If you CROSSCHECK the backup piece that was previously marked as EXPIRED but is now available， what would the status of this backup piece be in the RMAN repository？（）

Asaresultofamediafailure，thecurrentonlineredologgroupis...

单项选择题As a result of a media failure， the current online redo log group is corrupted. The database crashes， as the current online group is inaccessible. Which type of incomplete recovery are you most likely to perform？ （）

WhichOraclebackgroundprocessisresponsibleforprovidingin...

单项选择题Which Oracle background process is responsible for providing information about the instance name associated with the service handlers and services to the listener？（）

Whichofthefollowingoptionsenablesausertogetauthenticate...

单项选择题Which of the following options enables a user to get authenticated though a single password instead of using multiple passwords？（）