IBM 000-918 EXAM QUESTIONS & ANSWERS. Query the sysmaster database sysonlinelog table. D. Execute onstat -m. Correct Answer: C Section: (none) Explanation Explanation/Reference: QUESTION

IBM 000-918 EXAM QUESTIONS & ANSWERS

Number: 000-918Passing Score: 800Time Limit: 120 minFile Version: 45.5

http://www.gratisexam.com/

IBM 000-918 EXAM QUESTIONS & ANSWERS

Exam Name: System Administration for IBM Informix Dynamic Server V11

Realtests

QUESTION 1Click the Exhibit button.

Given the sqexplain output in the exhibit, which SQL statement will make the est_rows column accurate?

A. update statistics high for tableB. update statistics high for systablesC. update statistics high for table ordersD. update statistics high for table customer

Correct Answer: ASection: (none)Explanation

Explanation/Reference:

QUESTION 2Which two protocols are used on a Linux platform for IPC connections? (Choose two.)

A. fast fiberB. shared memoryC. stream pipeD. named pipeE. local loopback

Correct Answer: BCSection: (none)Explanation



In the exhibit, how does an IDS database administrator or programmer ensure that only committed data will beseen and that no locking errors will occur?

A. Change user 1 isolation level to dirty read.B. Change user 2 isolation level to dirty read.C. Change user 1 isolation level to committed read last committed.D. Change user 2 isolation level to committed read last committed.

Correct Answer: DSection: (none)Explanation


QUESTION 4You detected excessive memory usage that might be caused by a memory leak in the application. Which twocommands would be useful in this scenario? (Choose two.)

A. onstat -uB. onstat -g sql -r 120C. onstat -g ses -r 60D. onstat -g mgmE. onstat -g mem

Correct Answer: CESection: (none)Explanation


QUESTION 5Which type of backup and restore (BAR) utility would be suited for restoring a single table from a level 0 backupto a specific point in time?

A. onbarB. ontapeC. archeckerD. onarchive

Correct Answer: CSection: (none)Explanation


QUESTION 6When determining the physical log size, what should you consider?


A. RTO_SERVER_RESTART configuration parameterB. DYNAMIC_LOGS configuration parameterC. PHYSBUFF configuration parameterD. LOGFILES configuration parameter



QUESTION 7An IDS server has its LRU_MIN_DIRTY set to 1 and its LRU_MAX_DIRTY set to 2. Occasionally the

checkpoint blocks user transactions from doing updates to the database for too long. How should the databaseadministrator correct this situation?

A. Set onconfig parameter AUTO_CKPT to 1 and follow any advice in online.log.B. Increase the number of page cleaners (i.e. flushers).C. Increase the buffer pool size.D. Set the onconfig parameter RTO_SERVER_RESTART to "on".



QUESTION 8Which two statements are true for an hierarchical routing topology when setting up SQLHOSTS server group?(Choose two.)

A. Root and nonroot servers only need to maintain their leaf node server groups.B. Root and nonroot servers must each maintain all server groups within the enterprise.C. Enterprise Replication will transmit exactly the SQLHOSTS information, there is no need to maintain them.D. Each leaf server must have SQLHOSTS information only for itself and its parent.E. SQLHOSTS entries for nodes that do not directly connect are not required.

Correct Answer: BDSection: (none)Explanation


QUESTION 9Which memory area is used for log records for smart objects?

A. virtual portion of shared memoryB. logical log buffersC. /tmpD. DBSPACETEMP

Correct Answer: BSection: (none)Explanation


QUESTION 10Given the following 'onstat -g arc' information:

IBM Informix Dynamic Server Version 11.10.FC1 -- On-Line -- Up 45:18:13 -- 38912 Kbytes

num DBSpace Q Size Q Len Buffer partnum size scanner

Dbspaces - Archive Statusname number level date log log-position

rootdbs 1 0 02/11/2007.22:01 43 0x5338c1 02/14/2007.22:01 66 0x1b2e82 02/16/2007.22:01 75 0x1d2e8dbs1 2 0 02/14/2007.22:01 43 0x5338c1 02/14/2007.22:01 66 0x1b2e82 02/16/2007.22:01 75 0x1d2e8

On February 16, 2007, at 1:00 PM, a chunk in dbspace bs1 encountered hardware failure.

Which method will restore all of the data, to the point of failure, to a replacement disk drive?

A. a level 0 and 2 restore followed by a logical log restoreB. a level 0 and 1 restore onlyC. a level 0 and 1 restore followed by a logical log restoreD. a level 0, 1, and 2 restore followed by a logical log restore



QUESTION 11What will the setting "SQLTRACElevel=LOW,ntraces=2000,size=2,mode=global" within the Informix onconfig file record?

