in your database instance， the STATISTICS_LEVEL initialization parameter is set to BASIC. What is the impactof this setting（） ["Optimizer statistics are collected automatically.","Only timed operating system （OS） statistics and plan execution statistics are collected.","The snapshots for the Automatic Workload Repository （AWR） are not generated automatically.","Snapshots cannot be collected manually by using the DBMS_WORKLOAD_REPOSITORY package.","The Oracle server dynamically generates the necessary statistics on tables as part of query optimization."]
我国域名注册实行的原则是（） ["优先注册","先申请先注册","商标注册","自动注册"]
关于施工现场临时照明的说法，正确的是（）。 ["一般场所宜选用额定电压为36V的照明器","灯具离地面高度低于2.5m等场所的照明，电源电压不得大于36V","潮湿和易触及带电体场所的照明，电源电压不得大于36V","金属卤化物灯具的安装高度宜在2m以上"]
水利水电建设工程竣工验收的成果是（），他也是工程移交的依据。 ["“竣工验收报告书”","“竣工验收合格书”","“竣工移交鉴定书”","“竣工验收鉴定书&rdquo"]
In your production database， you have observed that the database server performance degrades whenever there is a switch between the log groups. On further investigation， you find that the database is running in ARCHIVELOG mode and the archived log files are being written to the same disk that is used to store the redo log members. Which two actions would you take to improve the performance of the database server？ （） ["increase the size of the redo log buffer","increase the number of redo log groups","increase the number of log writer processes","increase the number of ARCn processes","change the appropriate LOG_ARCHIVE_DEST_n parameter to place the archived log files in a separate locatio"]
铺植草坪
