在相同跨度和相同竖向荷载作用下,三铰拱的矢高f愈大,推力H就愈小。
查看答案
胡锦涛于5年9月15日在联合国成立60周年首脑会议上的讲话中增添了()的新目标。
A. 和平共处五项原则
B. 共建和谐世界
C. 平等互利
D. 互不干涉内政
秦汉三国时期将武艺做为竞技项目来鼓舞士气娱乐军士,出现了()、()项目。
A. 手搏
B. 相扑
C. 角抵
D. 散打
县级以上人民政府的()应当加强对执法人员食品安全法律、法规、标准和专业知识与执法能力等的培训,并组织考核。
A. 卫生行政部门
B. 食品药品监督管理部门
C. 食品检验机构
D. 工商行政部门
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?()
A. Examine the Active Session History (ASH) reports for the time period of the ETL or batch reporting runs.
B. Enable SQL tracing for the queries in the ETL and batch reporting queries and gather diagnostic data from the trace file.
C. Enable real-time SQL monitoring for ETL jobs and gather diagnostic data from the V$SQL_MONITOR view.
D. Enable real-time database operation monitoring using the DBMS_SQL_MONITOBEGIN_OPERATION function, and then use the DBMS_SQL_MONITOREPORT_SQL_MONITOR function to view the required information.