A. statement statistics, statement text, and list of table namesB. statement text, host variables, and statement iteratorsC. statement statistics, statement text, and statement iteratorsD. statement text, statement iterators, and database name



QUESTION 12Which command would be used to monitor disk activity per chunk?

A. onstat -g iogB. onstat -dC. onstat -g iofD. onstat -F



QUESTION 13An Informix database server has been configured with the following parameters:

BAR_MAX_BACKUP 5BAR_NB_XPORT_COUNT 4BAR_XFER_BUF_SIZE 10

How many data buffers will be created during an onbar parallel backup attempt?

A. 50B. 20C. 40D. 25



QUESTION 14The table called "state" has lock mode set to row within an unbuffered logged database. The onconfig file hasUSELASTCOMMITTED 'COMMITTED READ' set. One user session has run the following:

begin work;select * from state where code = "AK";update state set sname = "ALASKA" where code = "AK";

The results from the SQL select statement run by user one was:

AK Alaska

Session two runs the following (session one is still connected):set isolation to dirty read;select * from state where code = "AK";

What will session two see when they run the above SQL statements?

A. AK and AlaskaB. AK and ALASKAC. Error code 244 and isam 107.D. The session waits until user one is finished processing.



QUESTION 15You are receiving an error when trying to drop a chunk that you think is empty. Which command will show you ifany object is still allocating part of the chunk?

A. oncheck -peB. onstat -dC. oncheck -cDD. oncheck -cc



QUESTION 16Informix Dynamic Server generated the following messages during fast recovery.

16:34:37 Physical log file overflow16:34:37 Successfully extend physical log space

What will be the location of the extended physical log space?

A. The root dbspaceB. PHYSLOG_OVERFLOWC. PHYSDBSD. PLOG_OVERFLOW_PATH



QUESTION 17How can a database administrator remotely view the entire online.log?

A. Query the sysadmin database command_history table.B. Execute oncheck -showlog.C. Query the sysmaster database sysonlinelog table.D. Execute onstat -m.



QUESTION 18Which two utilities will help a database administrator diagnose problems with IDS archive media? (Choose two.)

A. oncheckB. onlogC. onbarD. archeckerE. onmonitor

Correct Answer: CDSection: (none)Explanation


QUESTION 19Given the following:

MAX_PDQPRIORITY=100PDQPRIORITY=0

Which two configuration parameters will allow you to increase memory availability to a memory-intensivequery? (Choose two.)

A. SHMADDB. EXTSHMADDC. DS_NOPDQ_QUERY_MEMD. SHMVIRT_ALLOCSEGE. DS_TOTAL_MEMORY



QUESTION 20In which two ways should a database administrator check the data buffer pool cache rate? (Choose two.)

A. onstat -g memB. onstat -pC. a select from the sysprofile tableD. a select from the sysbufpool tableE. onstat -P



QUESTION 21What are two ways to avoid points of media failure? (Choose two.)

A. Use the DATASKIP parameter in onconfig.B. Use the DRAUTO parameter in onconfig.C. Use the ISM_DATA_POOL parameter in onconfig.D. Use onspaces .E. Use onspaces -f.

Correct Answer: AESection: (none)Explanation


QUESTION 22Depending on a configuration parameter some onstat commands are restricted to DBSA users and show themessage "Must be a DBSA to run this program". Which two onstat commands have that restriction? (Choosetwo.)

A. onstat -g sscB. onstat -uC. onstat -g hisD. onstat -g athE. onstat -g tpf

Correct Answer: ACSection: (none)Explanation


QUESTION 23What are two NETTYPE configurations for configuring replication connectivity between separate computers?(Choose two.)

A. onipcstrB. ontlitcpC. onipcnmpD. onsoctcpE. onipcshm



QUESTION 24A large database system containing 100 dbspaces lost a critical dbspace.

What is the quickest way to recover dbspace1?

A. Cold restore all dbspaces.B. Cold restore critical dbspaces and dbspace1 followed by a hot restore of the remaining dbspaces.C. Cold restore critical dbspaces and dbspace1 followed by a cold restore of the remaining dbspaces.D. Cold restore critical dbspaces and dbspace1 followed by a warm restore of the remaining dbspaces.



QUESTION 25How should you convert an ASCII character to its decimal representation?

A. Call the ASCII() function.B. Build a C UDR to return the decimal value of the character.C. Call the TO_CHAR() function.D. Call the TO_HEX() function.



QUESTION 26Which two apply to Kernel-Asynchronous Input/Output (KAIO)? (Choose two.)

