AWR in memory

Similar Questions

• AWR, ADDM, ASH

  Hi all

  11.2.0.1

  AIX 5L (quadcore, 16 gram) 6.1

  I'm still confused how to take full advantage of these monitoring tools.

  In fact our performance database is currently satisfactory, except occasionally some minutes of CPU spikes high > 80.

  I just want to catch the culprit process/program responsible for this tension, as I have no I idea of who he is.

  Is it wise to run ASH, AWR, ADDM with a time entry 01:00 to 01:00 the next day?

  I mean, I will analyze a 1 day period, so that I can catch the program/process with the cpu/memory more for day use.

  Is this possible?

  Thank you very much

  zxy

  yxes2013 wrote:

  THA app works well with this thing of UPDATES. Once in a 'blue moon' PPE would not account for this.  I suspect that this could be explained by hardware bugs?

  Do you have any evidence to believe that the problem is a hardware bug?  Of course, it is possible for the material to go wrong.  But the absence of evidence, a hardware failure is radically less likely that an application coding problem.

  Justin

• Locking in AWR errors

  Hello
  
  yesterday a fix has been applied in 11.2.0.2 If Oracle Support for a bug, we faced. But today we faced a massive performance problem in the database about lock contention. Compared to AWR my during the previous day, logical reads also rose 5 times if the load was the same. Kindly help.
  

   DB Name     DB Id     Instance     Inst num     Startup Time     Release     RAC
  ORS     706933460     ORS     1     25-Sep-12 18:09     11.2.0.2.0     NO
  Host Name     Platform     CPUs     Cores     Sockets     Memory (GB)
  orsfo     AIX-Based Systems (64-bit)      12      12            69.50
  Snap Id     Snap Time     Sessions     Cursors/Session
  Begin Snap:     32939     26-Sep-12 15:15:19     2672      6.5
  End Snap:     32940     26-Sep-12 15:30:28     2650      6.7
  Elapsed:            15.15 (mins)            
  DB Time:            4,589.98 (mins)            
  Report Summary
  Cache Sizes
  
  Begin     End          
  Buffer Cache:      10,240M      10,240M     Std Block Size:      8K
  Shared Pool Size:      4,096M      4,096M     Log Buffer:      44,624K
  Load Profile
  
  Per Second     Per Transaction     Per Exec     Per Call
  DB Time(s):      303.1      0.5      0.08      0.14
  DB CPU(s):      11.8      0.0      0.00      0.01
  Redo size:      302,576.0      538.2            
  Logical reads:      1,840,179.4      3,273.2            
  Block changes:      2,405.5      4.3            
  Physical reads:      253.7      0.5            
  Physical writes:      742.9      1.3            
  User calls:      2,200.3      3.9            
  Parses:      770.1      1.4            
  Hard parses:      19.6      0.0            
  W/A MB processed:      9.7      0.0            
  Logons:      1.9      0.0            
  Executes:      3,841.7      6.8            
  Rollbacks:      508.3      0.9            
  Transactions:      562.2                  
  Instance Efficiency Percentages (Target 100%)
  
  Buffer Nowait %:      100.00     Redo NoWait %:      99.99
  Buffer Hit %:      99.99     In-memory Sort %:      100.00
  Library Hit %:      98.63     Soft Parse %:      97.46
  Execute to Parse %:      79.96     Latch Hit %:      99.71
  Parse CPU to Parse Elapsd %:      3.33     % Non-Parse CPU:      98.51
  Shared Pool Statistics
  
  Begin     End
  Memory Usage %:      92.94      92.88
  % SQL with executions>1:      85.15      83.17
  % Memory for SQL w/exec>1:      79.07      75.70
  Top 5 Timed Foreground Events
  
  Event Waits               Time(s)           Avg wait (ms) % DB time      Wait Class
  latch: cache buffers chains     357,012          112,342      315      40.79      Concurrency
  SQL*Net message from dblink     2,900,096     14,069      5      5.11      Network
  DB CPU                      10,722                  3.89      
  latch free                12,947           3,072      237      1.12      Other
  SQL*Net more data from dblink     382,236           1,017      3      0.37      Network 

  Kind regards
  Karan

  853100 wrote:

  When I check my "ordered by gets Section SQL ', all queries on my table increases by a factor of 10 (for example 18 k gets by performance yesterday become 140 k gets by performance today). Coupled with the fact that a key on the table query has executed only 500 times yesterday and 10000 times today. This query is executed every time a response is required from the front.

