IBM DB2 数据复制迁移方法

背景：需要更改数据库表空间，或者需要将数据库中所有表的数据迁移到一个新的数据库中。步骤：1.通过db2控制台(db2cc)选中源数据库中的所有表，将其导出成DDL脚本;2.根据需要对脚本进行必要的修改，譬如更改表空间为GATHER;3.新建数据库，新建DMS表空间：GATHER;4.将DDL脚本在此数据库中执行;5.编写代码查询源数据库中的所有表，自动生成export脚本;6.编写代码查询源数据库中的所有表，自动生成import脚本;7.连接源数据库执行export脚本;8.连接目标数据库执行import脚本;附录1:生成export脚本代码示例：/*** 创建导出脚本* @param conn* @param creator　表创建者* @param filePath*/* 创建导出脚本* @param conn* @param creator　表创建者* @param filePathpublic void createExportFile(Connection conn,String creator,String filePath) throws Exception {DBBase dbBase = new DBBase(conn);String selectTableSql = "select name from sysibm.systables where creator = '" + creator + "' and type='T'";try {dbBase.executeQuery(selectTableSql);} catch (Exception ex) {throw ex;} finally {dbBase.close();}DBResult result = dbBase.getSelectDBResult();List list = new ArrayList();while (result.next()) {String table = result.getString(1);list.add(table);}StringBuffer sb = new StringBuffer();String enterFlag = "";for (int i = 0; i < list.size();i++) {String tableName = (String)list.get(i);sb.append("db2 "export to aa" + String.valueOf(i+1)+ ".ixf of ixf select * from " + tableName + """);sb.append(enterFlag);}String str = sb.toString();FileUtility.saveStringToFile(filePath, str, false);}附录2:生成import脚本代码示例/*** 创建装载脚本* @param conn* @param creator　表创建者* @param filePath*/public void createLoadFile(Connection conn,String creator,String filePath) throws Exception {DBBase dbBase = new DBBase(conn);String selectTableSql = "select name from sysibm.systables where creator = '" + creator + "' and type='T'";try {dbBase.executeQuery(selectTableSql);} catch (Exception ex) {throw ex;} finally {dbBase.close();}DBResult result = dbBase.getSelectDBResult();List list = new ArrayList();while (result.next()) {String table = result.getString(1);list.add(table);}StringBuffer sb = new StringBuffer();String enterFlag = "";for (int i = 0; i < list.size();i++) {String tableName = (String)list.get(i);sb.append("db2 "load from aa" + String.valueOf(i+1)+ ".ixf of ixf into " + tableName + " COPY NO without prompting "");sb.append(enterFlag);}String str = sb.toString();FileUtility.saveStringToFile(filePath, str, false);}附录3:export脚本示例db2connecttotestdbusertestpasswordtestdb2"exporttoaa1.ixfofixfselect*fromtable1"db2"exporttoaa2.ixfofixfselect*fromtable2"db2connectreset附录4:import脚本示例db2connecttotestdbusertestpasswordtestdb2"loadfromaa1.ixfofixfreplaceintotable1COPYNOwithoutprompting"db2"loadfromaa2.ixfofixfreplaceintotable2COPYNOwithoutprompting"db2connectreset