更多"On your Oracle 12c database, you in"的相关试题:
[多项选择] On your Oracle 12c database, you Issue the following commands to create indexes SQL > CREATE INDEX oe.ord_customer_ix1 ON oe.orders (customers_id, sales_rep_id) INVISIBLE; SQL> CREATE BITMAP INDEX oe.ord_customer_ix2 ON oe.orders (customers_id, sales_rep_id); Which two statement are correct?（）
A. Both the indexes are created; however, only the ORD_COSTOMER index is visible.
B. The optimizer evaluates index access from both the Indexes before deciding on which index to use for query execution plan.
C. Only the ORD_CUSTOMER_IX1 index is created.
D. Only the ORD_CUSTOMER_IX2 index is created.
E. Both the indexes are updated when a new row is inserted, updated, or deleted In the orders table.
[单项选择] You find this query being used in your Oracle 12c database: Which method a used by the optimizer to limit the rows being returned?（）
A. A filter is added to the table query dynamically using ROWNUM to limit the rows to 20 percent of the total rows
B. All the rows are returned to the client or middle tier but only the first 20 percent are returned to the screen or the application.
C. A view is created during execution and a filter on the view limits the rows to 20 percent of the total rows.
D. A TOP-N query is created to limit the rows to 20 percent of the total rows
[多项选择] A warehouse fact table in your Oracle 12c Database is range-partitioned by month and accessed frequently with queries that span multiple partitions The table has a local prefixed, range partitioned index. Some of these queries access very few rows in some partitions and all the rows in other partitions, but these queries still perform a full scan for all accessed partitions. This commonly occurs when the range of dates begins at the end of a month or ends close to the start of a month. You want an execution plan to be generated that uses indexed access when only a few rows are accessed from a segment, while still allowing full scans for segments where many rows are returned. Which three methods could transparently help to achieve this result?（）
A. Using a partial local Index on the warehouse fact table month column with indexing disabled to the table partitions that return most of their rows to the queries.
B. Using a partial local Index on the warehouse fact table month column with indexing disabled for the table partitions that return a few rows to the queries.
C. Using a partitioned view that does a UNION ALL query on the partitions of the warehouse fact table, which retains the existing local partitioned column.
D. Converting the partitioned table to a partitioned view that does a UNION ALL query on the monthly tables, which retains the existing local partitioned column
E. Using a partial global index on the warehouse fact table month column with indexing disabling for the table partitions that return most of their rows to the queries.
F. Using a partial global index on the warehouse fact table month column with indexing disabled for the table partitions that return a few rows to the queries.
[多项选择] You support Oracle Database 12c Oracle Database 11g, and Oracle Database log on the same server. All databases of all versions use Automatic Storage Management (ASM). Which three statements are true about the ASM disk group compatibility attributes that are set for a disk group?（）
A. The ASM compatibility attribute controls the format of the disk group metadata.
B. RDBMS compatibility together with the database version determines whether a database Instance can mount the ASM disk group.
C. The RDBMS compatibility setting allows only databases set to the same version as the compatibility value, to mount the ASM disk group.
D. The ASM compatibility attribute determines some of the ASM features that may be used by the Oracle disk group.
E. The ADVM compatibility attribute determines the ACFS features that may be used by the Oracle 10g database.
[多项选择] On your Oracle Database, you issue the following commands to create indexes: SQL > CREATE INDEX oe.ord_customer_ix1 ON oe.orders (customer_id, sales_rep_id) INVISIBLE; SQL> CREATE BITMAP INDEX oe.ord_customer_ix2 ON oe.orders (customer_id, sales_rep_id); Which two statements are true?（）
A. Only the ORD_CUSTOMER_IX1 index created.
B. Both the indexes are updated when a row is inserted, updated, or deleted in the ORDERS table.
C. Both the indexes are created: however, only ORD_CUSTOMERS_IX1 is used by the optimizer for queries on the ORDERS table.
D. The ORD_CUSTOMER_IX1 index is not used by the optimizer even when the OPTIMIZER_USE_INVISIBLE_INDEXES parameters is set to true.
E. Both the indexes are created and used by the optimizer for queries on the ORDERS table.
F. Both the indexes are created: however, only ORD_CUSTOMERS_IX2 is used by the optimizer for queries on the ORDERS table.
