Which statements are true regarding the USERS tablespace（） 
- A、A bitmap is used to record free extents.
- B、Free extents information is managed within the tablespace.
- C、Free extents information is managed in the SYSAUX tablespace.
- D、The data dictionary tables are updated when extents are allocated or deallocated
正确答案:A,B
答案解析:有
微信扫一扫手机做题