DB스토리

rman backup => backup as compressed backupset database userManaged backup=> 파일 copy를 이용. 하드웨어를 바꿀때 의미. 미러 DB. userManaged backup 절차 [root@orcl oracle]# mkdir /backup [root@orcl oracle]# chown oracle:oinstall /backup S SYS> spool /backup/fileList S SYS> select name from v$datafile; NAME -------------------------------------------------------------------------------- /u01/app/oracle/oradata/ORCL/d..

DB 청소 schema tablespace datafile크기 Instance recovery = redo + undo 적용 checkpoint = buffer cache 저장, 강제로 할때는 alter system set checkpoint; Mean-Time-Between-Failures(MTBF) : 길수록 좋음 Mean-Time-To-Recover(MTTR) : 짧을 수록 좋음 :오라클용어로=> Instance Recorvery시간으로 해석 Categories of Failures Statement failure : 구문 에러 User process failure Network failure User error Instance failure Media failure by BNR로 고침 Multip..

통상적인 parameter 파일 백업 create pfile='/home/oracle/_setting/initorcl.ora.090519_1' from spfile; 고장내기-- [oracle@orcl ~]$ rm /u01/app/oracle/product/10.2.0/db_1/dbs/spfileorcl.ora S SYS> shutdown abort ORACLE instance shut down. S SYS> startup ORA-01078: failure in processing system parameters LRM-00109: could not open parameter file '/u01/app/oracle/product/10.2.0/db_1/dbs/initorcl.ora' 백업한 paramete..