填空题Which command （without options） would you use to display how much space is available on all mounted partitions？（）
填空题
Which command （without options） would you use to display how much space is available on all mounted partitions？（）
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单选题In one of your online transaction processing （OLTP） applications， users are manipulating and querying a database table simultaneously. From the Segment Advisor， you find that one of the tables is highly fragmented and you want to shrink the table immediately without affecting the currently active queries. Which option would you use with the ALTER TABLE command to achieve this objective？（）A REBUILDB CASCADEC TRUNCATED ROW MOVEMENTE SHRINK SPACE COMPACTF SHRINK SPACE CASCADE
单选题Which method would you use to undo the changes made by a particular transaction without affecting the changes made by other transactions？（）A point-in-time recoveryB execute the ROLLBACK command with transaction numberC flashback the database to before the transaction was committedD determine all the necessary undo SQL statements from FLASHBACK_TRANSACTION_QUERY and use them for recovery
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单选题When shrinking a table segment， you choose to shrink all the indexes for that table using the SHRINK SPACE command. Which clause should you use？（）A INCLUDING DEPENDENCIESB INCLUDING DEPENDENCIES CASCADEC COMPACTD CASCADEE None of the above
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