多项选择题 You are planning the creation of a new multitenant container database (CDB) and want to store the ROOT and SEED container data files in separate directories. You plan to create the database using SQL statements. Which three techniques can you use to achieve this?（）

单项选择题 You conned using SQL Plus to the root container of a multitenant container database (CDB) with SYSDBA privilege. The CDB has several pluggable databases (PDBs) open in the read/write mode. There are ongoing transactions in both the CDB and PDBs. What happens alter issuing the SHUTDOWN TRANSACTIONAL statement?（）

单项选择题 An application accesses a small lookup table frequently. You notice that the required data blocks are getting aged out of the default buffer cache. How would you guarantee that the blocks for the table never age out?（）