客户的32位Oracle数据库系统磁盘出现损坏，庆幸的是Oracle数据库完好无损。客户要求将数据库迁移到新购的设备上，新设备内存为64G，系统RedHat 6.2 64位，直接拷贝数据文件肯定是不行的，因为Oracle 的存储过程在32位和64位平台下的wordsize不同，虽然用户的存储过程可以在使用时自行完成重新编译，但Oracle的系统存储过程确需要我们来手工转换。
在CentOS 6.4下安装Oracle 11gR2(x64)
总结，迁移过程如下：
1：备份Oracle数据库
2：备份控制文件到trace（以备需要新建控制文件）
SQL> alter database backup controlfile to trace;
Database altered.
SQL> oradebug setmypid
Statement processed.
SQL> oradebug tracefile_name
/u01/app/admin/easy/udump/easy_ora_18830.trc
SQL> host cat /u01/app/admin/easy/udump/easy_ora_18830.trc
......
--
-- Set #1. NORESETLOGS case
--
-- The following commands will create a new control file and use it
-- to open the database.
-- Data used by Recovery Manager will be lost.
-- Additional logs may be required for media recovery of offline
-- Use this only if the current versions of all online logs are
-- available.
-- After mounting the created controlfile, the following SQL
-- statement will place the database in the appropriate
-- protection mode:
-- ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE PERFORMANCE
STARTUP NOMOUNT
CREATE CONTROLFILE REUSE DATABASE "EASY" NORESETLOGS NOARCHIVELOG
MAXLOGFILES 16
MAXLOGMEMBERS 3
MAXDATAFILES 100
MAXINSTANCES 8
MAXLOGHISTORY 292
LOGFILE
GROUP 1 '/oradata/easy/redo01.log' SIZE 11200K,
GROUP 2 '/oradata/easy/redo02.log' SIZE 11200K
-- STANDBY LOGFILE
DATAFILE
'/oradata/easy/system01.dbf',
'/oradata/easy/undotbs01.dbf',
'/oradata/easy/sysaux01.dbf',
'/oradata/easy/users01.dbf'
CHARACTER SET ZHS16GBK
;
-- Commands to re-create incarnation table
-- Below log names MUST be changed to existing filenames on
-- disk. Any one log file from each branch can be used to
-- re-create incarnation records.
-- ALTER DATABASE REGISTER LOGFILE '/u01/app/flash_recovery_area/EASY/archivelog/2014_11_05/o1_mf_1_1_%u_.arc';
-- ALTER DATABASE REGISTER LOGFILE '/u01/app/flash_recovery_area/EASY/archivelog/2014_11_05/o1_mf_1_1_%u_.arc';
-- Recovery is required if any of the datafiles are restored backups,
-- or if the last shutdown was not normal or immediate.
RECOVER DATABASE
-- Database can now be opened normally.
ALTER DATABASE OPEN;
-- Commands to add tempfiles to temporary tablespaces.
-- Online tempfiles have complete space information.
-- Other tempfiles may require adjustment.
ALTER TABLESPACE TEMP ADD TEMPFILE '/oradata/easy/temp01.dbf'
SIZE 20971520 REUSE AUTOEXTEND ON NEXT 655360 MAXSIZE 32767M;
-- End of tempfile additions.
--
-- Set #2. RESETLOGS case
--
-- The following commands will create a new control file and use it
-- to open the database.
-- Data used by Recovery Manager will be lost.
-- The contents of online logs will be lost and all backups will
-- be invalidated. Use this only if online logs are damaged.
-- After mounting the created controlfile, the following SQL
-- statement will place the database in the appropriate
-- protection mode:
-- ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE PERFORMANCE
STARTUP NOMOUNT
CREATE CONTROLFILE REUSE DATABASE "EASY" RESETLOGS NOARCHIVELOG
MAXLOGFILES 16
MAXLOGMEMBERS 3
MAXDATAFILES 100
MAXINSTANCES 8
MAXLOGHISTORY 292
LOGFILE
GROUP 1 '/oradata/easy/redo01.log' SIZE 11200K,
GROUP 2 '/oradata/easy/redo02.log' SIZE 11200K
-- STANDBY LOGFILE
DATAFILE
'/oradata/easy/system01.dbf',
'/oradata/easy/undotbs01.dbf',
'/oradata/easy/sysaux01.dbf',
'/oradata/easy/users01.dbf'
CHARACTER SET ZHS16GBK
;
-- Commands to re-create incarnation table
-- Below log names MUST be changed to existing filenames on
-- disk. Any one log file from each branch can be used to
-- re-create incarnation records.
-- ALTER DATABASE REGISTER LOGFILE '/u01/app/flash_recovery_area/EASY/archivelog/2014_11_05/o1_mf_1_1_%u_.arc';
-- ALTER DATABASE REGISTER LOGFILE '/u01/app/flash_recovery_area/EASY/archivelog/2014_11_05/o1_mf_1_1_%u_.arc';
-- Recovery is required if any of the datafiles are restored backups,
-- or if the last shutdown was not normal or immediate.
RECOVER DATABASE USING BACKUP CONTROLFILE
-- Database can now be opened zeroing the online logs.
ALTER DATABASE OPEN RESETLOGS;
-- Commands to add tempfiles to temporary tablespaces.
-- Online tempfiles have complete space information.
-- Other tempfiles may require adjustment.
ALTER TABLESPACE TEMP ADD TEMPFILE '/oradata/easy/temp01.dbf'
SIZE 20971520 REUSE AUTOEXTEND ON NEXT 655360 MAXSIZE 32767M;
-- End of tempfile additions.
--