Which command will remove the ‘stale’ status from a logical volume?()
A、syncvg -p
B、syncvg -l
C、synclv -p
D、synclv -l
机房空调中压力最低的地方在()。
A、冷凝器的入口
B、冷凝器的出口
C、压缩机的排气口
D、压缩机的吸气口
驻波比越大越好。
A、对
B、错
患儿,5个月。因发热、咳嗽两天、气喘1天入院。体检:T:39.5℃,P:150次/分,R:50次/分,烦躁不安,面色灰白,两肺有湿啰音。诊断:支气管肺炎。该患儿的喂养,不妥的是()
A、少量多次喂养
B、喂养中可间断休息
C、给予高营养的软食
D、必要时边吸氧边喂养
E、喂奶后右侧半卧位
为“学生”表的“年龄”字段增加有效性规则“年龄必须在18-45岁之间”的SQL语句是( )。
A、ALTER TABLE学生ALTER年龄SET CHECK年龄<=45 AND年龄>=18
B、ALTER TABLE学生ALTER年龄ADD年龄<=45 AND年龄>=18
C、ALTER TABLE学生ALTER年龄WHERE年龄<=45 AND年龄>=18
D、ALTER TABLE学生ALTER年龄MODI年龄<=45 AND年龄>=18
Which options would you consider while configuring a flash recovery area fast recovery area in 11g Release 2 for your production database that is running in ARCHIVELOG mode?()
ASetting the FAST_START_MTTR_TARGET to set the mean time to recover
BSetting the RECOVERY_PARALLELISM parameter to twice the number of CPUs
CUsing the DB_RECOVERY_FILE_DEST parameter to set the location for flash recovery area
DUsing the DB_RECOVERY_FILE_DEST_SIZE parameter to define the disk space limit for the recovery files created in the flash recovery area