333.Which command would you use to determine what database backups are currently available for restore?
A. list database backup;
B. report database backup;
C. list backup of database;
D. list summary backup;
E. report backup of database;
Answer: C
答案解析：
使用 list backup of database列出数据库的现在可用的备份。
其他答案语法错误：
RMAN> list database backup;
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00558: error encountered while parsing input commands
RMAN-01009: syntax error: found "database": expecting one of: "all, archivelog, backed, backuppiece, backupset, backup, completed, controlfilecopy, copy, datafilecopy, db_unique_name, device, expired, failure, foreign, global, incarnation, like, proxy, recoverable, restore, script, tag"
RMAN-01007: at line 1 column 7 file: standard input
RMAN> report database backup;
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00558: error encountered while parsing input commands
RMAN-01009: syntax error: found "database": expecting one of: "device, need, obsolete, schema, unrecoverable"
RMAN-01007: at line 1 column 8 file: standard input
RMAN> list summary backup;
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00558: error encountered while parsing input commands
RMAN-01009: syntax error: found "summary": expecting one of: "all, archivelog, backed, backuppiece, backupset, backup, completed, controlfilecopy, copy, datafilecopy, db_unique_name, device, expired, failure, foreign, global, incarnation, like, proxy, recoverable, restore, script, tag"
RMAN-01007: at line 1 column 6 file: standard input
RMAN> report backup of database;
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00558: error encountered while parsing input commands
RMAN-01009: syntax error: found "backup": expecting one of: "device, need, obsolete, schema, unrecoverable"
RMAN-01007: at line 1 column 9 file: standard input