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Oracle 1Z0-054 Exam Overview:
| Certification Vendor: | Oracle |
|---|---|
| Exam Name: | Oracle Database 11g: Performance Tuning |
| Exam Number: | 1Z0-054 |
| Real Exam Qty: | 70-80 |
| Related Certifications: | Oracle Database 11g Administrator Certified Professional Oracle Database 11g Certified Implementation Specialist |
| Exam Price: | $245 USD |
| Exam Format: | Multiple Answer, Multiple Choice |
| Certificate Validity Period: | No expiration (legacy perpetual certification) |
| Passing Score: | 66% |
| Available Languages: | Japanese, English |
| Exam Duration: | 120 minutes |
| Recommended Training: | Oracle Database 11g: Performance Tuning Training |
| Exam Registration: | Pearson VUE Registration Oracle University Exam Page |
| Sample Questions: |  |
| Exam Way: | In-person at Pearson VUE test centers; online proctored option not available |
| Pre Condition: | Recommended: Oracle Database 11g Administrator Certified Professional or equivalent hands-on experience |
| Official Syllabus URL: | https://education.oracle.com/oracle-database-11g-performance-tuning/pexam_1Z0-054 |
Oracle 1Z0-054 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: I/O & Space Tuning | 15% | - I/O architecture and tuning - Segment and tablespace tuning - Using Statspack for performance analysis |
| Topic 2: SQL Tuning & Optimization | 25% | - SQL Tuning Advisor and Access Advisor - Identifying problematic SQL statements - Optimizer statistics and execution plans - SQL Performance Analyzer and Database Replay |
| Topic 3: Memory & Instance Tuning | 20% | - SGA and PGA configuration - Automatic Memory Management (AMM) - Tuning Shared Pool, Buffer Cache, and PGA |
| Topic 4: Performance Architecture & Diagnostics | 20% | - Time model and wait events analysis - Oracle Database performance architecture - ADDM and automatic diagnostic framework - Using Alert Log and trace files |
| Topic 5: Monitoring & Baselines | 20% | - ASH and performance views - Automatic Workload Repository (AWR) - Enterprise Manager monitoring - Creating and managing baselines |
Answers Every 1Z0-054 Candidate Should Read First
The Oracle Database 11g: Performance Tuning exam is the official Oracle test registered under exam code 1Z0-054. Passing it earns you the Oracle Database 11g Performance Tuning Certified Expert certification, a credential at the Expert level. It is also linked to the related certifications: Oracle Database 11g Administrator Certified Professional, Oracle Database 11g Certified Implementation Specialist. Oracle exams are valued because they test job-ready skills, so a passing score here carries real weight on a resume.
The Oracle Database 11g: Performance Tuning exam includes 70-80 questions to be completed within 120 minutes. Do the pacing math before exam day: with that many items on the clock, you need a steady rhythm and the discipline to flag a hard question and move on instead of stalling. Two or three full timed sessions with the ActualCollection test engine will show you exactly what that pace feels like, so time pressure stops being a factor on the real day.
To pass the Oracle Database 11g: Performance Tuning exam you need 66%, and the official registration fee is $245 USD. A retake is not discounted: a failed attempt means paying the full $245 USD again, so treat your first sitting as the expensive one. A sensible rule is to book your seat only after you are scoring comfortably above the passing mark on the ActualCollection practice tests, not just squeaking past it once.
Recommended: Oracle Database 11g Administrator Certified Professional or equivalent hands-on experience
Eligibility rules do change from time to time, so confirm the current requirements before you register on the official exam page.
Registration for the Oracle Database 11g: Performance Tuning exam goes through the official channels below.
As for the delivery format, the exam is taken In-person at Pearson VUE test centers; online proctored option not available.
Oracle points candidates toward the following training options for Oracle Database 11g: Performance Tuning.
Course work builds the foundation; question practice makes it stick. The 192 practice questions in the ActualCollection 1Z0-054 package let you rehearse each topic under exam-style pressure before the real thing.
Yes. ActualCollection offers a free PDF demo of the Oracle Database 11g: Performance Tuning material so you can judge the question quality and format before spending anything. After purchase, your license includes 365 days of free updates, and if you want to keep receiving updates after that period, renewals are available at a 50% discount.
