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多选题
The OPTIMIZER_USE_PLAN_BASELINES parameter is set to TRUE. The optimizer generates a plan for a SQL statement but does not find a matching plan in the SQL plan baseline. Which two operations are performed by the optimizer in this scenario?（）
A
The optimizer adds the new plan to the plan history.
B
The optimizer selects the new plan for the execution of the SQL statement.
C
The optimizer adds the new plan to the SQL plan baseline as an accepted plan.
D
The optimizer adds the new plan to the SQL plan baseline but not in the ENABLED state.
E
The optimizer costs each of the accepted plans in the SQL plan baseline and picks the one with the lowest cost.
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更多 “多选题The OPTIMIZER_USE_PLAN_BASELINES parameter is set to TRUE. The optimizer generates a plan for a SQL statement but does not find a matching plan in the SQL plan baseline. Which two operations are performed by the optimizer in this scenario?（）AThe optimizer adds the new plan to the plan history.BThe optimizer selects the new plan for the execution of the SQL statement.CThe optimizer adds the new plan to the SQL plan baseline as an accepted plan.DThe optimizer adds the new plan to the SQL plan baseline but not in the ENABLED state.EThe optimizer costs each of the accepted plans in the SQL plan baseline and picks the one with the lowest cost.” 相关考题
考题
You want to enable automatic PGA memory management in your database. Which setting is required to achieve this?()
A. Set MEMORY_TARGET to zeroB. Set the STATISTICS_LEVEL parameter to BASICC. Set the WORKAREA_SIZE_POLICY parameter to MANUALD. Set the PGA_AGGREGATE_TARGET parameter to nonzero value
考题
You have the following requirements in relation to the detection of block corruption for your database instance:1. Check for logical self-consistency of data blocks when modified in memory.2. Checksums are calculated before and after the block change.3. Checks are performed for the lost writes to the physical standby database.Which method would help you perform the above checks automatically? （）A. Set the DB_SECUREFILE parameter to PERMITTEDB. Set the DB_ULTRA_SAFE parameter to DATA_ONLYC. Set the DB_LOCK_CHECKSUM parameter to TYPICALD. Set the DB_LOST_WRITE_PROTECT parameter to TYPICAL
考题
You set the following parameters in the parameter file and restarted the database:Which two statements are true regarding these parameters after the database instance is restarted?()
A. The MEMORY_MAX_TARGET parameter is automatically set to 500 MBB. The value of the MEMORY_MAX_TARGET parameter remains zero till it is changed manuallyC. The PGA_AGGREGATE_TARGET and SGA_TARGET parameters are automatically set to zeroD. The lower bounds of PGA_AGGREGATE_TARGET and SGA_TARGET parameters are set to 90 MB and 270 MB, respectively
考题
The OPTIMIZER_USE_PLAN_BASELINES parameter is set to TRUE. The optimizer generates a plan for a SQL statement but does not find a matching plan in the SQL plan baseline.Which two operations are performed by the optimizer in this scenario?（）A. The optimizer adds the new plan to the plan history.B. The optimizer selects the new plan for the execution of the SQL statement.C. The optimizer adds the new plan to the SQL plan baseline as an accepted plan.D. The optimizer adds the new plan to the SQL plan baseline but not in the ENABLED state.E. The optimizer costs each of the accepted plans in the SQL plan baseline and picks the one with the lowest cost.
考题
Examine the exhibit to view the parameters set in your parameter file. (Click the Exhibit(s) button.)You restart the instance.To what value will the MEMORY_MAX_TARGET parameter be set by default?()
A.120MB.320MC.480MD.600M
考题
Automatic data conversion will occur if which of the following happens?()
A. The client and server have different NLS_LANGUAGE settings.B. The client and server character sets are not the same, and the database character set is not a strict superset of the client character set.C. The client and server are in different time zones.D. The client requests automatic data conversion.E. The AUTO_CONVERT initialization parameter is set to TRUE.
考题
Which three statements correctly describe the features of the I/O calibration process?（）A、Only one I/O calibration process can run at a time.B、It automates the resource allocation for the Automated Maintenance Tasks.C、It improves the performance of the performance-critical sessions while running.D、It can be used to estimate the maximum number of I/Os and maximum latency time for the system.E、The latency time is computed only when the TIMED_STATISTICS initialization parameter is set to TRUE.
