多项选择题 WhichtwostatementsregardingtheFlashbackTablefeaturearecorrect？（）

多项选择题 Which two client requests are captured during database replay Capture?（） (Choose two)

单项选择题 You issued the following command on the temporary tablespace LMTEMP in your database：   SQL>ALTER TABLESPACE lmtemp SHRINK SPACE KEEP 20M；   Which requirement must be fulfilled for this command to succeed？（）