Your database is running in ARCHIVELOG mode. You are performing a user-managed backup of the DATA1 tablespace. You place the DATA1 tablespace in backup mode by issuing the following statement： ALTER TABLESPACE data1 BEGIN BACKUP； While you are performing the backup， an error occurs that causes the instance to terminate abnormally. Which statement about the DATA1 tablespace is true？（） The DATA1 tablespace is automatically taken out of backup mode when the instance aborts.。 If you restart the database，the DATA1 tablespace will be automatically taken out of backup mode when the database is opened.。 If you restart the database，the DATA1 tablespace will be automatically taken out of backup mode when the database is mounted.。 If you restart the database，the database will not be opened.。
废水处理中变异现象有哪几方面？
在验收工作中进一步落实水利工程建设项目法人责任制，强调（）以及其他参建单位应当提交真实、完整的验收资料，并对提交的资料负责。 监理人。 投标人。 项目法人。 以上都不对。
当两电源参数完全相同，且之间线路各点参数完全相同，则振荡中心一定在（）。 靠近一侧电源。 靠近另一侧电源。 线路中点。
You performed the RMAN database backup with the KEEP option.Which two statements are true about this backup?（） (Choose two) The KEEP option overrides the configured retention policy。 The KEEP option is an attribute of an individual backup piece。 The backup contains only data files and archived redo log files。 The backup contains data files, the server parameter file and the control file even if the control file auto backup is disabled。
You are maintaining your database in Oracle10g. You are performing an incomplete recovery because the tablespace， DATA1， was dropped and purged from the Recycle Bin. After performing an incomplete recovery， you open the database with the RESETLOGS option. What will NOT be the impact of using the RESETLOGS option？（）
