A. If an RMAN BACKUP VALIDATE command takes roughly the same time as an actual backup, then read I/O is a likely bottleneck.

B. If an RMAN BACKUP VALIDATE command takes noticeably less than an actual backup, then write I/O is a likely bottleneck.

C. If an RMAN BACKUP VALIDATE command takes roughly the same time as an actual backup, then both read and write I/O are likely bottlenecks.

D. Setting DBWR_IO_SLAVES to a non zero value can improve backup performance when using asynchronous I/O/

E. Setting DBWR_IO_SLAVES to a non zero value can improve backup performance when using synchronous I/O.

F. Data files with a high value in V$BACKUP_ASYNC_IO.SHORT_WAITS are a potential performance bottleneck when asynchronous I/O is used.

G. Data files with a high value in V$BACKUP_SYNC_IO.DISCRETE_BYTES_PER_SECOND are a potential performance bottleneck when synchronous I/O is used.

A. after losing all members of an inactive online redo log group

B. after losing a sysaux tablespace data file

C. after losing all copies of the control file

D. after losing all members of the current online redo log group

E. after losing an undo tablespace that is in use

A. database instance memory management and sizes

B. SQL statements

C. general operating system health

D. log writer performance

E. database writer performance

A. The RMAN LOG command line clause causes output issued during RMAN commandcompilation to be written to a log file and to standard output.

B. RMAN error stacks should be read from the bottom up as that is the order in which errors are generated.

C. RMAN error stacks should be read from the top down as that is the order in which errors are generated.

D. Media Management messages for SBT devices are written to an Oracletrace file.

E. The RMAN LOG command line clause causes output issued during RMAN command compilation to be written to a log file only.

F. Media Management messages for SBT devices are always written to sbtio.log.

A. REPORT SCHEMA 명령을 사용하여 과거 시간에 데이터베이스의 데이터 파일 및 테이블스페이스 나열

B. 단일 데이터베이스의 백업에 대한 사용자 정의 보고서 작성

C. RMAN 저장 스크립트 사용

D. BACKUP 명령과 함께 KEEP FOREVER 절 사용

E. 암호화된 백업 생성

F. REPORT SCHEMA 명령을 사용하여 데이터베이스의 현재 데이터 파일 및 테이블스페이스 나열