將Oracle資料庫從32位平台遷移到64位

將Oracle資料庫從32位平台遷移到64位

客戶的32位Oracle資料庫系統磁碟出現損壞，慶幸的是Oracle資料庫完好無損。客戶要求將資料庫遷移到新購的裝置上，新裝置記憶體為64G，系統RedHat 6.2 64位，直接拷貝資料檔案肯定是不行的，因為Oracle 的預存程序在32位和64位平台下的wordsize不同，雖然使用者的預存程序可以在使用時自行完成重新編譯，但Oracle的系統預存程序確需要我們來手工轉換。

Oracle 單一實例 從32位 遷移到 64位 方法 

在CentOS 6.4下安裝Oracle 11gR2(x64)

Oracle 11gR2 在VMWare虛擬機器中安裝步驟

Debian 下 安裝 Oracle 11g XE R2

總結，遷移過程如下：

1：備份Oracle資料庫

2：備份控制檔案到trace（以備需要建立控制檔案）

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.
--

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