If you take the Oracle Database 11g: Performance Tuning exam within 60 days of your purchase and do not pass, ActualCollection backs you with a 100% money-back guarantee. The claim must match the exam your product covers: attempts taken within 3 days of purchase are not eligible (that is too little preparation time), and neither are downloaded-but-unused products, free materials, or expired orders. The candidate name must match the payer name, and you need to submit a scanned enrollment slip plus the official Score Report PDF within 2 days of the exam; claims are processed within 7 days. Prefer not to refund? You can swap instead and receive two other exam products of equal value for free while keeping the update service on your original purchase.
Delivery itself is instant: your files are downloadable right away and emailed to you within one minute of payment. If nothing arrives within 2 hours, contact customer service. There is no limit on how many computers you may install the software on.
The official Oracle Database 11g: Performance Tuning syllabus is organized into 5 domains. Key areas include Memory & Instance Tuning (20%), I/O & Space Tuning (15%), and SQL Tuning & Optimization (25%). The complete, up-to-date topic list appears in the exam topics section above; work through it line by line and flag anything you cannot yet explain in your own words.
Oracle Database 11g: Performance Tuning Sample Questions:
You work on an online transaction processing (OLTP) database in which the SALES table has
10,000 rows but only four distinct products are sold.
View the Exhibit named HIST to check the distribution of values in the table and the histograms on
the table.
You check the plan table and notice that both the queries that executed on the SALES table used index range scan. The second query retrieved most of the rows in the table but used index range scan.
Why would the second query use the same plan?
- A. because the plan wasbind aware
- B. because the OPEN_CURSORS parameter is set to a very low value
- C. because the bind peeking never happened
- D. because the optimizer did not consider selectivity due to the use of bind variables
View the Exhibit and examine the statistics of a SQL statement.Which two conclusions can you draw from the statistics? (Choose two.)
- A. The SQL statement has high CPU usage.
- B. The SQL statement has high logical I/O.
- C. The SQL statement has high physical I/O.
- D. The SQL statement has long sort operations.
During a proactive database performance monitoring routine, on examining the AWR report you find that log file sync appears among the top 5 wait events.What does this event indicate?
- A. Redo is generated faster than LGWR can write it out.
- B. Frequent incremental checkpoints are taking place in the database.
- C. Frequent logfile switches are occurring.
- D. Frequent commits or rollbacks are taking place in the application.
Examine the initialization parameter values for the instance given below: NAME TYPE VALUE
optimizer_capture_sql_plan_baselines boolean FALSE optimizer_dynamic_sampling integer 2 optimizer_features_enable string 11.1.0.6 optimizer_index_caching integer 0 optimizer_index_cost_adj integer 100 optimizer_mode string ALL_ROWS db_file_multiblock_read_count integer 64
You notice that the one of the queries is using a full table scan (view Exhibit1) instead of index unique scan (view Exhibit2). The index is present on the column that is accessed in the WHERE clause of the query. The cost for a full table scan is more than that for an index unique scan.
Why would the optimizer choose full table scan over index unique scan? (Choose all that apply.)
- A. The DB_FILE_MULTIBLOCK_READ_COUNT initialization parameter is set to a low value.
- B. The statistics for the table and all the indexes associated with the table are not current.
- C. The OPTIMIZER_INDEX_COST_ADJ initialization parameter is set to a low value.
- D. The OPTIMIZER_INDEX_COST_ADJ initialization parameter is set to a high value.
You are working on a database that was upgraded to Oracle Database 11g from Oracle Database 9i. An ADDM finding in this database says that the shared pool is inadequately sized, as shown in the Exhibit.
You diagnosed that this is due to different kinds of workloads and this occurs only during peak hours. The following are the related parameter settings: SQL> show parameter sga name TYPE VALUE
lock_sga boolean FALSE pre_page_sga boolean FALSE sga_max_size big integer 300M sga_target big integer 0 SQL> show parameter target name TYPE VALUE
..... fast_start_mttr_target integer 0 memory_max_target big integer 0 memory_target big integer 0 pga_aggregate_target big integer 100M sga_target big integer 0 You want to balance the memory between the System Global Area (SGA) components within the SGA depending on the workloads. Which two options would solve this problem? (Choose two.)
- A. Set the PGA_AGGREGATE_TARGET parameter to 200M and the SGA_MAX_SIZE parameter to 400M.
- B. Set the MEMORY_MAX_TARGET and MEMORY_TARGET parameters to 400M.
- C. Set the SGA_TARGET parameter to 300M.
- D. Set the MEMORY_MAX_TARGET and MEMORY_TARGET parameters to 100M.
- E. Set the SGA_MAX_SIZE parameter to 400M.
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