网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
You have enabled the Slow Query Log for a short period. When you process the Slow Query Log, you receive the following snip of output: Count: 100 Time=0 .22a (22s) Lock=0.00s (0s) Rows=0.0 (0), root[root] @localhost CREATE TABLE 't1' (id serial,id0 varchar(N) unique key,intcaoll INT (N) ,intco12 INT(N) ,intco13 INT(N) ,intco14 INT(N) ,intco15 INT(N) ,charcol1 VARVHAR(N) ,charcol2 VARCHAR(N) charcol3 VARCHAR (N) ,charcol4 VARVHAR(N) ,charcol5 VARCHAR(N) charcol6 VARCHAR (N) ,charcol7 VARVHAR(N) ,charcol8 VARCHAR(N) charcol9 VARCHAR (N) .charcol 10 VACHAR (N) ) Count: 64000 Time-0.02s (1213s) Lock=0.00s (6s) Rows=1.0 (64000), root [root]@ localhost SELECT intocl1, intco12, intco13, intco14, intco15, intco16,intco17, intco18 ,intcol9, intcol10, charcol1, charcol2, charcol3, charcol4, charcol5, charcol6 ,charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's' Count: 1 Time=0.02s (0s) Lock=0.00s (0s) Rows=1.0 (1) agent [agent] @localhost SELECT Select_priv, Repl_client_priv, Show_db_priv, Super_priv, Process_priv FROM mysql.user WHERE CONCAT (user, 's', host) = CURRENT_USER （ ） Count: 48000 Time=0.02s (778s) Lock=0.00 (3s) Rows=1.0 (48000), root[root]@localhost SELECT intocl1,intcol2,intcol3, intcol4, intcol5, charcol1, charcol2, charcol3 ,charcol4, charcol5, charcol6, charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's' You want to tune the query such that it provides the greatest overall time savings. Which query will accomplish this?（）
- A、CHEATE TABLE 't1' (id serial, id0 varchar (N) unique key, intcol1 INT (N) ,intcol2 INT (N), intcol3 INT(N) ,intcol4 INT(N), intcol5 INT(N), charool1 VARCHAR (N) ,charcol2 VARCHAR (N), charcol3 VARCHAR(N), charcol4 VARCHAR(N), charcol5 VARCHAR (N) ,charcol6 VARCHAR (N), charcol7 VARCHAR(N), charcol8 VARCHAR(N), charcol9 VARCHAR (N) ,charcol10 VARCHAR (N)
- B、SELECT intcol1, intcol2, intcol3, intcol4, intcol5, intcol6, intcol7, intcol8, intcol9, Intcol10, intcol11, intcol12, intcol13, intcol14, intcol15, intcol16, intcol17, intcol18, intcol19, charcol10 FROM t1 WHERE id = 's'
- C、SELECT Select_priv, Repl_client_priv, Show_db_priv, Super_priv, Process_priv FROM mysql.user WHERE CONCAT (user,'s', host) = CURRENT_USER()
- D、SELECT intcol1, intcol2, intcol3, intcol4, intcol5, charcol1, charcol2, charcol3, charcol4, charcol5, charcol6, charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's'
参考答案
更多 “ You have enabled the Slow Query Log for a short period. When you process the Slow Query Log, you receive the following snip of output: Count: 100 Time=0 .22a (22s) Lock=0.00s (0s) Rows=0.0 (0), root[root] @localhost CREATE TABLE 't1' (id serial,id0 varchar(N) unique key,intcaoll INT (N) ,intco12 INT(N) ,intco13 INT(N) ,intco14 INT(N) ,intco15 INT(N) ,charcol1 VARVHAR(N) ,charcol2 VARCHAR(N) charcol3 VARCHAR (N) ,charcol4 VARVHAR(N) ,charcol5 VARCHAR(N) charcol6 VARCHAR (N) ,charcol7 VARVHAR(N) ,charcol8 VARCHAR(N) charcol9 VARCHAR (N) .charcol 10 VACHAR (N) ) Count: 64000 Time-0.02s (1213s) Lock=0.00s (6s) Rows=1.0 (64000), root [root]@ localhost SELECT intocl1, intco12, intco13, intco14, intco15, intco16,intco17, intco18 ,intcol9, intcol10, charcol1, charcol2, charcol3, charcol4, charcol5, charcol6 ,charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's' Count: 1 Time=0.02s (0s) Lock=0.00s (0s) Rows=1.0 (1) agent [agent] @localhost SELECT Select_priv, Repl_client_priv, Show_db_priv, Super_priv, Process_priv FROM mysql.user WHERE CONCAT (user, 's', host) = CURRENT_USER （ ） Count: 48000 Time=0.02s (778s) Lock=0.00 (3s) Rows=1.0 (48000), root[root]@localhost SELECT intocl1,intcol2,intcol3, intcol4, intcol5, charcol1, charcol2, charcol3 ,charcol4, charcol5, charcol6, charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's' You want to tune the query such that it provides the greatest overall time savings. Which query will accomplish this?（）A、CHEATE TABLE 't1' (id serial, id0 varchar (N) unique key, intcol1 INT (N) ,intcol2 INT (N), intcol3 INT(N) ,intcol4 INT(N), intcol5 INT(N), charool1 VARCHAR (N) ,charcol2 VARCHAR (N), charcol3 VARCHAR(N), charcol4 VARCHAR(N), charcol5 VARCHAR (N) ,charcol6 VARCHAR (N), charcol7 VARCHAR(N), charcol8 VARCHAR(N), charcol9 VARCHAR (N) ,charcol10 VARCHAR (N)B、SELECT intcol1, intcol2, intcol3, intcol4, intcol5, intcol6, intcol7, intcol8, intcol9, Intcol10, intcol11, intcol12, intcol13, intcol14, intcol15, intcol16, intcol17, intcol18, intcol19, charcol10 FROM t1 WHERE id = 's'C、SELECT Select_priv, Repl_client_priv, Show_db_priv, Super_priv, Process_priv FROM mysql.user WHERE CONCAT (user,'s', host) = CURRENT_USER()D、SELECT intcol1, intcol2, intcol3, intcol4, intcol5, charcol1, charcol2, charcol3, charcol4, charcol5, charcol6, charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's'” 相关考题