考题
You have specified the warning and critical threshold values of an application tablespace to be 60% and 70% respectively. From the tablespace space usage metrics， you find that the actual space usage has reached the specified warning threshold value， but no alerts have been generated. What could be the reason for this？（）A、 The EVENT parameter was not setB、 The SQL_TRACE parameter is set to FALSEC、 The Enterprise Manager Grid Control is not usedD、 The STATISTICS_LEVEL parameter is set to BASICE、 The TIMED_STATISTICS parameter is set to FALSE
考题
You have specified the warning and critical threshold values of an application tablespace to be 60% and 70%， respectively. From the tablespace space usage metrics， you find that the actual space usage has reached the specified warning threshold value， but no alerts have been generated. What could be the reason for this？（）A、The EVENT parameter was not set.B、The SQL_TRACE parameter is set to FALSEC、The Enterprise Manager Grid Control is not used.D、The STATISTICS_LEVEL parameter is set to BASICE、The TIMED_STATISTICS parameter is set to FALSE
考题
You work as a database administrator for Certkiller .com. Users complain that their query is taking a long time to complete. You suspect the database buffer cache size to be the reason， and you define an alert to be generated when the buffer cache hit metric goes below 85%. When you observe the dynamic performance views， you find that the buffer cache hit ratio is 81% but no alerts are being generated. What could be the reason for this problem？（）A、The advisory memory has been turned off.B、The DB_CACHE_ADVICE parameter has been set to OFF in the parameter file.C、The STATISTICS_LEVEL parameter has been set to BASIC in the parameter file.D、The TIMED_STATISTICS parameter has been set to FALSE in the parameter file.E、The STATISTICS_LEVEL parameter has been set to TYPICAL in the parameter file.
考题
You work as a database administrator for Certkiller .com. You want to create your database with the automatic undo management feature enable.Which two tasks must you perform to achieve this？（）A、Set the UNDO_RETENTION parameter to AUTO.B、Create an initial undo segment in undotablespace.C、Set the UNDO_RETENTION parameter to 900 or moreD、Set the initialization parameter UNDO_MANAGEMENT to AUTOE、Set the UNDO_MANAGEMENT parameter to the name of an undotablespace
考题
Which of the following statements is true regarding the initialization parameter DIAGNOSTIC_DEST？（） The default value is the value of the environment variable $ORACLE_HOME； if $ORACLE_HOME isn’t set A、 then the default is set to $ORACLE_BASE The default value is the value of the environment variable $ORACLE_BASE； if $ORACLE_BASE isn’t set，B、 then it is set to $ORACLE_HOMEC、 DIAGNOSTIC_DEST is always equal to $ORACLE_HOMED、 DIAGNOSTIC_DEST is always equal to $ORACLE_BASE
考题
You want to enable automatic PGA memory management in your database. Which setting is required to achieve this？（）A、 Set MEMORY_TARGET to zeroB、 Set the STATISTICS_LEVEL parameter to BASICC、 Set the WORKAREA_SIZE_POLICY parameter to MANUALD、 Set the PGA_AGGREGATE_TARGET parameter to nonzero value
考题
You included the following Automatic Storage Management （ASM） initialization parameter settings in the ASM initialization parameter file： INSTANCE_TYPE = ASM ASM_POWER_LIMIT = 11 LARGE_POOL_SIZE = 4M ASM_DISKGROUPS = DG1， DG2 DB_UNIQUE_NAME = +ASM You are unable to start the ASM instance. Which initialization parameter file setting（s） is not allowing the ASM instance to start？（）A、 only the INSTANCE_TYPE initialization parameter is set to an invalid valueB、 only the ASM_POWER_LIMIT initialization parameter is set to an invalid valueC、 only the LARGE_POOL_SIZE initialization parameter is set to an invalid valueD、 both the LARGE_POOL_SIZE and INSTANCE_TYPE initialization parameters are set to invalid values
考题
You configured automatic archive logging for the database. On the next startup the database runs for a while， but then hangs. After checking the alert log， you determine that all the online redo logs need archiving. Which step was skipped when you set up automatic archive log？（）A、LOG_ARCHIVE_DEST was not set in the parameter file.B、LOG_ARCHIVE_START was not set in the parameter file.C、alter database archivelog； was not executed in MOUNT mode.D、LOG_ARCHIVE_MAX processes were not set in the parameter file.
