多项选择题
A.Decrease the IDLE_TIME resource limit in the profile assigned to the blocking users.
B.Use Database Resource Manager to automatically log out sessions that block others and are idle.
C.Set the limit in the profile of blocking users to control the number of blocks to be accessed in a session.
D.Decrease the maximum number of interested transaction list （ITL） slots for the segments on which the blocking user performs the transaction
多项选择题 WhichtwostatementsdescribegoodpracticesforanapplicationdevelopertoreducelockingconflictsinOracledatabase（）
单项选择题 User A executes the following command to drop a large table in your database： SQL> DROP TABLE trans； While the drop table operation is in progress， user B executes the following command on the same table： SQL> DELETE FROM trans WHERE tr_type=’SL’； Which statement is true regarding the DELETE command（）
单项选择题 You suspect unauthorized data manipulation language （DML） operations on a particular table. Youwant to track users who are performing the transactions and the values used in the transactions. You alsoplan to transfer these values to another table for analysis. How would you achieve this（）