A. KAIO resources are only allocated at system startup.B. KAIO services I/O requests for only critical dbspaces.C. KAIO does not require a switch between CPU and AIO virtual processors.D. KAIO is started when mirror dbspaces exist.E. KAIO is assigned based on the number of CPU VPs.



QUESTION 27If the user informix is currently connected to the database stores_demo, which SQL statement will show theinformation stored in the Query Drill-Down buffer?

A. select * from syssqltraceB. select * from sysmaster:syssqltraceC. select * from sysadmin:syssqltraceD. select * from sysuser:syssqltrace



QUESTION 28Your company has a new business requirement concerning the maximum amount of data loss in the event thatthe database host server and entire disk subsystem suffer from complete hardware failure. The newrequirement says that on average no more than 10 minutes worth of data must be at risk. Which action shouldyou take?

A. Set checkpoints to occur every 10 minutes.B. Perform a manual log backup every 10 minutes.C. Size the physical log to hold no more than 10 minutes worth of data.D. Size the log files so that a log file will fill at least every 10 minutes and use continuous log backups.



QUESTION 29The system is performing poorly. The vmstat listing indicates the following:

502773 Active virtual pagesSize of free list is 85116Processes swapped in 20Processes swapped out 30P Pages paged out 17Device interrupts per second 1503System calls per second 1102Context switch rate 353

What must be done to improve performance?

A. Add more memory.B. Add a more powerful CPU.C. Add a faster network card.D. Add disk with faster I/O.



QUESTION 30Considering this message in the online.log:

14:01:45 Action: Run 'oncheck -cd 1048992'

Which command would be used to perform the recommended action?

A. Execute function admin("check partition",1048992).B. Execute function oncheck("cd",1048992).C. Execute function admin("oncheck -cd",1048992).D. Execute function task("check data",1048992).



QUESTION 31What are two benefits of enabling the automatic index replication feature (onmode -d idxauto on) in an HDRenvironment? (Choose two.)

A. Eliminates rollforward errors during recovery.B. Transfers the index from the primary without rebuilding the index.C. Transfers only the affected fragment(s) to repair a corrupt index.D. Blocks the primary server by performing the checkpoint before sending the index to the secondary.E. Creates the index on the primary but not on the secondary server.



QUESTION 32Which two methods would user Informix use to increase the size of a dbspace? (Choose two.)

A. Execute the onparams program to create a new chunk.B. Execute the onspaces program to grow an existing chunk.C. Execute an SQL function inside the sysmaster database.D. Execute the onspaces program to add a new chunk.E. Execute an SQL function inside the sysadmin database.

Correct Answer: DESection: (none)Explanation


QUESTION 33What are two ways to add logging to a database? (Choose two.)

A. ontapeB. ontape 1C. ontapeD. ontape 2



QUESTION 34Which three rules for UPDATE STATISTICS are recommended? (Choose three.)

A. Run UPDATE STATISTICS LOW on columns of a multi-column index.B. Run UPDATE STATISTICS MEDIUM on all columns of a multi-column index.C. Run UPDATE STATISTICS MEDIUM for all columns that do not head an index.D. Run UPDATE STATISTICS HIGH on columns that head an index.E. Run UPDATE STATISTICS DROP DISTRIBUTIONS on a table before running any other UPDATE

STATISTICS statement.

Correct Answer: ACDSection: (none)Explanation


QUESTION 35What are two valid functional indexes? (Choose two.)

A. a B-tree index which stores the results of a functionB. a B-tree index on a variant functionC. a composite index storing a column in a table and the result of a user-defined functionD. a function used by the index may not accept argumentsE. an index on a built-in function



QUESTION 36Which three planning and maintenance tasks should be performed for high-use tables? (Choose three.)

A. Place those tables in dbspaces with 16k page sizes for faster retrieval.B. Place those tables on high performance disks.C. Change them to RAW tables based on onstat monitoring during peak periods.D. Periodically check for large number of extents and reload as necessary.E. Calculate growth and set the next-extent size as appropriate.

Correct Answer: BDESection: (none)Explanation


QUESTION 37Which two statements about RTO_SERVER_RESTART are correct? (Choose two.)

A. RTO_SERVER_RESTART will trigger a checkpoint when necessary depending on its value.B. RTO_SERVER_RESTART specifies the desired amount of time fast recovery will take.C. RTO_SERVER_RESTART will adjust the physical log size in order to prevent blocked transactions.D. RTO_SERVER_RESTART will adjust LRU_MAX_DIRTY and LRU_MIN_DIRTY in order to minimize

checkpoint duration.E. Checkpoints are triggered by either RTO_SERVER_RESTART or CKPTINTVL, whichever threshold is met

first.

