如何重建控制文件Control File

1. 运行： alter database backup controlfile to trace;

2. 在%oracle_base%\oradata\%oracle_sid%\udump下找到刚刚创建的trc文件，打开它。可以看到里面包含了两段sql脚本。

-- Below are two sets of SQL statements, each of which creates a new

-- control file and uses it to open the database. The first set opens

-- the database with the NORESETLOGS option and should be used only if

-- the current versions of all online logs are available. The second

-- set opens the database with the RESETLOGS option and should be used

-- if online logs are unavailable.

-- The appropriate set of statements can be copied from the trace into

-- a script file, edited as necessary, and executed when there is a

-- need to re-create the control file.

--

-- 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 "EPCIT" NORESETLOGS ARCHIVELOG

MAXLOGFILES 16

MAXLOGMEMBERS 3

MAXDATAFILES 100

MAXINSTANCES 8

MAXLOGHISTORY 454

LOGFILE

GROUP 1 'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITREDO01.LOG' SIZE 10M,

GROUP 2 'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITREDO02.LOG' SIZE 10M,

GROUP 3 'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITREDO03.LOG' SIZE 10M

-- STANDBY LOGFILE

DATAFILE

'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITSYSTEM01.DBF',

'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITUNDOTBS01.DBF',

'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITSYSAUX01.DBF',

'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITBLOBS01.DBF',

'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITINDEX01.DBF',

'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITUSERS01.DBF',

'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITWCAUDIT01.DBF'

CHARACTER SET UTF8

;

-- Configure RMAN configuration record 1

VARIABLE RECNO NUMBER;

EXECUTE :RECNO := SYS.DBMS_BACKUP_RESTORE.SETCONFIG('CHANNEL','DEVICE TYPE DISK MAXPIECESIZE 100 M');

-- Configure RMAN configuration record 3

VARIABLE RECNO NUMBER;

EXECUTE :RECNO := SYS.DBMS_BACKUP_RESTORE.SETCONFIG('CONTROLFILE AUTOBACKUP','ON');

-- Configure RMAN configuration record 4

VARIABLE RECNO NUMBER;

EXECUTE :RECNO := SYS.DBMS_BACKUP_RESTORE.SETCONFIG('BACKUP OPTIMIZATION','ON');

-- Configure RMAN configuration record 5

VARIABLE RECNO NUMBER;

EXECUTE :RECNO := SYS.DBMS_BACKUP_RESTORE.SETCONFIG('DEVICE TYPE','DISK BACKUP TYPE TO COMPRESSED BACKUPSET PARALLELISM 1');

-- 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 'D:\ORACLE\FLASH_RECOVERY_AREA\EPCIT\ARCHIVELOG\2009_02_22\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

-- All logs need archiving and a log switch is needed.

ALTER SYSTEM ARCHIVE LOG ALL;

-- 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 'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITTEMP01.DBF'

SIZE 209715200 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 "EPCIT" RESETLOGS ARCHIVELOG

MAXLOGFILES 16

MAXLOGMEMBERS 3

MAXDATAFILES 100

MAXINSTANCES 8

MAXLOGHISTORY 454

LOGFILE

GROUP 1 'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITREDO01.LOG' SIZE 10M,

GROUP 2 'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITREDO02.LOG' SIZE 10M,

GROUP 3 'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITREDO03.LOG' SIZE 10M

-- STANDBY LOGFILE

DATAFILE

'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITSYSTEM01.DBF',

'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITUNDOTBS01.DBF',

'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITSYSAUX01.DBF',

'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITBLOBS01.DBF',

'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITINDEX01.DBF',

'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITUSERS01.DBF',

'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITWCAUDIT01.DBF'

CHARACTER SET UTF8

;

-- Configure RMAN configuration record 1

VARIABLE RECNO NUMBER;

EXECUTE :RECNO := SYS.DBMS_BACKUP_RESTORE.SETCONFIG('CHANNEL','DEVICE TYPE DISK MAXPIECESIZE 100 M');

-- Configure RMAN configuration record 3

VARIABLE RECNO NUMBER;

EXECUTE :RECNO := SYS.DBMS_BACKUP_RESTORE.SETCONFIG('CONTROLFILE AUTOBACKUP','ON');

-- Configure RMAN configuration record 4

VARIABLE RECNO NUMBER;

EXECUTE :RECNO := SYS.DBMS_BACKUP_RESTORE.SETCONFIG('BACKUP OPTIMIZATION','ON');

-- Configure RMAN configuration record 5

VARIABLE RECNO NUMBER;

EXECUTE :RECNO := SYS.DBMS_BACKUP_RESTORE.SETCONFIG('DEVICE TYPE','DISK BACKUP TYPE TO COMPRESSED BACKUPSET PARALLELISM 1');

-- 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 'D:\ORACLE\FLASH_RECOVERY_AREA\EPCIT\ARCHIVELOG\2009_02_22\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 'D:\PTC\OCU_8.0\ORADATA\EPCIT\EPCITTEMP01.DBF'

SIZE 209715200 REUSE AUTOEXTEND ON NEXT 655360 MAXSIZE 32767M;

-- End of tempfile additions.

3. 把"Set #1. NORESETLOGS case"下的sql拷贝出来，存为reCreateCtl.sql

4. 以sysdba登陆，shutdown immediate。然后删除所有控制文件。再运行reCreateCtl.sql。