控制文件

Posted 2020-07-28 侯志清-江西南昌

查看控制文件控制信息

SQL> select * from v$controlfile_record_section;

TYPE RECORD_SIZE RECORDS_TOTAL RECORDS_USED FIRST_INDEX LAST_INDEX LAST_RECID

---------------------------- ----------- ------------- ------------ ----------- ---------- ----------

DATABASE 316 1 1 0 0 0

CKPT PROGRESS 8180 11 0 0 0 0

REDO THREAD 256 8 1 0 0 0

REDO LOG 72 16 3 0 0 3

DATAFILE 520 100 9 0 0 120

FILENAME 524 2298 14 0 0 0

TABLESPACE 68 100 7 0 0 3

TEMPORARY FILENAME 56 100 1 0 0 10

RMAN CONFIGURATION 1108 50 1 0 0 7

LOG HISTORY 56 292 181 1 181 181

OFFLINE RANGE 200 163 0 0 0 0

ARCHIVED LOG 584 280 35 1 35 35

BACKUP SET 40 409 15 1 15 15

BACKUP PIECE 736 200 15 1 15 15

BACKUP DATAFILE 200 245 23 1 23 23

BACKUP REDOLOG 76 215 35 1 35 35

DATAFILE COPY 736 200 1 1 1 1

BACKUP CORRUPTION 44 371 0 0 0 0

COPY CORRUPTION 40 409 0 0 0 0

DELETED OBJECT 20 818 46 1 46 46

PROXY COPY 928 246 0 0 0 0

BACKUP SPFILE 124 131 3 1 3 3

DATABASE INCARNATION 56 292 2 1 2 2

FLASHBACK LOG 84 2048 0 0 0 0

RECOVERY DESTINATION 180 1 1 0 0 0

INSTANCE SPACE RESERVATION 28 1055 1 0 0 0

REMOVABLE RECOVERY FILES 32 1000 0 0 0 0

RMAN STATUS 116 141 33 1 33 33

THREAD INSTANCE NAME MAPPING 80 8 8 0 0 0

MTTR 100 8 1 0 0 0

DATAFILE HISTORY 568 57 0 0 0 0

STANDBY DATABASE MATRIX 400 31 31 0 0 0

GUARANTEED RESTORE POINT 212 2048 0 0 0 0

RESTORE POINT 212 2083 0 0 0 0

DATABASE BLOCK CORRUPTION 80 8384 0 0 0 0

ACM OPERATION 104 64 6 0 0 0

FOREIGN ARCHIVED LOG 604 1002 0 0 0 0

 

37 rows selected.

 

RECORD_SIZE RECORDS_TOTAL RECORDS_USED

RECORD_SIZE记录的大小

RECORDS_TOTAL可记录数的总量

RECORDS_USED已经使用的数量

下面使用如下记录来说明

TYPE RECORD_SIZE RECORDS_TOTAL RECORDS_USED FIRST_INDEX LAST_INDEX LAST_RECID

REDO LOG 72 16 3 0 0 3

redo 最多可创建16个日志组，已经创建了3个，如果要创建16个以上就需要重建控制文件，修改参数

SQL> alter database backup controlfile to trace as ‘/home/oracle/crontol_trace.trc‘;

 

CREATE CONTROLFILE REUSE DATABASE "PROD" RESETLOGS ARCHIVELOG

MAXLOGFILES 16 --将这个值改大

MAXLOGMEMBERS 3

MAXDATAFILES 100

MAXINSTANCES 8

MAXLOGHISTORY 292

LOGFILE

GROUP 1 ‘/u01/app/oracle/oradata/prod/redo01.log‘ SIZE 50M BLOCKSIZE 512,

GROUP 2 ‘/u01/app/oracle/oradata/prod/redo02.log‘ SIZE 50M BLOCKSIZE 512,

GROUP 3 ‘/u01/app/oracle/oradata/prod/redo03.log‘ SIZE 50M BLOCKSIZE 512

-- STANDBY LOGFILE

DATAFILE

‘/u01/app/oracle/oradata/prod/system01.dbf‘,

‘/u01/app/oracle/oradata/prod/sysaux01.dbf‘,

‘/u01/app/oracle/oradata/prod/undotbs01.dbf‘,

‘/u01/app/oracle/oradata/prod/users01.dbf‘,

‘/u01/app/oracle/oradata/prod/example01.dbf‘,

‘/u01/app/oracle/oradata/prod/hzqtbs.dbf‘,

‘/u01/app/oracle/oradata/prod/hzqtbs02.dbf‘,

‘/u01/app/oracle/oradata/prod/hzqtbs01.dbf‘,

‘/u01/app/oracle/oradata/prod/hzqtbs03.dbf‘

CHARACTER SET AL32UTF8

;