Correct Answer: ABSection: (none)Explanation


QUESTION 38A select that returns exactly one row is performed to a remote server over a TCP/IP connection. The buffer sizereturned is 8K. The following environment variables are set:

IFX_DEFERRED_PREPARE = 1FET_BUF_SIZE = 10000OPTOFC = 1IFX_AUTOFREE = 1

How many messages will be exchanged?

A. 10B. 4C. 2D. 1



QUESTION 39Given the following entries in the onconfig file on machine unix_host, which sqlhost file is correct?

DBSERVERNAME phoenix_idsNETTYPE tlitcp,2,100,CPU

A. phoenix_ids unix_host ontlicp port1B. tlitcp phoenix_ids unix_host port1C. phoenix_ids tlitcp unix_host port1D. ontlitcp unix_host phoenix_ids port1



QUESTION 40A database server has 10 dbspaces and each of them consist of four 2GB chunks. Onbar is used as thebackup utility. The database administrator performs a whole-system backup everyday and it takes 10 hours tocomplete. What should be done to reduce the backup time?

A. Increase the value of the BAR_XFER_BUF_SIZE configuration parameter.B. Increase the value of the BAR_WORKER_MAX configuration parameter.C. Increase the TAPEBLK size.D. Increase the value of the BAR_MAX_BACKUP configuration parameter.



QUESTION 41Which oninit option allows the database server to quickly return to online mode, yet space used by temporarytables on disk is not reclaimed?

A. -uB. -sC. -pD. -k



QUESTION 42Which class of VP can only have a single VP allocated?

A. TLIB. MSCC. ADMD. ENCRYPT



QUESTION 43In IDS version 11, what are two performance gains by enabling private memory cache for every CPU VP?(Choose two.)

A. Provides less buffer cache overhead to manage.B. Improves concurrency which usually involves mutex locking when the multiprocessor is turned on.C. Increases control server memory allocation on large systems.D. Increases privacy to memory content for all virtual processors.E. Decreases access time to memory blocks.

Correct Answer: BESection: (none)Explanation


QUESTION 44When inserting many rows of data into the same table in an application, which two ways should be used toimprove insert performance? (Choose two.)

A. Set your isolation level to dirty read.B. Prepare the insert statement each time.C. Set Informix parameter FET_BUF_SIZE to 32766.D. Set the Informix parameter LARGE_LOADS to "on".E. Use an insert cursor.



QUESTION 45A problem has been reported with the primary key constraint (customer_num), partnum 1048928 on thestores_demo:customer table (tabid of 100). Which two commands can be run to perform a check on thatindex? (Choose two.)

A. oncheck -ci stores_demo:"informix".customer#customer_numB. oncheck -ci stores_demo:"informix".customer,customer_numC. oncheck -cd stores_demo:"informix".customerD. execute function admin("CHECK DATA", "1048928")E. execute function admin("CHECK INDEX", "1048928")

Correct Answer: ADSection: (none)Explanation


QUESTION 46A database administrator (DBA) is performing an onbar restore and the restore process is taking a long time tocomplete. The DBA does not know how far the restore has completed. Which configuration parameter should aDBA set to monitor the restore process?

A. Set the BAR_HISTORY configuration parameter to monitor the onbar process.B. Set the BAR_PROGRESS_FREQ configuration parameter prior to the restore start.C. Set the BAR_DEBUG_LOG configuration parameter prior to the restore start.D. Set the BAR_PROCESS_MON configuration parameter prior to the restore start.



QUESTION 47Given the following Enterprise Replication command:

cdr change config "parameter_name value"

Which two statements are true when using this command? (Choose two.)

A. The option is available for all of the Enterprise Replication configuration parameters and environmentvariables.

B. The onconfig file will be updated with the new value.C. The change is permanent.D. The replicate needs to be stopped and re-started for the new settings to be active.E. The change can occur when the replicate is active.

Correct Answer: AESection: (none)Explanation


QUESTION 48What is a way that a non-privileged database administrator can change thedatabase server operating modes from one to another (e.g.. online to quiescent)?

A. Become a member of the DBSSO group.B. Become a member of the DBSA group.C. Use SINGLE_USER_MODE_WITH_DBSA.D. Become a system user.



QUESTION 49How can a database administrator set the default lock mode to row for all created tables?

A. By setting the onconfig parameter DEF_TABLE_LOCKMODE.B. Assign the new attribute LOCKMODE=row when creating a database.C. By passing an attribute to the connection statement.D. Is always set to lock mode row when using new system default.



QUESTION 50After an abnormal termination of IDS, you receive the following error in the message log when trying to restartthe engine on a UNIX or Linux platform:

oninit: Fatal error in shared memory creationshared memory already initialized

Which corrective action should you take?

