多项选择题
A. Every SQL statement in the STS is considered only once for execution.
B. The SQL statements in the STS are executed concurrently to produce the execution plan and execution statistics.
C. The execution plan and execution statistics are computed for each SQL statement in the STS.
D. The effects of DDL and DML are considered to produce the execution plan and execution statistics.
多项选择题 The database is configured in ARCHIVELOG mode and regular complete database backups are taken. Theloss of which two types of files may require a recovery with the RESETLOGS option? （）(Choose two)
单项选择题 You observed the following output for a user session: What do you infer from the preceding output?（）
多项选择题 WhichstatementsaretrueregardingtheQueryResultCache？（）