在oracle数据库中,db file sequential read等待P2参数的含义是?()A、访问的文件名B、访问的文件号C、文件拥有者D、访问的数据块号

在oracle数据库中,db file sequential read等待P2参数的含义是?()

  • A、访问的文件名
  • B、访问的文件号
  • C、文件拥有者
  • D、访问的数据块号

相关考题:

数据块是Oracle数据库读/写数据的最小存储单元,它的大小由初始化参数db_block_size决定,在Oracle数据库创建时就决定了db_block_size的值。 A.错误B.正确

Viewthisparametersettinginyourdatabase:DB_CREATE_FILE_DEST=’D:\oracle\product\10.2.0\oradata\oracle’Youcreatedatablespacebyusingthiscommand:CREATETABLESPACEUSERS;WhichtwostatementsaretrueabouttheUSERStablespace?()A.Thetablespacehastwodatafiles.B.Anerrorisreportedandtablespacecreationfails.C.Datafilesarecreatedwithnamesgeneratedbytheinstance.D.Thetablespacecanbeextendedwithoutspecifyingthedatafile.E.DatafilesbelongingtotheUSERStablespacecannotberenamed.

ThedatabaseisrunninginARCHIVELOGmode.Examinetheinitializationparametersandtheirvaluessettoenablearchivingonyourdatabaseserver:LOG_ARCHIVE_FORMAT=arch_%t_%s_%r.arcLOG_ARCHIVE_DEST_1=’LOCATION=/disk1/archive’DB_RECOVERY_FILE_DEST=’/u01/oradata’DB_RECOVERY_FILE_DEST_SIZE=20GWhichstatementistrueregardingthearchivedredologfiles()A.Itwillbecreatedonthelocalfilesystem.B.ItwillbecreatedonlyintheFlashRecoveryArea.C.ItwillbecreatedinthelocationspecifiedbytheLOG_ARCHIVE_DEST_1parameterandthedefaultlocation$ORACLE_HOME/dbs.D.ItwillbecreatedinthelocationspecifiedbytheLOG_ARCHIVE_DEST_1parameterandlocationspecifiedbytheDB_RECOVERY_FILE_DESTparameter.

You notice a high number of waits for the db file scattered read and db file sequential read events in the recent Automatic Database Diagnostic Monitor (ADDM) report. After further investigation, you find that queries are performing too many full table scans and indexes are not being used even though the filter columns are indexed.Identify three possible reasons for this.()A. Missing or stale histogram statisticsB. Undersized shared poolC. High clustering factor for the indexesD. High value for the DB_FILE_MULTIBLOCK_READ_COUNT parameterE. Oversized buffer cache

oracle版112的后台数据库名为db112,oracle数据库的实例名为WG73,oracle客户端的配置文件中的连接名为ora-112,在112cfg.ini中[ora112]下有“ServerName=”一项,其配置应为:() A.Db112B.@db112C.WG73D.@WG73E.Ora-112F.@ora-112

Oracle数据中,下列哪些等待事件将产生大量的IO?() A.log file parallel writeB.latch:cache buffers chainsC.db file sequential readD.db file scattered read

在oracle数据库中,db file sequential read等待P2参数的含义是?() A.访问的文件名B.访问的文件号C.文件拥有者D.访问的数据块号

下列数据库平台中,支持非关系型数据库的是()。A:DB2B:DB40C:SybaseD:Oracle

在Hibernate中,如果数据库是Oracle或者DB2,则generator属性值不可以使用()A、hiloB、nativeC、sequenceD、indentity

数据块是Oracle数据库读/写数据的最小存储单元,它的大小由初始化参数db_block_size决定,在Oracle数据库创建时就决定了db_block_size的值。

在ORACLE10G中,()参数的调整需要重启数据库才能生效。A、SGA_MAX_SIZEB、SGA_TARGETC、SHARED_POOL_SIZED、DB_CAHCHE_SIZE

在下列数据库管理系统中,没有提供数据安全保障的数据库是()A、FOXPROB、DB2C、SQL-SERVERD、ORACLE

在ORACLE数据库中对表中一些数据进行删除用()命令。A、DelB、rmC、DeleteD、rm –r

db file sequential read等待P3参数的含义是?()A、访问的数据块号B、访问的文件号C、访问的数据块数量D、访问的文件名

db file sequential read等待P1参数的含义是?()A、访问的文件名B、访问的文件号C、访问的数据块号D、文件拥有者

Oracle数据中,下列哪些等待事件将产生大量的IO?()A、log file parallel writeB、latch:cache buffers chainsC、db file sequential readD、db file scattered read