A. Use ipcs and ipcrm to delete orphaned memory segments.

B. Use onmode -z to reinitialize IDS memory.C. Execute oninit -ty to restart IDS.D. Use the memcheck utility to search for orphaned semaphores.




After loading 1,000 rows into the orders table on February 22nd the query shown in the exhibit was run onFebruary 28th.

On which column should you run update statistics?

A. column customer.idconstr_time 2007-02-27 11:36:57.00000ustnrows 76.00000000000

B. column customer.nameconstr_time 2007-02-24 11:36:57.00000ustnrows 66.00000000000

C. column orders.idconstr_time 2007-02-20 11:36:57.00000ustnrows 1066.00000000000

D. column orders.typeconstr_time 2007-02-27 11:36:57.00000ustnrows 66.0000000000



QUESTION 52Which two actions occur when the HDR primary node fails and its secondary performs switchover whenDRAUTO is set to 1 (RETAIN_MODES)? (Choose two.)

A. After the primary is recovered, the secondary database server goes through a graceful shutdown andswitches back to read-only.

B. The secondary database server waits for the next action to take place.C. The secondary database server automatically becomes a standard database server.D. The secondary database server requires manual switchover.E. The secondary database server switches directly back to the primary type without shutdown.



QUESTION 53What should a database administrator do to allow at most 10 PDQ queries at one time, with each query usingat most 50MB of memory?

A. Set MAX_PDQPRIORITY to 10, set DS_TOTAL_MEMORY to 500MB.B. Set MAX_PDQPRIORITY to 100, set PDQPRIORITY to 10, set DS_MEM_QUERY to 50.C. Set DS_MAX_QUERIES to 10, set PDQ_MEM_QUERY to 100.D. Set DS_TOTAL_MEMORY to 500MB, set DS_MAX_QUERIES to 10.



QUESTION 54Which two options apply to Enterprise Replication (ER) row data sbspaces? (Choose two.)

A. ER data sbspaces store ER transaction records.B. ER data sbspaces are specified by CDR_QHDR_DBSPACE configuration parameter.C. You must create at least one row data sbspace before starting ER.D. You can change the default logging mode of a row data sbspace.E. A row data sbspace cannot be dropped.

Correct Answer: CDSection: (none)Explanation



QUESTION 55During the creation of an index, which two system catalogs will be updated with information that is equivalent toan UPDATE STATISTICS operation in a mode that depends on the type of index? (Choose two.)

A. sysaggregatesB. syscolumnsC. sysdistribD. sysreferencesE. syscolauth



QUESTION 56Given INFORMIXDIR is set to /usr/informix and INFORMIXSQLHOSTSis set to /sqlhosts.myinstall, where on the file system would you expect to find the actualsqlhosts.myinstall?

A. /usr/informix/etcB. /tmpC. /usr/informixD. /



QUESTION 57In a 4-node update-anywhere Enterprise Replication (ER) setup, which method can be used to manage andconfigure ER to rename a column, table, or database while replication is active?

A. Run RENAME on all participant nodes defined in the replicate.B. Define a master template for clone tables to target nodes.C. Set up firing triggers for synchronization.D. Use the cdr alter --on option.



QUESTION 58An unbuffered logging database has been created in a dbspace called "dbs1". The system also has twotemporary dbspaces created, which are "tp1" and "tp2".

What will happen when the following SQL statement is run?

create temp table t(a int) fragment by expressiona = 1 in tp1, a = 2 in tp2;

A. Both fragments will be created in the rootdbs.B. Both fragments will be created where the database was created.C. The fragments will be created in "tp1" and "tp2".D. An SQL error will be returned.



QUESTION 59Which two will verify the extents on the disk? (Choose two.)

A. oncheck -ceB. oncheck -ccC. EXECUTE FUNCTION task('check extents');D. EXECUTE FUNCTION admin('verify extents');E. oncheck -pt



QUESTION 60Given a datetime column, how should you find the last day of the month?

A. Convert the datetime to a date then call the LAST_DATE( ) functionB. Use the MONTH_LENGTH() function.C. Write a C UDR which returns the last day of the month.D. Use the LAST_DAY() function.



QUESTION 61Which mechanism would a database administrator use to create a SQL-like group of users to managepermissions?

A. Role SeparationB. Pluggable Authentication Module (PAM)C. Label-Based Access Control (LBAC)D. Lightweight Directory Access Protocol (LDAP)



QUESTION 62A user wants to ensure locking errors are not encountered when selecting data. What is the highest isolationlevel that the user may use?

A. read only dirty dataB. committed readC. last committedD. dirty read avoid updates



QUESTION 63Which command can be used to get the value of CLIENT_LOCALE from a session?