考题
单选题You have specified the warning and critical threshold values of an application tablespace to be 60% and 70%， respectively. From the tablespace space usage metrics， you find that the actual space usage has reached the specified warning threshold value， but no alerts have been generated. What could be the reason for this？（）A
The EVENT parameter was not set.B
The SQL_TRACE parameter is set to FALSEC
The Enterprise Manager Grid Control is not used.D
The STATISTICS_LEVEL parameter is set to BASICE
The TIMED_STATISTICS parameter is set to FALSE
考题
单选题You have specified the warning and critical threshold values of an application tablespace to be 60% and 70% respectively. From the tablespace space usage metrics， you find that the actual space usage has reached the specified warning threshold value， but no alerts have been generated. What could be the reason for this？（）A
The EVENT parameter was not setB
The SQL_TRACE parameter is set to FALSEC
The Enterprise Manager Grid Control is not usedD
The STATISTICS_LEVEL parameter is set to BASICE
The TIMED_STATISTICS parameter is set to FALSE
考题
单选题In your running instance， some of the initialization parameters are set as shown below： SGA_MAX_SIZE = 14GB DB_CACHE_SIZE = 1GB SHARED_POOL_SIZE = 3GB STATISTICS_LEVEL = BASIC PGA_AGGREGATE_TARGET = 0 You plan to enable Automatic Shared Memory Management but you are not able to set SGA_TARGET to a nonzero value. What could be the reason？（）A
The STATISTICS_LEVEL initialization parameter is set to BASICB
The PGA_AGGREGATE_TARGET initialization parameter is set to zero.C
The SGA_MAX_SIZE initialization parameter is set to less than 20 GBD
The DB_CACHE_SIZE initialization parameter is set to less than 5 GBE
The SHARED_POOL_SIZE initialization parameter is set to a nonzero value.
考题
单选题You are connected to a pluggable database (PDB) as a common user with DBA privileges. The STATISTICS_LEVEL parameter is PDB_MODIFIABLE. You execute the following: SQL ALTER SYSTEM SET STATISTICS_LEVEL = ALL SID = ‘*’ SCOPE = SPFILE; Which is true about the result of this command?（）A
The STATISTICS_LEVEL parameter is set to all whenever this PDB is re-opened.B
The STATISTICS_LEVEL parameter is set to ALL whenever any PDB is reopened.C
The STATISTICS_LEVEL parameter is set to all whenever the multitenant container database (CDB) is restarted.D
Nothing happens; because there is no SPFILE for each PDB, the statement is ignored.
考题
单选题You want to enable automatic PGA memory management in your database. Which setting is required to achieve this？（）A
Set MEMORY_TARGET to zeroB
Set the STATISTICS_LEVEL parameter to BASICC
Set the WORKAREA_SIZE_POLICY parameter to MANUALD
Set the PGA_AGGREGATE_TARGET parameter to nonzero value
考题
单选题You have included the following parameter settings in your SPFILE:// SGA_MAX_SIZE=8G SGA_TARGET=6G DB_CACHE_SIZE=2G SHARED_POOL_SIZE=1G LOG_BUFFER=64M DB_KEEP_CACHE_SIZE=960M Which statement is true if you modify the SGA_TARGET initialization parameter？（）A
The SGA_TARGET initialization parameter cannot be set to a value greater than 8GB
The DB_CACHE_SIZE initialization parameter cannot be set to a value less than 2GC
The DB_CACHE_SIZE initialization parameter cannot be set to a value greater than 2GD
The DB_KEEP_CACHE_SIZE initialization parameter cannot be set to a value greater than 960M E
The DB_KEEP_CACHE_SIZE initialization parameter cannot be set to a value less than 960M
考题
单选题You included the following Automatic Storage Management （ASM） initialization parameter settings in the ASM initialization parameter file： INSTANCE_TYPE = ASM ASM_POWER_LIMIT = 11 LARGE_POOL_SIZE = 4M ASM_DISKGROUPS = DG1， DG2 DB_UNIQUE_NAME = +ASM You are unable to start the ASM instance. Which initialization parameter file setting（s） is not allowing the ASM instance to start？（）A
only the INSTANCE_TYPE initialization parameter is set to an invalid valueB