[多项选择]You upgrade your Oracle database in a multiprocessor environment. As a recommended you execute thefollowing script:SQL > @utlrp.sqlWhich two actions does the script perform?（）
A. Parallel compilation of only the stored PL/SQL code
B. Sequential recompilation of only the stored PL/SQL code
C. Parallel recompilation of any stored PL/SQL code
D. Sequential recompilation of any stored PL/SQL code
E. Parallel recompilation of Java code
F. Sequential recompilation of Java code
[单项选择]In the Oracle system, sets of SQL statements and control flow statements that have been named, compiled, and stored in the database are referred to as stored( )。
A. PL/SQL
B. procedures
C. triggers
D. transactions
[单项选择]In the ORACLE system, sets of SQL statements and control flow statements that have been named, compiled ,and stored in database are referred to as stored
A. batches
B. procedures
C. triggers
D. transactions
[多项选择] You upgraded your database from pre-12c to a multitenant container database (CDB) containing pluggable databases (PDBs). Examine the query and its output: Which two tasks must you perform to add users with SYSBACKUP, SYSDG, and SYSKM privilege to the password file?（）
A. Assign the appropriate operating system groups to SYSBACKUP, SYSDG, SYSKM.
B. Grant SYSBACKUP, SYSDG, and SYSKM privileges to the intended users.
C. Re-create the password file with SYSBACKUP, SYSDG, and SYSKM privilege and the FORCE argument set to No.
D. Re-create the password file with SYSBACKUP, SYSDG, and SYSKM privilege, and FORCE arguments set to Yes.
E. Re-create the password file in the Oracle Database 12c format.
[单项选择] After implementing full Oracle Data Redaction, you change the default value for the NUMBER data type as follows: After changing the value, you notice that FULL redaction continues to redact numeric data with zero. What must you do to activate the new default value for numeric full redaction?（）
A. Re-enable redaction policies that use FULL data redaction.
B. Re-create redaction policies that use FULL data redaction.
C. Re-connect the sessions that access objects with redaction policies defined on them.
D. Flush the shared pool.
E. Restart the database instance
[单项选择]Oracle系统采用SQL语言作为它的数据库语言。Oracle数据库的数据类型中包括支持多种媒体信息的数据类型，它们的最大长度可达到多少字节 ( )
A. 640K
B. 10M
C. 100M
D. 2G
[单项选择]作为一个ORACLE DBA，你运行以下的SQL命令查询ASM实例，查询结果的含义是什么？（）SQL>select group_number，name，state fromv$ASM_DISKGROUP；GROUP_NUMBER NAME STATE 0 DGROUP1 DISMOUNTED 2 DGROUP2 MOUNTED 3 DGROUP3 MOUNTED
A. DGROUP1磁盘组被其他的DBA卸载了
B. 一个多余的磁盘（DGROUP1）将在磁盘组中丢失
C. 一个数据文件丢失，原因是DGROUP1磁盘组正在进入DISMOUNTED状态
D. 这个查询在ASM实例中没有意义
[单项选择] You have recovered your Oracle Database 10g by using the control file backup because all copies of the current control file have been lost due to a media failure. You open your database by using the following statement： SQL>ALTER DATABASE OPEN RESETLOGS； Which of the following options is true about using the RESETLOGS option？（）
A. The log sequence is reset to 0.
B. All the online redo logs are deleted.
C. All the archived redo logs from a previous incarnation become useless.
D. The full database backup taken from a previous incarnation can be used in future.
E. Only the control file and online redo log files are updated with a new RESETLOGS SCN and time stamp.
[单项选择]If you （）your children well, you will be proud of them.
A. catch up
B. bring up
C. feed up
D. grow up
[单项选择]
When you have completed your college education,you will look for a job suited to your training,interests,and ambitions(志向).In most cases,you will visit a likely employer’s office and complete an application form for the position in which you are interested.The employer may then make a decision regarding your ability on the basis of the application form and a personal interview. Throughout your lifetime,however,you may find yourself in other job-seeking situations in an attempt to improve your position.As you gain experience,you are likely to become ambitious for better and better jobs.These better jobs often request written letters of application and summaries of your background and experience.Your writing skills may play an important part in obtaining the job you desire. In any job-seeking situation,there are a number of ways you may use your writing skills:to complete an application form,prepare a resume,write an application letter,or write employment follow-up letters.As
A. will follow their interests and ambition
B. like to visit every employer's office
C. can make an arrangement for an interview
D. will surely get a chance to improve position