A. onstat -g env all CLIENT_LOCALEB. onstat -g ses 31C. onstat -g ses 31 CLIENT_LOCALED. onstat -g val CLIENT_LOCALE



QUESTION 64The table called customer contains 0.5 million rows and an index is being created on an integer column. Whilethe index is being created, the statistical information is automatically collected. Which default resolutionpercentage will be used?

A. 0.25B. 0.50C. 0.75D. 1.00




14:45:29 DR: ping timeout14:45:29 DR: Receive error14:45:31 DR: Turned off on primary server14:45:31 Checkpoint Completed: duration was 170 seconds.

What are two time contributors to the checkpoint duration after a DR ping timeout? (Choose two.)

A. Time taken to flush DR buffers.B. Time taken for secondary to respond, maximum which is determined by DRTIMEOUT.C. Time used by the transport and network layers within operating system.D. Time spent in I/O disk flush.E. Time consumed in applying logs in the secondary.



QUESTION 66If the user Informix is connected to a database called "stores_demo", which command should be used to checkthe data for the part number shown?

A. Execute function admin("CHECK DATA", "1048927").B. Execute function sysadmin:admin("CHECK DATA", "1048927").C. Execute function sysutils:admin("CHECK DATA", "1048927").D. Execute function sysmaster:admin("CHECK DATA", "1048927").



QUESTION 67What is the purpose of FASTPOLL onconfig parameter?

A. Reduces the notify overhead for network messages.B. Employs an aggressive AIO VP scheduling algorithm.C. Disables Kernal Asnchronous I/O in favor of AIO.D. Optimizes SQL thread monitoring.



QUESTION 68How should you convert an ASCII character to its decimal representation?

A. Call the ASCII() function.B. Build a C UDR to return the decimal value of the character.C. Call the TO_CHAR() function.D. Call the TO_HEX() function.



QUESTION 69How can a database administrator remotely view the entire online.log?

A. Query the sysadmin database command_history table.B. Execute oncheck -showlog.C. Query the sysmaster database sysonlinelog table.D. Execute onstat -m.



QUESTION 70You need to determine the last time a session has performed a network read or write operation to see if it isidle. Which command do you use?

A. onstat -g nttB. onstat -g sesC. onstat -g iovD. onstat -g ntd



QUESTION 71An user with DBSA role received the error:

27010: Only an administrative user or informix can connect in single user mode.

Which parameter should be configured to fix the problem?

A. ALLOW_SINGLE_USER_DBAB. SINGLE_USER_MODE_WITH_DBSAC. SINGLE_USER_DBAD. SINGLE_USER_CONNECT_DBSA



QUESTION 72You want to have a database server communicate with a new remote database server on a new host, whichthree items may be modified? (Choose three.)

A. sqlhostsB. servicesC. hosts fileD. DBSERVERALIASES

E. SECURITY_LOCALCONNECTION

Correct Answer: ABCSection: (none)Explanation


QUESTION 73What is the only way in SQL that you CANNOT restrict access to the data?

A. by serverB. by columnC. by rowD. by fragment



QUESTION 74A user runs the following function in dbaccess:

execute function sysadmin:task("CHECK EXTENTS", "1").

What will happen?

A. The command will check the extent of the root dbspace and print the numeric return code to the screen.B. The command will check the extent of the root dbspace and print the output text to the screen.C. The command will check shared memory fragmentation and print output text to the screen.D. The command will check shared memory fragmentation and print the numeric return code to the screen.



QUESTION 75What are two ways that a database administrator should look up IDS server text associated with an SQL errornumber? (Choose two.)

A. sqliprintB. finderrC. call the task() UDRD. onmonitorE. onstat

Correct Answer: BCSection: (none)

Explanation


QUESTION 76The system is performing poorly. The vmstat listing indicates the following:

Size of free list is 85116Processes swapped in 0Processes swapped out 0Pages paged in 30Pages paged out 0Device interrupts per second 1503System calls per second 21155Context switch rate 353

What must be done to improve performance?

A. Add memory.B. Add a more powerful CPU.C. Add disk space.D. Add disk with faster I/O.



QUESTION 77Given the following message log information:

15:56:29 Physical Recovery Started at Page (1:1210).

15:56:29 Physical Recovery Complete: 147 Pages Examined, 10 Pages Restored.

15:56:29 Logical Recovery Started.

15:56:29 10 recovery worker threads will be started.

15:56:32 Logical Recovery has reached the transaction cleanup phase.

15:56:32 Logical Recovery Complete.

5 Committed, 2 Rolled Back, 0 Open, 0 Bad Locks

What would be the reason for the difference in 'Pages Examined' and 'Pages Restored' during physicalrecovery?

