- 易迪拓培训,专注于微波、射频、天线设计工程师的培养
IBM DB2 数据复制迁移方法
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 public void createExportFile(Connection conn,String creator,String filePath) throws Exception { try { DBResult result = dbBase.getSelectDBResult(); } |
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 = "rn"; 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
db2 connect to testdb user test password test db2 "export to aa1.ixf of ixf select * from table1" db2 "export to aa2.ixf of ixf select * from table2" db2 connect reset |
附录4:import脚本示例
db2 connect to testdb user test password test db2 "load from aa1.ixf of ixf replace into table1 COPY NO without prompting " db2 "load from aa2.ixf of ixf replace into table2 COPY NO without prompting " db2 connect reset |
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