You decide to enable Flashback Database in your Oracle 10g database so that future recoveries will take less time than traditional recoveries. Which of the following parameters must be included in your initialization parameter file before enabling Flashback Database?()A、 DB_RECOVERY_FILE_DEST onlyB、 DB_FLASHBACK_RETENTION_TARGET onlyC、 DB_RECOVERY_FILE_DEST_SIZE and DB_RECOVERY_FILE_DEST onlyD、 DB_RECOVERY_FILE_DEST and DB_FLASHBACK_RETENTION_TARGET onlyE、 DB_RECOVERY_FILE_DEST_SIZE, DB_RECOVERY_FILE_DEST andF、 DB_FLASHBACK_RETENTION_TARGET

You issue the following command in Oracle: CREATE TABLESPACE DAT_TBS DATAFILE "dat_tbs.dbf" SIZE 2M;. Later queries against the database reveal that the tablespace is located in the /u01/oradata/oracle directory. Which of the following choices identifies how Oracle likely determined what directory to place dat_tbs.dbf file in?()A、DB_CREATE_FILE_DEST B、DB_CREATE_ONLINE_LOG_1 C、DB_CREATE_ONLINE_LOG_2D、The directory is an operating system-specific default value in Oracle that can neigher be specified manually nor changed

单选题db file sequential read等待P1参数的含义是?()A访问的文件名B访问的文件号C访问的数据块号D文件拥有者

单选题You are working as a DBA on Oracle Database 9i. You plan to upgrade your 9i database to Oracle 10g. To be familiar with the new database technology, you decide to install Oracle Database 10g on your workstation at home. You create a general purpose database.   After the installation, you make the following changes in your initialization parameter file:LOG_ARCHIVE_DEST_1=’LOCATION=USE_DB_RECOVERY_FILE_DEST’   DB_RECOVERY_FILE_DEST =    ’LOCATION=d:/product/10.1.0/flash_recovery_area’  DB_RECOVERY_FILE_DEST_SIZE=10g   Where are the archived redo logs stored for your database?()A The archived redo logs are stored in an operating system-dependent location.B The archived redo logs are stored in the location specified by LOG_ARCHIVE_DEST_1.C The archived redo logs are stored in the location specified by DB_RECOVERY_FILE_DEST.D The archived redo logs are stored in the locations specified by both LOG_ARCHIVE_DEST_1 and  DB_RECOVERY_FILE_DEST.

单选题You decide to enable Flashback Database in your Oracle 10g database so that future recoveries will take less time than traditional recoveries. Which of the following parameters must be included in your initialization parameter file before enabling Flashback Database?()A DB_RECOVERY_FILE_DEST onlyB DB_FLASHBACK_RETENTION_TARGET onlyC DB_RECOVERY_FILE_DEST_SIZE and DB_RECOVERY_FILE_DEST onlyD DB_RECOVERY_FILE_DEST and DB_FLASHBACK_RETENTION_TARGET onlyE DB_RECOVERY_FILE_DEST_SIZE, DB_RECOVERY_FILE_DEST andF DB_FLASHBACK_RETENTION_TARGET

判断题数据块是Oracle数据库读/写数据的最小存储单元,它的大小由初始化参数db_block_size决定,在Oracle数据库创建时就决定了db_block_size的值。A对B错

单选题You are managing an Oracle Database 10g database that uses Oracle Managed Files (OMF). You enabled the block change tracking feature for the database. Which statement regarding the change tracking file is true?()A One block change tracking file is created for each data file. By default, the file is created in DB_CREATE_FILE_DEST.B One block change tracking file is created for each data file. By default, the file is created in BACKGROUND_DUMP_DEST.C One block change tracking file is created for the database. By default, the file is created in DB_CREATE_FILE_DEST.D One block change tracking file is created for the database. By default, the file is created in BACKGROUND_DUMP_DEST.

单选题oracle版112的后台数据库名为db112,oracle数据库的实例名为WG73,oracle客户端的配置文件中的连接名为ora-112,在112cfg.ini中[ora112]下有“ServerName=”一项,其配置应为:()ADb112B@db112CWG73D@WG73EOra-112F@ora-112

多选题You notice a high number of waits for the db file scattered read and db file sequential read events in the recent Automatic Database Diagnostic Monitor (ADDM) report. After further investigation, you find that queries are performing too many full table scans and indexes are not being used even though the filter columns are indexed. Identify three possible reasons for this.()AMissing or stale histogram statisticsBUndersized shared poolCHigh clustering factor for the indexesDHigh value for the DB_FILE_MULTIBLOCK_READ_COUNT parameterEOversized buffer cache

多选题Oracle数据中,下列哪些等待事件将产生大量的IO?()Alog file parallel writeBlatch:cache buffers chainsCdb file sequential readDdb file scattered read

单选题在oracle数据库中,db file sequential read等待P2参数的含义是?()A访问的文件名B访问的文件号C文件拥有者D访问的数据块号