DB스토리

Archive log mode 확인 select log_mode from v$database; full backup 본 있을 것. rman target / list backup of database; rman 관련. RMAN> show all; using target database control file instead of recovery catalog RMAN configuration parameters are: CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default CONFIGURE BACKUP OPTIMIZATION OFF; # default CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default CONFIGURE CONTR..

에러난 파일 찾아주는 스크립트 select name, error from v$datafile join v$recover_file using (file#) / online 상태(open 상태) 에서 복구 ---1 고장내기 rm /u01/app/oracle/oradata/ORCL/datafile/o1_mf_example_53cr5v92_.dbf S SYS> create table x(x date) tablespace example; Table created. 에러 안나고 성공시 S SYS> alter system checkpoint; S SYS> @errFile NAME -----------------------------------------------------------------------------..

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..