单项选择题
You are using an Automatic Storage Management （ASM） instance to manage the files of your production database. You have two disk groups， DG1and DG2with one device each. In the parameter file of the production database， the following parameters have been specified：
DB_CREATE_ONLINE_LOG_DEST_1 = ’+dg1’
DB_CREATE_ONLINE_LOG_DEST_2 = ’+dg2’
What would be the impact of this setting？（）
A. When a new log group is added， it would have one member in each disk group.
B. When a new log group is added， it would have two members in each disk group.
C. When a new tablespace is added， it would have one data file in each disk group.
D. When a new log file is added， it would have one member spread across the disk groups.
相关考题
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单项选择题
YoulostthePRODSTDtablespace，whichwasread/write.Thetablespacewasread-onlywhenthelastbackupwasperformed.Howwouldyourecoverthetablespace？（）
A. restore the tablespace from the backup； there is no need to apply the redo information
B. restore the full database to recover the data up to the point when you performed the backup
C. restore the tablespace from the backup and then perform a recovery using the backup control file
D. restore the tablespace from the backup and then recover the tablespace； all the redo information from the point when the tablespace was made read/write is applied -
单项选择题
Thecurrenttimeis12：00noon.YouwanttorecovertheUSERStablespacefromafailurethatoccurredat11：50a.m.Youdiscoverthattheonlymemberofanunarchivedredologgroupcontaininginformationfrom11：40a.m.onwardsiscorrupt.Withreferencetothisscenario，ifyouarenotusingRecoveryManager（RMAN），whichrecoverymethodwouldyouuse？（）
A. time-based recovery
B. log sequence recovery
C. cancel-based recovery
D. change-based recovery -
多项选择题
ImmediatelyafteraddinganewdisktoorremovinganexistingdiskfromanAutomaticStorageManagement（ASM）instance，youfindthattheperformanceofthedatabasedecreasesinitially，untiltheadditionorremovalprocessiscompleted.Performancethengraduallyreturnstonormallevels.Whichtwoactivitiescouldyouperformtomaintainaconsistentperformanceofthedatabasewhileaddingorremovingdisks？（）
A. increase the number of checkpoint processes
B. define the POWER option while adding or removing the disks
C. increase the number of DBWR processes by setting up a higher value for DB_WRITER_PROCESSES
D. increase the number of slave database writer processes by setting up a higher value for DBWR_IO_SLAVES
E. increase the number of ASM Rebalance processes by setting up a higher value for ASM_POWER_LIMIT during the disk addition or removal
