多项选择题
Which statements are true regarding table compression？（）
A. It saves disk space and reduces memory usage.
B. It saves disk space but has no effect on memory usage.
C. It incurs extra CPU overhead during DML as well as direct loading operations.
D. It incurs extra CPU overhead during DML but not direct loading operations.
E. It requires uncompress operation during I/O.
相关考题
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多项选择题
You are managing an Oracle Database 11g ASM instance having three disks in a disk group with ASM compatibility attribute set to 11.1.0 and redundancy set to high. One of the disks in the disk group becomes unavailable because of power failure. Which statements will be true in this scenario？（）
A. The disk is immediately dropped from the disk group.
B. The ASM tracks the extents that are modified during the outa
C. The ASM migrates the extents from the unavailable disk to the remaining disks.
D. The disk automatically goes offline. -
单项选择题
Examine the following values of the initialization parameters in the database having the SID ORCL： BACKGROUND_DUMP_DEST=/u01/app/oracle/product/11.1.0/db_1/bdump USER_DUMP_DEST=/u01/app/oracle/product/11.1.0/db_1/udump CORE_DUMP_DEST=/u01/app/oracle/product/11.1.0/db_1/cdump DIAGNOSTIC_DEST= The environment variables have the following value： ORACLE_BASE=/u01/app/oracle ORACLE_HOME=/u01/app/oracle/product/11.1.0/db_1 What is the location of the Automatic Diagnostic Repository （ADR） home？（）
A. /u01/app/oracle/product/11.1.0/db_1
B. /u01/app/oracle
C. $ORACLE_HOME/bdump
D. $ORACLE_HOME/log -
多项选择题
IdentifytwosituationsinwhichyoucanuseDataRecoveryAdvisorforrecovery.（）
A. The user has dropped an important table that needs to be recovered.
B. The database files are corrupted when the database is open.
C. You are not able to start up the database instance because the required database files are missing.
D. The archived log files are missing for which backup is not available.
