知识大全 Oracle DBA创建数据库试题精选

Posted 2022-07-15 数据库

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　　Q : This symbol When you put infront of a line in the parameter file signifies a ment 　　　　 $ 　　 @ 　　 # 　　 ! 　　　　　　　　　　　　Q : When you change a parameter value in the parameter file when will that change takes affect? 　　　　 Immediately after saving the parameter file 　　 At the first CHECKPOINT after saving the paramter file 　　 When the DBWR finishes writing all the dirty buffers to the disk 　　 At the next instance startup 　　　　　　　　　　　　Q : ALTER SYSTEM DEFFERED mand modifies the global parameters for 　　　　 existing sessions after a certain amount of time 　　 new sessions only 　　 existing and new sessions 　　 depends on the SPIN_COUNT initialization parameter 　　　　　　　　　　Q : The location where debugging trace files for back ground processes are written is specified by 　　　　 LOGFILE_DEST 　　 ORACLE_HOME 　　 BACKGROUND_DUMP_DEST 　　 CORE_DUMP_DEST 　　　　　　　　　　　　Q : In case of heavy contention for latches set the LOG_SIMULTANEOUS_COPIES initialization parameter to 　　　　 Twice the number of CPUs 　　 Same as the DB Block Buffers 　　 Same as the Shared Pool Size 　　 None of the above 　　　　　　　　　　　　Q : What is the first step in manually creating a new database 　　　　 Startup an instance 　　 Start SQL*Plus and connect to Oracle as SYSDBA 　　 Check the instance identifier for your system 　　 Create a parameter file 　　　　　　　　　　Q : Which of the following is true regarding control files 　　　　 Oracle remeds atleast o control files stored on o separate disks 　　 Oracle remeds atleast o control files stored on one disk 　　 Oracle remeds to store one control file 　　 One control file is not enough to run a database 　　　　Q : Tom created a database with a DB_BLOCK_SIZE of k he wants to increase this to k what is his next step 　　　　 Issue ALTER SYSTEM SET DB_BLOCK_SIZE= k mand 　　 recreate the database with the new setting 　　 It can be done in both the ways 　　 the DB_BLOCK_SIZE cannot be k 　　　　　　　　　　　　Q : Howmany rollback segments are required for Oracle to startup apart from SYSTEM rollback segment 　　　　 Oracle can start with just the system rollback segment 　　 Oracle Needs atleast rollback segments before it can start 　　 Oracle Needs a Temp Rollback Segment before it can start 　　 None of the above 　　　　　　　　　　　　Q : The unit of measurement for DB_BLOCK_SIZE intialization parameter is 　　　　 BLOCKS 　　 BYTE 　　 PAGE 　　 ROW 　　　　　　　　　　Q : This tablespace is a must before you run the database instance 　　　　 ROLLBACK 　　 TOOLS 　　 TEMP 　　 SYSTEM 　　　　　　　　　　　　Q : Which initialization parameter determines the rollback segments that can be used by Oracle 　　　　 ROLLBACKS 　　 LOGFILE GROUP 　　 ROLLBACK_SEGMENTS 　　 DBA_ROLLBACK_SEGS 　　　　　　　　　　　　Q : Which of the following is a valid but undocumented parameter in Oracle 　　　　 _CORRUPT_RBS 　　 _CORRUPT_REDO 　　 _CORRUPT_ROLLBACK_SEGMENTS 　　 None of the above 　　 cha138/Article/program/Oracle/201311/17773