You want to use te Coherence Java APIs to directly cached POJOs. Consider this snippet of code： NamedCache cache - CacheFactory.getCache（"mycache"）； cache.put（new Integer（I）f "hello"）； cache.put（T，"hi"）； cache.put（new Long（II），"hey"）； This code inserts three objects into the cache. Why ？（）
You want to display the titles of books that meet these criteria:
1. Purchased before January 21, 2001
2. Price is less then $500 or greater than $900
You want to sort the results by their data of purchase, starting with the most recently bought book.
Which statement should you use?（）
You want to display the titles of books that meet these criteria:
1. Purchased before January 21, 2001
2. Price is less then $500 or greater than $900
You want to sort the results by their data of purchase, starting with the most recently bought book. Which statement should you use? （）
No more having to buy expensive textbooks which you will only use for a year or two and then sell or _______ away.
Do you want to pay cash or sign the bill？这句话意思是（）。
You upgraded from a previous Oracle database version to Oracle Database version to Oracle Database12c. Your database supports a mixed workload. During the day, lots of insert, update, and deleteoperations are performed. At night, Extract, Transform, Load (ETL) and batch reporting jobs are run.
The ETL jobs perform certain database operations using two or more concurrent sessions.After the upgrade, you notice that the performance of ETL jobs has degraded. To ascertain the cause ofperformance degradation, you want to collect basic statistics such as the level of parallelism, totaldatabase time, and the number of I/O requests for the ETL jobs.
How do you accomplish this?（）
You notice a performance change in your production Oracle 12c database. You want to know which change caused this performance difference.
Which method or feature should you use?（）
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