多项选择题
Which two statements are true about a job chain? （）(Choose two.)
A. A job chain can contain a nested chain of jobs.
B. The jobs in a job chain cannot have more than one dependency.
C. A job of the CHAIN type can be run using event-based or time-based schedules.
D. The jobs in a job chain can be executed only by using the events generated by the Scheduler
相关考题
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多项选择题
Whichclientrequeststothedatabasecanbecapturedasapartoftheworkloadcapture？（）
A. flashback query
B. distributed transactions
C. logging in and logging out of sessions
D. all DDL statements having bind variables
E. direct path load of data from external files -
单项选择题
Sales details are being stored on a daily basis in the SALES_2007 table. A large amount of data is added to the table daily. To save disk space，you issued the following command： ALTER TABLE sales_2007 COMPRESS FOR ALL OPERATIONS； What would be the outcome of this command？（）
A. It produces an error because data already exists in the table.
B. It produces an error because compression can be enabled at table creation only.
C. It compresses all data added or modified henceforth but the existing data in the table is not compressed immediately.
D. It immediately compresses all existing data as well as new data， resulting from either fresh additions or modifications to existing data. -
单项选择题
In your production database, users report that they are unable to generate reports on an important table because it does not contain any data. While investigating the reason, you realize that another user executed the TRUNCATE TABLE command, which accidentally caused the data to be lost. Now you want to recover the lost data of the table without affecting objects in other schemas. Which method must you use to recover the lost data?（）
A. Complete Recovery with online redo log
B. Complete Recovery with archived redo log
C. Tablespace Point-in-Time Recovery (TSPITR)
D. Incomplete Recovery with system change number (SCN)
