多项选择题
A. Flashback queries
B. Shared server requests
C. Login and logoff activities of sessions
D. Direct path load of data from external files by using utilities such as SQL *loader
E. Data definition language (DDL) and data manipulation language (DML) operations
单项选择题 You issued the following command on the temporary tablespace LMTEMP in your database： SQL>ALTER TABLESPACE lmtemp SHRINK SPACE KEEP 20M； Which requirement must be fulfilled for this command to succeed？（）
多项选择题 The RECYCLEBIN parameter is set to ON for your database. You drop a table, PRODUCTS, from the SCOTT schema. Which two statements are true regarding the outcome of this action? （）(Choose two)
单项选择题 Examine the following command: SQL> ALTER TABLE booking SHRINK SPACE COMPACT; Which activity is performed when the preceding command is executed?（）