单项选择题
A.The command produces an error.
B.The profile is dropped and current user sessions use the DEFAULT profile immediately.
C.The profile is dropped and only the subsequent user sessions use the DEFAULT profile.
D.The profile is dropped， the sessions are terminated， and the subsequent user sessions use theDEFAULT profile.
单项选择题 In your database instance， the user sessions are connected to the database server from the remotemachines. You want to achieve the following for these users： 1：The user account must be locked after four unsuccessful login attempts.PASSWORD_LOCK_TIME 2：The user must be prompted to change the password at regular intervals.PASSWORD_LIFE_TIME 3：The user may not have more than three simultaneous sessions.SESSIONS_PER_USER 4：The user session must automatically be logged off if more than 10 minutes elapsed time used.CONNECT_TIME How would you accomplish the above（）
单项选择题 View the Exhibit to observe the roles assigned to the SLP_REP user. Which statement is true about the assignment of the SELECT_CATALOG_ROLE role to the SLP_REPuser（）
单项选择题 View the Exhibit and examine the user information. The user has been granted CONNECT and RESOURCE roles and no individual system privileges. TheSL_REP user executes this command to create a table： SQL> CREATE TABLE orders（oid number（6）， odate date， ccode number（4）， oamt number（10，2）） TABLESPACE purchase_space； The PURCHASE_SPACE tablespace already exists in the database. Which statement describes theeffect of the command（）