单选题The DB_BLOCK_CHECKING initialization parameter is set to OFF. Which block checking would be performed？（）A The Oracle database will perform block checking for the index blocks onlyB The Oracle database will not perform block checking for any of the data blocksC The Oracle database will perform block checking for the default permanent tablespace onlyD The Oracle database will perform block checking for the data blocks in all user tablespacesE The Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only
单选题
The DB_BLOCK_CHECKING initialization parameter is set to OFF. Which block checking would be performed？（）
A
The Oracle database will perform block checking for the index blocks only
B
The Oracle database will not perform block checking for any of the data blocks
C
The Oracle database will perform block checking for the default permanent tablespace only
D
The Oracle database will perform block checking for the data blocks in all user tablespaces
E
The Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only
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单选题The DB_BLOCK_CHECKINGinitialization parameter is set to TRUE. What would be the result of this setting on the data blocks being written to the datafiles， every time the DBWn writes？（）A The Oracle database will check all data blocks by going through the data on each block， making sure the data is self-consistent.B The DBWn and the direct loader will calculate a checksum and store it in the cache header of every data block when writing it to disk.C The Oracle database will check data blocks belonging to the SYSTEM tablespace only， by going through the data on each block， making sure the data is self-consistent.D The Oracle database will check data blocks belonging to the SYSAUX tablespace only， by going through the data on each block， making sure the data is self-consistent.E The Oracle database will check data blocks in the SYSTEM and SYSAUX tablespaces only， by going through the data on each block， making sure the data is self-consistent.
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单选题You have the following requirements in relation to the detection of block corruption for your database instance： Check for logical self-consistency of data blocks when modified in memory. Checksums are calculated before and after the block change. Checks are performed for the lost writes to the physical standby database. Which method would help you perform the above checks automatically？（）A Set the DB_SECUREFILE parameter to PERMITTEDB Set the DB_ULTRA_SAFE parameter to DATA_ONLYC Set the DB_LOCK_CHECKSUM parameter to TYPICALD Set the DB_LOST_WRITE_PROTECT parameter to TYPICAL
单选题The DB_BLOCK_CHECKING initialization parameter is set to OFF. 数据库块检测初始化参数被设定为关 Which block checking would be performed?（）AThe Oracle database will perform block checking for the index blocks only BThe Oracle database will not perform block checking for any of the data blocks CThe Oracle database will perform block checking for the default permanent tablespace only DThe Oracle database will perform block checking for the data blocks in all user tablespaces EThe Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only Oracle
单选题You issued the following command to analyze the SCOTT.EMP table for block corruption： ANALYZE TABLE SCOTT.EMP VALIDATE STRUCTURE； You received the following error： ORA-01578： ORACLE data block corrupted （file # %s， block # %s） How will you resolve the block corruption problem？（）A by using the DBMS_REPAIR packageB by using the DB_BLOCK_CHECKING parameterC by using the DBVERIFY utilityD will not be completely resolved until the hardware fault is corrected
单选题The DB_BLOCK_CHECKING initialization parameter is set to FALSE. What level of block checking would be performed？（）A The Oracle database will not perform block checking for any of the data blocks.B The Oracle database will perform block checking for the default permanent tablespace only. C The Oracle database will perform block checking for the data blocks in all user tablespaces.D The Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only.E The Oracle database will perform block checking for the data blocks in the SYSTEM and SYSAUX tablespaces.
单选题You want to check all the data blocks being written to the datafiles by analyzing the data on each block every time the DBWn process writes. Which action will you perform to check the data blocks？（）A Set the value of the DB_BLOCK_CHECKING initialization parameter to TRUEB Use the ANALYZE utility.C Use the DBVERIFY utility.D Use the DBMS_REPAIR package.
单选题You have the following requirements in relation to the detection of block corruption for your database instance: 1. Check for logical self-consistency of data blocks when modified in memory. 2. Checksums are calculated before and after the block change. 3. Checks are performed for the lost writes to the physical standby database. Which method would help you perform the above checks automatically? （）ASet the DB_SECUREFILE parameter to PERMITTEDBSet the DB_ULTRA_SAFE parameter to DATA_ONLYCSet the DB_LOCK_CHECKSUM parameter to TYPICALDSet the DB_LOST_WRITE_PROTECT parameter to TYPICAL
单选题The DB_BLOCK_CHECKING initialization parameter is set to OFF. Which block checking would be performed？（）A The Oracle database will perform block checking for the index blocks onlyB The Oracle database will not perform block checking for any of the data blocksC The Oracle database will perform block checking for the default permanent tablespace onlyD The Oracle database will perform block checking for the data blocks in all user tablespacesE The Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only
单选题The DB_BLOCK_CHECKING initialization parameter is set to TRUE. What would be the result of this setting on the data blocks being written to the datafiles， every time the DBWn writes？（）AThe Oracle database will check all data blocks by going through the data on each block， making sure the data is self-consistent.BDBWn and the direct loader will calculate a checksum and store it in the cache header of every data block when writing it to disk.CThe Oracle database will check data blocks belonging to the SYSTEM tablespace only， by going through the data on each block， making sure the data is self-consistent.DThe Oracle database will check data blocks belonging to the SYSAUX tablespace only， by going through the data on each block， making sure the data is self-consistent.EThe Oracle database will check data blocks in the SYSTEM and SYSAUX tablespaces only， by going through the data on each block， making sure the data is self-consistent
单选题The DB_BLOCK_CHECKING initialization parameter is set to OFF.Which block checking would be performed?（）AThe Oracle database will perform block checking for the index blocks onlyBThe Oracle database will not perform block checking for any of the data blocksCThe Oracle database will perform block checking for the default permanent tablespace onlyDThe Oracle database will perform block checking for the data blocks in all user tablespacesEThe Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only