  Thus, the number of executions has increased by a factor of 20 and the number of receives a performance has increased by a factor of 8 - what anomaly will give you the best reduction of workload, if you can stop what is happening? Conversely - Gets an increase COULD be due to a change in the execution plan, in order to check plan yesterday today against (I use script $ORACLE_HOME/rdbms/admin/awrsqrpt); If not, is there an UPDATE (delete or insert) on the table which is now also past 20 times more often, if so, gets the increase COULD be gets against the rollback segment as a session does more work for generating consistent images in reading, in order to check the activity of the forum stats on "undo records applied.

  >

  PS: Restorations per second were similar compared to these two days. Applied patch was also 10093383.

  Look at the stat "rollback changes - undo records applied" to see if cancellations are "real" or whether a restore 'no' non-essential radiation of the intermediate layer.

  Concerning
  Jonathan Lewis
  http://jonathanlewis.WordPress.com
  Author: core Oracle

  P.S. It might have been helpful see a few examples of the query that runs 20 times as often.

• Section of the AWR report

  Hi all
  
  
  Please explain after section of the awr in details report
  Top 5 timed events in foreground
  
  Event waits Time (s) waiting (ms) % DB class average response time wait
  DB CPU 26 453 61.14
  DB file sequential read 5 066 221 1 6 084 14.06 user I/O
  ENQ: TX - line 71 1 542 21725 3.56 Application lock conflict
  db file scattered read 279 112 1 148 4 2.65 user IO
  Log file sync 394 955 1 109 3 2.56 commit
  Host CPU (processors: 2 hearts: 2: 2)
  
  Average load Begin load average end user % WIO %System% Idle
  0.05 0.37 7.0 4.1 3.7 88.9
  Instance of CPU
  
  % Total % CPU busy % DB time CPU waiting for CPU (Resource Manager)
  11.1 99.7 0.0
  Memory statistics
  
  Begin End
  Host Mem (MB): 12,281.8 12 281,8
  Use of LMS (MB): 2,048.0 2 048,0
  Use of PGA (Mo): 177.1 321,9
  Host % Mem used for SGA + PGA: 18,12 18.12

  Hi Arun,

  I don't think that this figure is very useful - is not to tell you what SQL (user or recursive, what happens the 22 percent of the time, etc.).

  So far, you seem to forward the wrong way. You are looking for in your CWA to find a problem. It's like a medical doctor looking at test results to see if a patient has a headache. You ask the patient on the headache and then you look in its test of possible clues as to what is the cause.

  Same thing with AWR. Ask your users what's troubling them. So look AWR and try to see explanations for it.

  Best regards
  Nikolai

• Sixth AWR report

  My AWR report showing this.
  
  Instance efficiency percentage (target 100%)
  
  % Buffer Nowait: remake of 99.99% of NoWait: 100.00
  Buffer % success: 99.96% sort in memory: 100.00
  Library % success: 99.99% soft Parse: 99,62
  Run parse %: latch 95.74 hit %: 96.03
  Analyze the CPU to analyze Elapsd %: 89,15% Non-Parse CPU: 97,93
  
  Please comment on it.
  
  Kind regards
  VN

  From there you can interpret your SGA is used correctly and run more happens that is soft analysis which is also a good sign.

• Cancel in memory

  I'm in the document provided by Craig-
  http://www.Oracle.com/education/america_eblasts/FY09/Q1/craig_shallahamer_all_about_oracle_s_in_memory_undo.PDF
  
  and I have the following queries-
  
  1. I can tell of this document that the IMU reduced significantly different types of overhead costs. What I can't say is what the cost is to achieve? If it is in memory, it uses memory. How much memory is consumed for a database by using this feature? Are there other 'costs' associated with it? Resources? Stability? Complexity??
  
  2. the cancellation in memoryis TRUE. What is your recommendation? Always use? Never use? Always use on OLTP? Never use on BI?
  
  Thank you!

  I'm not an expert, but still, just a few thoughts,.

  How much memory is consumed for a database by using this feature? Are there other 'costs' associated with it? Resources? Stability? Complexity??

