOR_NAME], "
+ "[MODIFIED_DATETIME] FROM dbo.VENDOR_VIEW");
//INSERT into target
PreparedStatement ins = targetCon.prepareStatement(
"INSERT INTO VENDOR(VENDOR_NUMBER, "
+ "VENDOR_NAME, "
+ "INSTIME) VALUES (?,?,?)");
//Perform select / open Cursor
ResultSet rs = ps.executeQuery()) {
int vendornr = 0;
int MAXVENDOR = 1000;
while(rs.next()) {
//Set into INSERT the values we SELECTEd
ins.setString(1, rs.getString("VENDOR_NUMBER"));
ins.setString(2, rs.getString("VENDOR_NAME"));
ins.setTimestamp(3, rs.getTimestamp("MODIFIED_DATETIME"));
//Add to Batch (you could executeUpdate here but if you have los of rows...)
ins.addBatch();
if(++vendornr % MAXVENDOR == 0) {
ins.executeBatch();
}
}
//if number of rows was not aligned on MAXBATCH size...
ins.executeBatch();
}
}
看不清楚我在这里缺少什么。我有三列，VENDOR_NUMBER，VENDOR_NAME和MODIFIED_DATETIME。我知道拼写是正确的。这更像是“第二眼”的情况。大声笑。再次感谢