1z1-084퍼펙트인증덤프자료 & 1z1-084 Dump

Oracle인증 1z1-084시험은 빨리 패스해야 되는데 어디서부터 어떻게 시험준비를 시작해야 하는지 갈피를 잡을수 없는 분들은Itexamdump가 도와드립니다. Itexamdump의 Oracle인증 1z1-084덤프만 공부하면 시험패스에 자신이 생겨 불안한 상태에서 벗어날수 있습니다.덤프는 시장에서 가장 최신버전이기에 최신 시험문제의 모든 시험범위와 시험유형을 커버하여Oracle인증 1z1-084시험을 쉽게 패스하여 자격증을 취득하여 찬란한 미래에 더 가깝도록 도와드립니다.

Oracle 1Z0-084 (Oracle Database 19C 성능 및 튜닝 관리) 인증 시험은 Oracle Database 19C의 성능 튜닝 및 관리를 전문으로하는 사람들을위한 인증 시험입니다. 이 인증 시험은 Oracle Database 19C의 성능을 관리하고 조정하는 후보자의 지식과 기술을 테스트하도록 설계되었습니다. 이 시험은 성능 튜닝 방법론, 데이터베이스 아키텍처, SQL 튜닝, 메모리 관리 등을 포함한 광범위한 주제를 다룹니다.

Oracle 1Z0-084 시험은 Oracle Database 19C의 성능 조정 및 관리에 대한 전문 지식을 보여 주려는 데이터베이스 관리자, 엔지니어 및 건축가에게 이상적입니다. 시험 커리큘럼은 데이터베이스 매개 변수 튜닝, 메모리 사용 최적화, SQL 문을 최적화하고 성능 문제를 진단 및 해결하는 등 여러 측면을 다룹니다. 인증을 얻으려면 성과 최적화의 이론적 및 실제적인 측면 모두에 대한 철저한 지식이 필요합니다.

Oracle 1Z0-084 인증 시험은 응시자가 Oracle Database 19C Performance Management를 깊이 이해해야하는 고급 수준의 시험입니다. 응시자는 다양한 성능 튜닝 기술에 대한 경험이 있어야하며 성능을 모니터링하고 관리하는 데 사용되는 도구 및 유틸리티에 익숙해야합니다. 또한 성능 문제를 해결하고 최대의 효율성을 위해 데이터베이스를 최적화 할 수 있어야합니다.

>> 1z1-084퍼펙트 인증덤프자료 <<

최신 Oracle Database 19c 1z1-084 무료샘플문제 (Q50-Q55):

질문 # 50
Examine this code block, which executes successfully:
DBMS_SERVER_ALERT. SET_THRESHOLD (
DBMS_SERVER_ALERT.CPU_TIME_PER_CALL, DBMS_SERVER_ALERT. OPERATOR_GE, '8000', DBMS_SERVER_ALERT.OPERATOR_GE, '10000', 1, 2, 'inst1', DBMS_SERVER_ALERT.OBJECT_TYPE_SERVICE, 'main.regress.rdbms.dev.us.example.com') ;

What will happen?

A. A warning alert will be issued only when CPU time exceeds 10000 microseconds for each user call.
B. A critical alert will be issued when CPU time exceeds 2 minutes for each user call.
C. A warning alert will be issued when CPU time exceeds 1 minute for each user call.
D. A critical alert will be issued when CPU time exceeds 10000 microseconds for each user call.

정답：D

설명：
In the provided code block, the DBMS_SERVER_ALERT.SET_THRESHOLD procedure is used to set alert thresholds for the CPU time per call in Oracle Database. This procedure is a part of Oracle's Database Server Alert system, which monitors various metrics and generates alerts when certain thresholds are exceeded.
The parameters passed to the SET_THRESHOLD procedure are as follows:
* The first parameter DBMS_SERVER_ALERT.CPU_TIME_PER_CALL specifies the metric for which the threshold is being set, in this case, the CPU time consumed per database call.
* The second and third parameters DBMS_SERVER_ALERT.OPERATOR_GE and '8000' specify the warning threshold level and its value, respectively. However, these are not relevant to the answer as they are overridden by the critical threshold settings.
* The fourth and fifth parameters DBMS_SERVER_ALERT.OPERATOR_GE and '10000' set the critical threshold level and its value. This means that a critical alert will be generated when the CPU time per call exceeds 10000 microseconds.
* The remaining parameters specify the warning and critical alert intervals, the instance name, the object type, and the service name. These are not directly relevant to the behavior described in the options.
Thus, the correct answer is B, as the critical threshold for CPU time per call is set to 10000 microseconds, and the system is configured to issue a critical alert when this threshold is exceeded.
References:
* Oracle Database 19c documentation on the DBMS_SERVER_ALERT.SET_THRESHOLD procedure, which details the parameters and usage of this procedure for setting alert thresholds within Oracle Database monitoring system.
* Oracle Database Performance Tuning Guide, which provides best practices and methodologies for monitoring and tuning Oracle Database performance, including the use of server alerts and thresholds.

질문 # 51
This error occurred more than four hours ago in the database:
ORA-04036 PGA memory used by the instance exceeds PGA_AGGREGATE_LIMIT
You want to know which process and query were at fault.
Which two views should you use for this purpose?