考题
You have an SQL query that takes one minute to execute. You use the following code segment to execute theSQL query asynchronously.Dim ar As IAsyncResult = cmd.BeginExecuteReader()You need to execute a method named DoWork() that takes one second to run while the SQL query is executing.DoWork() must run as many times as possible while the SQL query is executing.Which code segment should you use?（）A.B.C.D.
考题
You have enabled resumable space allocation in your database by setting the RESUMABLE_TIMEOUT parameter set to a nonzero value.Which three statements about resumable space allocation are true? ()
A. Even with resumable space allocation enabled for your database, you can disable resumable space allocation for a single session.B. A resumable statement is suspended only if an out of space error occurs. （Out of space condition Maximum extents reached condition，Space quota exceeded condition）C. When a resumable statement is suspended, the transaction that contains the statement is also suspended.D. A resumable statement can only be suspended and resumed once during the execution of the statement.E. You can query the V$SESSION_WAIT dynamic performance view to identify the statements that are suspended for a session.
考题
Your developers have created table to store some of their program‘s data.After examining the slow Query Log, you see that they are using the LIKE operator and SUBSTER () functions against a VARCHAR (10000) column quite often.An example of the start of one row of data: ‘GREEN01020495888331993-12-10/2…‘What should you do to improve the overall performance?（）A.Convert the column to TEXT and add a fulltext index to the tableB.Create multiple prefix indexes of differing lengthsC.Convert their column to BINARYD.Redesign the table so that the most commonly searched for string patterns are in their own columns
考题
A general purpose MySQL instance is configured with the following options:—log-slow-queries—long-query-time=,0001—log-slow-admin-queries—general-log—log-bin—binlog-format=STATEMENT—innodb-flush-log-at-trx-commit=1Which three statements are true（）。A.The General Query Log records more data than the Binary LogB.The binary Log records more data than the General Query LogC.The Slow Query Log records more data than the General Query LogD.The General Query Log records more data than the Slow Query LogE.The Slow Query Log records more data than the Binary LogF.The Binary Log records more data than the Slow Query Log
考题
Which MySQL utility program should you to process and sort the slow Query log based on query time or average query time?()
A.MysqlaccessB.MysqldumpC.MysqlshowD.MysqlslowE.Mysqldumpslow
考题
The network administrator has just finished installing a new 10/100/1000 switch, but receives reports from the server administrator that servers connected to the new switch seem to be experiencing slow LAN connections. The network administrator checks the port connecting the new switch to the core switch and sees the following information:Which of the following is the MOST likely cause of the slow connections?（）A. The servers have not had VLAN tagging enabled on their NICs.B. Speed and duplex have not been set.C. VLAN tagging was not set on the trunk.D. The servers have been connected with CAT5 cable.
考题
Examine the parameter for your database instance: You generated the execution plan for the following query in the plan table and noticed that the nested loop join was done. After actual execution of the query, you notice that the hash join was done in the execution plan: Identify the reason why the optimizer chose different execution plans.（）A、The optimizer used a dynamic plan for the query.B、The optimizer chose different plans because automatic dynamic sampling was enabled.C、The optimizer used re-optimization cardinality feedback for the query.D、The optimizer chose different plan because extended statistics were created for the columns used.
