20世纪末中国文学总的大背景是“（）”。
施工作业中，封堵设备不可以对输送（）介质的管线进行封堵作业。 航煤。 乙烯。 H
2S。 液氨。
You execute the following commands to audit database activities: SQL > ALTER SYSTEM SET AUDIT_TRIAL=DB, EXTENDED SCOPE=SPFILE; SQL > AUDIT SELECT TABLE, INSERT TABLE, DELETE TABLE BY JOHN By SESSION WHENEVER SUCCESSFUL; Which statement is true about the audit record that generated when auditing after instance restarts?（） One audit record is created for every successful execution of a SELECT, INSERT OR DELETE command on a table, and contains the SQL text for the SQL Statements.。 One audit record is created for every successful execution of a SELECT, INSERT OR DELETE command, and contains the execution plan for the SQL statements.。 One audit record is created for the whole session if john successfully executes a SELECT, INSERT, or DELETE command, and contains the execution plan for the SQL statements.。 One audit record is created for the whole session if JOHN successfully executes a select command, and contains the SQL text and bind variables used.。 One audit record is created for the whole session if john successfully executes a SELECT, INSERT,or DELETE command on a table, and contains the execution plan, SQL text, and bind variables used.。
1979年，上海文艺出版社编辑出版了《（）》作品集，收入50年代17位作家的旧作。
You have not configured Oracle Managed Files （OMF） in your database. You do not want to scan the entire datafile every time an incremental backup is performed. You decide to enable the block change tracking feature. Which statement should you use to enable the block change tracking feature？（） ALTER DATABASE ENABLE BLOCK CHANGE TRACKING。 ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING USING FILE
。 ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE 。 ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING。
You want to be notified when the space usage of an existing critical tablespace has reached 75% of the allocated space. Which option would you use to achieve this？（）