A. The database server might physically log a page image multiple times between checkpoints.B. The physical recovery restores only the first logged page image.C. It is an expected behavior.D. The physical log size is too large.

Correct Answer: ASection: (none)

Explanation



The contents of the exhibit comes from a users sqexplain.out file.

What is shown in the exhibit?

A. A query which executed did not have enough information on the index named idx_01 so the IDS Serverautomatically updated statistics on idx_01.

B. The information printed out by update statistics when run in automatic mode by the DBA.C. A create index was executed on table "foo" which created statistics and medium distributions for column "a".D. Distribution data was too old for table "foo" and the IDS server needed to automatically refresh statistics.



QUESTION 79When the IDS server exceeds the number of locks in the onconfig file, what will the IDS server do?

A. Allocate a finite set of additional locks to the server.B. Start promoting row level locks to page level locks.C. Immediately return an error to the application.D. The server never runs out of locks, just memory.



QUESTION 80Considering this output from an onstat -g dic command:

Dictionary Cache: Number of lists: 31, Maximum list size: 10

list# size refcnt dirty? heapptr table name-------------------------------------------------------------?*middle part snipped* ...

Total number of dictionary entries: 963

What would be the proper setting for optimal performance?

A. DS_HASHSIZE 97B. DD_HASHSIZE 37C. DD_POOLSIZE 103

D. DD_HASHSIZE 101




After loading 1,000 rows into the orders table on February 22nd the query shown in the exhibit was run onFebruary 28th.

On which column should you run update statistics?

A. column customer.idconstr_time 2007-02-27 11:36:57.00000ustnrows 76.00000000000

B. column customer.nameconstr_time 2007-02-24 11:36:57.00000ustnrows 66.00000000000

C. column orders.idconstr_time 2007-02-20 11:36:57.00000ustnrows 1066.00000000000

D. column orders.typeconstr_time 2007-02-27 11:36:57.00000ustnrows 66.0000000000



QUESTION 82When using temporary smart blobspaces, what is always different from non-temporary smart blobspaces?

A. Creation and deletion of space and addition of chunks is logged.B. User data is not logged.C. Metadata is not logged.D. Addition of chunks is permitted.



QUESTION 83What are two performance benefits when enabling AUTO_AIOVPS? (Choose two.)

A. Improves I/O throughput so that I/O to disk is being processed as fast as the requests occur.

B. Improves disk read and write locking and concurrency issues.C. Eases recovery time because during fast recovery, no AIO threads are started.D. Improves checkpoint time in a highly updateable system with reduced buffer contention efficiently handled

by increase page-cleaner threads triggered on load levelE. Keeps the system CPU VPs utilization low because this feature does not work with raw chunks.

Correct Answer: ADSection: (none)Explanation



SELECT task("check data",partnum) FROM sysmaster:systables WHEREtrunc(partnum/1048575)=1 ;

What does the above statement do?

A. Runs oncheck -ci on every index in the sysmaster database.B. Runs oncheck -cd on the sysmaster database.C. Runs oncheck -cd on every table in the rootdbs.D. Runs oncheck -ce.



QUESTION 85Considering this message in the online.log:

14:01:45 Action: Run 'oncheck -cd 1048992'

Which command would be used to perform the recommended action?

A. Execute function admin("check partition",1048992).B. Execute function oncheck("cd",1048992).C. Execute function admin("oncheck -cd",1048992).D. Execute function task("check data",1048992).



QUESTION 86Which two actions will have the most impact in reducing transaction blocking during checkpoints (Choose two.)

A. Increase the physical log buffer (i.e. onconfig parameter PHYSBUFF).

B. Increase the physical log size.C. Increase the size of the buffer pool.D. Increase the size of the logical log space.E. Increase the logical log buffer (i.e. onconfig parameter LOGBUFF).



QUESTION 87What are two ways to prevent DDRBLOCK mode in Enterprise Replication? (Choose two.)

A. Turn on DYNAMIC_LOGS to allow a new log file addition.B. Enable CDR_MAX_DYNAMIC_LOGS to cater for unusual log activity.C. Use a small log file size but many log files.D. Set a large enough send and receive queue to handle large transactions.E. Keep the transaction size small to avoid spooling to disk when all nodes are active.



QUESTION 88In which two ways should a database administrator check the data buffer pool cache rate? (Choose two.)

A. onstat -g memB. onstat -pC. a select from the sysprofile tableD. a select from the sysbufpool tableE. onstat -P



QUESTION 89Given the following sqlhosts file:

ipanema101 group - - i=101dbsrvr101 ontlitcp ipanema dbsrvr101tcp g=ipanema101ubatuba102 group - - i=102dbsrvr102 ontlitcp ubatuba dbsrvr102tcp g=ubatuba102

Which two commands must be used to start Enterprise Replication (ER) between the servers? (Choose two.)