考题
You are maintaining the SALES database for an organization. You have enabled the Flashback Database feature and want to estimate the flashback space required for future operations. Which view would you query to estimate the flashback space required？（）A、 V$DATABASEB、 V$FLASHBACK_DATABASE_STATC、 V$FLASHBACK_DATABASE_LOGD、 V$RECOVERY_FILE_DEST
考题
You work as a database administrator for Supportcenter.cn. In a production environment， users complain about the slow response time when accessing the database. You have not optimized the memory usage of the Oracle instance and you suspect the problem to be with the memory. To which type of object would you refer to determine the cause of the slow response？（）A、The trace fileB、The fixed viewsC、The data dictionary viewsD、The operating system log fieldsE、The dynamic performance views.
考题
You have applications that have frequently executed queries, and produce small and static result sets.You configure the sqlnet.ora file in the client machine to set a nonzero value for the OCI_RESULT_CACHE_MAX_SIZE parameter. What is the purpose of this configuration?（）A、to avoid round trips to the server by enabling caching of query results in client memoryB、to improve performance by storing a copy of the data from the private SQL area of the PGAC、to enhance the query performance by creating a cache in the client memory for sorting operationsD、to avoid the storing of query plans and results in the server by creating a cache in the client memory
考题
You have enabled resumable space allocation in your database by setting the RESUMABLE_TIMEOUTparameter set to a nonzero value.Which three statements about resumable space allocation are true? （）(Choose three.)A、Even with resumable space allocation enabled for your database, you can disable resumable space allocation for a single session.B、A resumable statement is suspended only if an out of space error occurs.C、When a resumable statement is suspended, the transaction that contains the statement is also suspended.D、A resumable statement can only be suspended and resumed once during the execution of the statement.E、You can query the V$SESSION_WAIT dynamic performance view to identify the statements that are suspended for a session
考题
Which MySQL utility program should you to process and sort the slow Query log based on query time or average query time?（）A、MysqlaccessB、MysqldumpC、MysqlshowD、MysqlslowE、Mysqldumpslow
考题
You have a DNS server named Server1 that runs Windows Server 2003 Service Pack 2 （SP2）. You create a primary zone on Server1 for contoso.com.You run the DNS simple query test and recursive query test. The simple query test completes successfully， but the recursive query test fails.You need to ensure that the recursive query test can complete successfully. What should you do on Server1？（）A、Clear the cache.B、Disable recursion.C、Enable access to the Internet.D、Configure a reverse lookup zone.
考题
You have an Exchange Server 2010 organization.You need to ensure that all users in the organization can view the availability of a company projector.What should you create for the projector？（）A、a distribution groupB、a mailboxC、a mail-enabled contactD、a sharing policy
考题
You are the network administrator for The network consists of a single Active Directory domain named The functional level of the domain is Windows Server 2003. Some user accounts have expiring passwords and some do not. You need to identify all user accounts that do not have expiring passwords. You need to modify the password property to allow the passwords on these accounts to expire. You must complete this task by using the minimum amount of administrative effort. First, you create a saved query to obtain a list of all user accounts that do not have expiring passwords. What should you do next?（）A、Export the query results to a comma-delimited file. Use a CSVDE script to modify the password property of each user account.B、From the Results pane of the query, select all user accounts and modify their password properties simultaneously.C、Export the query results to a comma-delimited file. Use an LDIFDE script to modify the password property of each user account.D、From the Results pane of the query, select each user account and modify the password property, one by one.
考题
单选题Your developers have created table to store some of their program's data. After examining the slow Query Log, you see that they are using the LIKE operator and SUBSTER （ ） functions against a VARCHAR (10000) column quite often. An example of the start of one row of data: 'GREEN01020495888331993-12-10/2…' What should you do to improve the overall performance?（）A
Convert the column to TEXT and add a fulltext index to the tableB
Create multiple prefix indexes of differing lengthsC
Convert their column to BINARYD
Redesign the table so that the most commonly searched for string patterns are in their own columns
考题
多选题You have enabled resumable space allocation in your database by setting the RESUMABLE_TIMEOUTparameter set to a nonzero value.Which three statements about resumable space allocation are true? （）(Choose three.)AEven with resumable space allocation enabled for your database, you can disable resumable space allocation for a single session.BA resumable statement is suspended only if an out of space error occurs.CWhen a resumable statement is suspended, the transaction that contains the statement is also suspended.DA resumable statement can only be suspended and resumed once during the execution of the statement.EYou can query the V$SESSION_WAIT dynamic performance view to identify the statements that are suspended for a session
考题
多选题A general purpose MySQL instance is configured with the following options: —log-slow-queries —long-query-time=,0001 —log-slow-admin-queries —general-log —log-bin —binlog-format=STATEMENT —innodb-flush-log-at-trx-commit=1 Which three statements are true（）。AThe General Query Log records more data than the Binary LogBThe binary Log records more data than the General Query LogCThe Slow Query Log records more data than the General Query LogDThe General Query Log records more data than the Slow Query LogEThe Slow Query Log records more data than the Binary LogFThe Binary Log records more data than the Slow Query Log
考题
单选题You are maintaining the SALES database for an organization. You have enabled the Flashback Database feature and want to estimate the flashback space required for future operations. Which view would you query to estimate the flashback space required？（）A
V$DATABASEB
V$FLASHBACK_DATABASE_STATC
V$FLASHBACK_DATABASE_LOGD
V$RECOVERY_FILE_DEST
考题
单选题Examine the parameter for your database instance: You generated the execution plan for the following query in the plan table and noticed that the nested loop join was done. After actual execution of the query, you notice that the hash join was done in the execution plan: Identify the reason why the optimizer chose different execution plans.（）A
The optimizer used a dynamic plan for the query.B
The optimizer chose different plans because automatic dynamic sampling was enabled.C
The optimizer used re-optimization cardinality feedback for the query.D
The optimizer chose different plan because extended statistics were created for the columns used.