only the ASM_POWER_LIMIT initialization parameter is set to an invalid valueC
only the LARGE_POOL_SIZE initialization parameter is set to an invalid valueD
both the LARGE_POOL_SIZE and INSTANCE_TYPE initialization parameters are set to invalid values
考题
单选题You have the following requirements in relation to the detection of block corruption for your database instance： Check for logical self-consistency of data blocks when modified in memory. Checksums are calculated before and after the block change. Checks are performed for the lost writes to the physical standby database. Which method would help you perform the above checks automatically？（）A
Set the DB_SECUREFILE parameter to PERMITTEDB
Set the DB_ULTRA_SAFE parameter to DATA_ONLYC
Set the DB_LOCK_CHECKSUM parameter to TYPICALD
Set the DB_LOST_WRITE_PROTECT parameter to TYPICAL
考题
单选题Which of the following statements is true regarding the initialization parameter DIAGNOSTIC_DEST？（） The default value is the value of the environment variable $ORACLE_HOME； if $ORACLE_HOME isn’t setA
then the default is set to $ORACLE_BASE The default value is the value of the environment variable $ORACLE_BASE； if $ORACLE_BASE isn’t set，B
then it is set to $ORACLE_HOMEC
DIAGNOSTIC_DEST is always equal to $ORACLE_HOMED
DIAGNOSTIC_DEST is always equal to $ORACLE_BASE
考题
单选题You have created a password file using the following command： ORAPWD file=d：/oracle/ora9i/orapwU01 password=change_on_install entries=3 Which of the following is true about this password file？（）A
If the REMOTE_LOGIN_PASSWORDFILE parameter is set to SHARED in the initialization parameter file， then a maximum of three users can be granted the SYSDBA or SYSOPER privileges.B
If the REMOTE_LOGIN_PASSWORDFILE parameter is set to EXCLUSIVE in the initialization parameter file， then a maximum of three users can be granted the SYSDBA or SYSOPER privileges.C
If the REMOTE_LOGIN_PASSWORDFILE parameter is set to SHARED in the initialization parameter file， then the SYSDBA and SYSOPER privileges can be granted to other users as long as space in the password file isD
If the REMOTE_LOGIN_PASSWORDFILE parameter is set to EXCLUSIVE in the initialization parameter file， then the SYSDBAand SYSOPER privileges can be granted to other users as long as space in the password file is available.
考题
多选题The OPTIMIZER_USE_PLAN_BASELINES parameter is set to TRUE. The optimizer generates a plan for a SQL statement but does not find a matching plan in the SQL plan baseline. Which two operations are performed by the optimizer in this scenario?（）AThe optimizer adds the new plan to the plan history.BThe optimizer selects the new plan for the execution of the SQL statement.CThe optimizer adds the new plan to the SQL plan baseline as an accepted plan.DThe optimizer adds the new plan to the SQL plan baseline but not in the ENABLED state.EThe optimizer costs each of the accepted plans in the SQL plan baseline and picks the one with the lowest cost.
考题
单选题Within a resource-plan definition， what differentiates a top-level plan from a subplan？（）A
A subplan has the PLAN_SUB parameter value set to SUBB
A top-level plan has the GROUP_OR_PLAN parameter set to the name of the subplan in the resource-plan definitionC
There is no difference in the resource-plan definitionD
A subplan always has the CPU_MTH parameter value set to RATIOE
The string TOP_LEVEL is appended to the name of top-level resource plans
考题
单选题Automatic data conversion will occur if which of the following happens?（）A
The client and server have different NLS_LANGUAGE settings.B
The client and server character sets are not the same, and the database character set is not a strict superset of the client character set.C
The client and server are in different time zones.D
The client requests automatic data conversion.E
The AUTO_CONVERT initialization parameter is set to TRUE.
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