A. DBA_HIST_ACTIVE_SESS_HISTORY
B. DBA_HIST_PGASTAT
C. DBA_HIST_SQLTEXT
D. DBA_HIST_SQLSTAT
E. DBA_HIST_PROCESS_MEM_SUMMARY

정답：A,E

설명：
To investigate the cause of the ORA-04036 error, which indicates that PGA memory usage exceeds the PGA_AGGREGATE_LIMIT, the appropriate views to consult are DBA_HIST_ACTIVE_SESS_HISTORY and DBA_HIST_PROCESS_MEM_SUMMARY.
* DBA_HIST_ACTIVE_SESS_HISTORY: This view provides historical information about active sessions in the database. It includes details about the SQL executed, the execution context, and the resources consumed by each session. By examining this view, you can identify the specific sessions and SQL queries that were active and potentially consuming excessive PGA memory around the time the ORA-04036 error occurred.
* DBA_HIST_PROCESS_MEM_SUMMARY: This view contains historical summaries of memory usage by processes. It can help in identifying the processes that were consuming a significant amount of PGA memory, leading to the ORA-04036 error. This view provides aggregated memory usage information over time, making it easier to pinpoint the processes responsible for high PGA memory consumption.
Together, these views offer a comprehensive overview of the memory usage patterns and specific queries or processes that might have contributed to exceeding the PGA_AGGREGATE_LIMIT, resulting in the ORA-
04036 error.
References:
* Oracle Database Reference: DBA_HIST_ACTIVE_SESS_HISTORY
* Oracle Database Reference: DBA_HIST_PROCESS_MEM_SUMMARY
* Oracle Database Performance Tuning Guide: Managing Memory

질문 # 52
Buffer cache access is too frequent when querying the SALES table. Examine this command which executes successfully:
ALTER TABLE SALES SHRINK SPACE;
For which access method does query performance on sales improve?

A. index range scan
B. db file sequential read
C. index full scan
D. db file scattered read

정답：B

설명：
The SHRINK SPACE operation compacts the table, which can reduce fragmentation and thus improve performance for sequential reads of the table. This operation could improve full table scans, which are typically associated with db file sequential read wait events.
References:
* Oracle Database Administrator's Guide, 19c

질문 # 53
You must configure and enable Database Smart Flash Cache for a database.
You configure these flash devices:

Examine these parameter settings:

What must be configured so that the database uses these devices for the Database Smart Flash Cache?

A. Set DB_FLASH_CACHE_SIZE to 256G and change device /dev/sdk to 128G.
B. Set DB_FLASH_CACHE_SIZE parameter to 128G, 64G.
C. Set DB_FLASH_CACHE_SIZE parameter to 192G.
D. Disable Automatic Memory Management and set SGA_TARGET to 256G.
E. Set DB_FLASH_CACHE_SIZE to 192G and MEMORY_TARGET to 256G.

정답：B

설명：
To configure and enable Database Smart Flash Cache, you must set the DB_FLASH_CACHE_SIZE parameter to reflect the combined size of the flash devices youintend to use for the cache. In this scenario, two flash devices are configured: /dev/sdj with 128G and /dev/sdk with 64G.
* Determine the combined size of the flash devices intended for the Database Smart Flash Cache. In this case, it's 128G + 64G = 192G.
* However, Oracle documentation suggests setting DB_FLASH_CACHE_SIZE to the exact sizes of the individual devices, separated by a comma when multiple devices are used.
* Modify the parameter in the database initialization file (init.ora or spfile.ora) or using an ALTER SYSTEM command. Here's the command for altering the system setting:
ALTER SYSTEM SET DB_FLASH_CACHE_SIZE='128G,64G' SCOPE=SPFILE;
* Since this is a static parameter, a database restart is required for the changes to take effect.
* Upon database startup, it will allocate the Database Smart Flash Cache using the provided sizes for the specified devices.
It is important to note that MEMORY_TARGET and MEMORY_MAX_TARGET parameters should be configured independently of DB_FLASH_CACHE_SIZE. They control the Oracle memory management for the SGA and PGA, and do not directly correlate with the flash cache configuration.
References
* Oracle Database 19c Documentation on Database Smart Flash Cache
* Oracle Support Articles and Community Discussions on DB_FLASH_CACHE_SIZE Configuration

질문 # 54
You need to collect and aggregate statistics for the ACCTG service and PAYROLL module, and execute:

Where do you find the output of this command?

A. By viewing V$SERVICE_STATS
B. In the current working directory
C. By viewing V$SERV_MOD_ACT_STATS
D. In $ORACLE_BASE/diag/rdbms/<db unique name>/<instance name>/trace

정답：C

설명：
When you enable statistics gathering for a specific service and module using DBMS_MONITOR.SERV_MOD_ACT_STAT_ENABLE, the output is aggregated and can be viewed using theV$SERV_MOD_ACT_STATSdynamic performance view. This view contains the cumulative statistics of database activity broken down by service and module, which is exactly what you collect when executing the provided command.
* B (Incorrect):While many types of trace files are located in the Diagnostic Destination directory (
$ORACLE_BASE/diag), the aggregated statistics for services and modules are not written to trace files but are instead viewable through dynamic performance views.
* C (Incorrect):TheV$SERVICE_STATSview provides service-level statistics but does not provide the
* combined service/module-level breakdown.
* D (Incorrect):The output of the PL/SQL block is not written to a file in the current working directory; it is stored in the data dictionary and accessible via dynamic performance views.
References:
* Oracle Database PL/SQL Packages and Types Reference:DBMS_MONITOR
* Oracle Database Reference:V$SERV_MOD_ACT_STATS

질문 # 55
......

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1z1-084퍼펙트인증덤프자료 & 1z1-084 Dump

최신 1z1-084퍼펙트 인증덤프자료 덤프데모문제 다운

최신 Oracle Database 19c 1z1-084 무료샘플문제 (Q50-Q55):

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