考题
单选题Which MySQL utility program should you to process and sort the slow Query log based on query time or average query time?（）A
MysqlaccessB
MysqldumpC
MysqlshowD
MysqlslowE
Mysqldumpslow
考题
单选题You are the network administrator for your company. The network consists of a single Active Directorydomain. The functional level of the domain is Windows Server 2003.Some user accounts have expiring passwords and some do not. You need to identify all user accounts that do not have expiring passwords. You need to modify the passwordproperty to allow the passwords on these accounts to expire. You must complete this task by using the minimum amount of administrative effort.First, you create a saved query to obtain a list of all user accounts that do not have expiring passwords.What should you do next? （）A
Export the query results to a comma-delimited file. Use a CSVDE script to modify the password property of each user account.B
From the Results pane of the query, select all user accounts and modify their password properties simultaneously.C
Export the query results to a comma-delimited file. Use an LDIFDE script to modify the password property of each user account.D
From the Results pane of the query, select each user account and modify the password property, one by one.
考题
单选题You are creating an online catalog application that will display product information on the company Web site. The product data is stored in a SQL Server 2005 database. The data is stored as relational data but must be passed to the application as an XML document by using FOR XML. You test your application and notice that not all of the items matching your query appear in the XML document. Only those products that have values for all elements in the schema appear. You need to modify your Transact-SQL statement so that all products matching your query appear in the XML document. What should you do？（）A
Add an XML index to the table that contains the product data.B
Add the XSINIL argument to the ELEMENTS directive in the query.C
Add a HAVING clause to the query.D
Add the replace value of clause to the query.
考题
单选题You want a record of all queries that are not using indexes. How would you achieve this?（）A
By enabling the Slow Query Log because all queries that are not using indexes will be logged automaticallyB
By enabling the Error Log because not using indexes is an errorC
By enabling the Slow Query Log and using the – log-queries-not-using-indexes optionD
By enabling the Error Log and using the – log-queries-not-using-indexes option
考题
单选题You work as a database administrator for Supportcenter.cn. In a production environment， users complain about the slow response time when accessing the database. You have not optimized the memory usage of the Oracle instance and you suspect the problem to be with the memory. To which type of object would you refer to determine the cause of the slow response？（）A
The trace fileB
The fixed viewsC
The data dictionary viewsD
The operating system log fieldsE
The dynamic performance views.
考题
单选题You have many users complaining about slow inserts into a large table. While investigating the reason， you find that the number of indexes on the table is high. You want to find out which indexes are not being used. Which method would you follow to achieve this？（）A
enable index monitoring and query the DBA_OBJECTS viewB
enable index monitoring and query the DBA_INDEXES viewC
enable index monitoring and query the V$OBJECT_USAGE viewD
enable index monitoring and view the DBA_INDEXTYPE_COMMENTS view
考题
单选题You have applications that have frequently executed queries, and produce small and static result sets.You configure the sqlnet.ora file in the client machine to set a nonzero value for the OCI_RESULT_CACHE_MAX_SIZE parameter. What is the purpose of this configuration?（）A
to avoid round trips to the server by enabling caching of query results in client memoryB
to improve performance by storing a copy of the data from the private SQL area of the PGAC
to enhance the query performance by creating a cache in the client memory for sorting operationsD
to avoid the storing of query plans and results in the server by creating a cache in the client memory
考题
单选题View the Exhibits. You performed operations on the DEPT4 table as shown in the Exhibit. When you perform the FlashbackVersions Query， you find that the first two updates are not listed. What could be the reason？（）A
The row movement is not enabled on the table.B
The first two updates were not explicitly committed.C
The Flashback Versions Query lists only the most recent update.D
The Flashback Versions Query stops producing rows after it encounters a time in the past when the table structure was changed.
热门标签
最新试卷
