Companycom would like the ability to shrink filesystems. They currently have JFS filesystems. Which of the following is necessary to shrink the filesystems?（） Copy the existing filesystems to JFS2。 Defragment the filesystem， then reduce its size。 Change the file system attribute allow_shrink=yes on the existing filesystems。 Modify the logical volume attribute allow_shrink=yes on the existing logical volume。
包括水平角测量和竖直角测量，水平角用于确定地面点的平面位置，竖直角用于确定地面点的高程。另外，也可用于低精度测量中的视距测量的仪器是（）。 水准仪。 经纬仪。 电磁波测距仪。 全站仪。
You have lost all your online redo logs. As a result， your database has crashed. You have tried to restart the database and clear the online redo log files， but when you try to open the database you get the following error. SQL> startup ORACLE instance started. Total System Global Area 167395328 bytes Fixed Size 1298612 bytes Variable Size 142610252 bytes Database Buffers 20971520 bytes Redo Buffers 2514944 bytes Database mounted. ORA-00313： open failed for members of log group 2 of thread 1 ORA-00312： online log 2 thread 1： ，，/oracle01/oradata/orcl/redo02a.log ORA-27037： unable to obtain file status Linux Error： 2： No such file or directory Additional information： 3 ORA-00312： online log 2 thread 1： ，，/oracle01/oradata/orcl/redo02.log ORA-27037： unable to obtain file status Linux Error： 2： No such file or directory Additional information： 3 SQL> alter database clear logfile group 2； alter database clear logfile group 2 * ERROR at line 1： ORA-01624： log 2 needed for crash recovery of instance orcl （thread 1） ORA-00312： online log 2 thread 1： ，，/oracle01/oradata/orcl/redo02.log ORA-00312： online log 2 thread 1： ，，/oracle01/oradata/orcl/redo02a.log What steps must you take to resolve the error？（） a. Issue the recover database redo logs command. b. Issue the Startup Mount command to mount the database. c. Restore the last full database backup. d. Perform a point-in-time recovery， applying all archived redo logs that are available. e. Restore all archived redo logs generated during and after the last full database backup. f. Open the database using the alter database open resetlogs command. g. Issue the alter database open command. b， a， f。 e， b， a， f。 e， b， a， g。 b， a， g。 c， e， b， d， f。
Click the Exhibit button. Given: ClassA a = new ClassA(); a.methodA(); What is the result? （） Compilation fails.。 ClassC is displayed.。 The code runs with no output.。 An exception is thrown at runtime.。
料场规划应对主要料场和备用料场分别加以考虑，其中不属于主要料场的规划要求是（）。 质好。 有利于常年开采。 运距近。 通常在淹没区外。
During a NIM install，the system stops with the LED code 611.What is the cause of the issue？（）