A. cdr define server --connect=ipanema101 --init ipanema101

B. cdr define server --connect=dbsrvr101 --sync=ubatuba102 --init ipanema101C. cdr define server -c dbsrvr102 -S dbsrvr101 -I ubatuba102D. cdr define server -c dbsrvr101 -S ubatuba102 -I dbsrvr101E. cdr define server -I ubatuba102



QUESTION 90If you have three controllers and three disks for your logs, what is the recommended layout for logical logs?

A. Put all the logs in the rootdbs.B. Add all the logs to one of the disks.C. Put a group of logical logs on each disk.D. Add all logs to all the disks.



QUESTION 91When making a high rate of connections, which VP class should be tuned to assist with user authentication?

A. ADMB. MSCC. TLID. SHM



QUESTION 92The cross-server distributed query shown below fetches six times more rows in the remote database.

SELECT p1, c2, p2 FROM d1@s1:parent, d2@s2:childWHERE p1 = c1 INTO TEMP jntabWITH NO LOG;

CREATE TABLE parent (p1 int primary key,p2 char(500) );

What are two ways to improve query response time? (Choose two.)

A. Add more buffers in the remote host.

B. Turn on PDQPRIORITY on the session level.C. Use PSORT_NPROCS to increase sort speed.D. Insert into multiple temporary dbspaces to achieve I/O parallelism.E. Use DBUPSPACE to increase sort memory.



QUESTION 93What are two NETTYPE configurations for configuring replication connectivity between separate computers?(Choose two.)

A. onipcstrB. ontlitcpC. onipcnmpD. onsoctcpE. onipcshm



QUESTION 94Which three rules for UPDATE STATISTICS are recommended? (Choose three.)

A. Run UPDATE STATISTICS LOW on columns of a multi-column index.B. Run UPDATE STATISTICS MEDIUM on all columns of a multi-column index.C. Run UPDATE STATISTICS MEDIUM for all columns that do not head an index.D. Run UPDATE STATISTICS HIGH on columns that head an index.E. Run UPDATE STATISTICS DROP DISTRIBUTIONS on a table before running any other UPDATE

STATISTICS statement.

Correct Answer: ACDSection: (none)Explanation


QUESTION 95What are two ways to add logging to a database? (Choose two.)

A. ontapeB. ontape 1C. ontapeD. ontape 2



QUESTION 96The number of free buffers (q-pvt field of the onstat ntu) is constantly zero. Which two actions should beperformed? (Choose two.)

A. Increase the number of buffers with the environment variable IFX_NETBUF_PVTPOOL_SIZE.B. Increase the size of each buffer with the environment variable IFX_NTTBUF_SIZE.C. Increase the size of the fetch buffer with the environment variable FET_BUF_SIZE.D. Increase the size of the fetch buffer with the environment variable BIG_FET_BUF_SIZE.E. Increase the initial stack size for each thread with STACKSIZE parameter.



QUESTION 97What are two advantages of a combined ER/HDR scenario? (Choose two.)

A. HDR supports encryption.B. HDR secondary server can participate in Enterprise Replication.C. When failing over to an HDR secondary, Enterprise Replication automatically starts.D. HDR can replicate all UDTs, UDRs, and data blade modules.E. HDR secondary can be used to off-load Enterprise Replication processing.



QUESTION 98Both standard and temporary dbspaces are listed in the DBSPACETEMP configuration parameter orenvironment variable. Which rule applies?

A. Sort, backup, implicit, and non-logging explicit temporary tables are created in temporary dbspaces ifadequate space exists.

B. Backup, implicit, and non-logging explicit temporary tables are created in temporary dbspaces if adequatespace exists. Sort temporary tables are specified by the PSORT_DBTEMP environment variable.

C. Sort, backup, implicit, and non-logging explicit temporary tables are created in all available dbspaces ifadequate space exists.

D. Explicit temporary tables created without the WITH NO LOG option are created in the root dbspace.



QUESTION 99Which command will turn off automatic checkpoints?

A. oninit -wmB. onmode -wfC. onspaces -wfD. onmode -c Off



QUESTION 100Which two will verify the extents on the disk? (Choose two.)

A. oncheck -ceB. oncheck -ccC. EXECUTE FUNCTION task('check extents');D. EXECUTE FUNCTION admin('verify extents');E. oncheck -pt




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IBM 000-918 EXAM QUESTIONS & ANSWERS. Query the sysmaster database sysonlinelog table. D. Execute onstat -m. Correct Answer: C Section: (none) Explanation Explanation/Reference: QUESTION