  IMU is maintained by the pools to cancel it. If I remember correctly, the IMU pools are maintained by an undocumented parameter and is stored in the shared pool. The 'cost' so that if you plan to upgrade to 10g (it's one of 10g featured), it would take an additional memory that you allocate to the pool shared from your previous version. According to oracle, the additional memory overhead would be about 30 to 35%, which must be added. In addition, it is not always that oracle would use IMU. If the pools are filled, the traditional mechanism to cancel (and thus restore since its also kept in the shared pool as redo private) is used. In addition, to use a lock lock IMU is used and too much use that can show you an IMU lock contention in your statspack/awr report. This, if you want to talk, can be attributed as a cool resource overhead for using this feature. I'm not sure that it can be called complex because you're supposed to not 'play' with thisfeature, sound here and his work, that's all! I have not met many people who knew even before I tell them that this feature still exists! So, if you do not break what is already working, I guess that things would be fine.

  The default value for memoryundo is TRUE. What is your recommendation? Always use? Never use? Always use on OLTP? Never use on BI?

  Even what I said just above, this is a feature that is there and is working out-of-the-box. Its designed to work and work. For a BI/DSS environment, I guess that's not a lot of use (no use would also be reason to say since there was almost no DML) and for OLTP, heavily used. As I said, I'm not an expert so wait for gurus like Daniel, Jonathan, Billy, Charles, Hemant (the list is too long) to submit their comments thereon.

  HTH
  Aman...

• AWR with errors report

  Hello
  
  My AWR report generating warnings with ORA-errors. Many statistics are missing because of this.
  The database is running and health. Surprisingly the same happening with another instance too. Both are instances of the 11 g and OS is RHEL.
  
  WARNING (-20023) ORA-20023: Lack of start and end values for the time model stat: analysis time elapsed WARNING (-20023) ORA-20023: lack of beginning and ending values for the time model stat: DB CPU WARNING (-20016) ORA-20016: missing value for SGASTAT: free memory warning (-20016) ORA-20016: missing value for SGASTAT : free memory warning (-20009) ORA-20009: lack of statistical system logons current WARNING (-20009) ORA-20009: lack of statistical system logons current WARNING (-20009) ORA-20009: lack of statistical system opened cursors current WARNING (-20009) ORA-20009: lack of statistical system opened cursors current WARNING (-20023) ORA-20023: lack of values of start and end for stat model time : execute sql passed WARNING (-20008) ORA-20008: Missing Init.ora parameter undo_management WARNING (-20008) ORA-20008: Missing Init.ora parameter db_block_size WARNING (-20016) ORA-20016: missing value for SGASTAT: log_buffer WARNING (-20023) ORA-20023: lack of beginning and ending values for the time model stat: DB time caveat (-20008) ORA-20008: Missing Init.ora parameter timed_statistics WARNING (-20008) ORA-20008 : Missing Init.ora parameter timed_statistics WARNING (-20008) ORA-20008: Missing Init.ora parameter statistics_level WARNING (-20008) ORA-20008: Missing Init.ora parameter statistics_level WARNING (-20008) ORA-20008: Missing Init.ora parameter sga_target WARNING (-20008) ORA-20008: Missing Init.ora parameter pga_aggregate_target WARNING (-20023) ORA-20023: lack of beginning and ending values for the time model stat: time cpu WARNING (-20023) ORA-20023 background : lack of beginning and ending values for the time model stat: time up WARNING (-20023) ORA-20023 background: lack of beginning and ending values for the time model stat: login elapsed time of appeal WARNING (-20016) ORA-20016 management: missing value for SGASTAT: buffer_cache WARNING (-20016) ORA-20016: missing value for SGASTAT: buffer_cache WARNING : as DB time is less than a second, he had minimal activity of foreground in period snapshot. Some of the percentage values are not valid.
  
  Any idea?
  
  Thank you.

  Jin

  Looking at this thread lacks statistics AWR report

  The OP of the thread said

  I created SR with Oracle regrading this issue. I was asked to set "control_management_pack_access=DIAGNOSTIC+TUNING". Two days later (I don't know why) I was able to get the report without any error. Don't know what made it worked. Still not sure why do we need to set control_management_pack_access=DIAGNOSTIC+TUNING. All I want is AWR. I thought setting the parameter to DIAGNOSTIC should be enough.
  

  If the value control_management_pack_access = DIAGNOSTIC + TUNING

  Thank you
  Baskar.l

• ASH versus reports AWR report

  My DB is oracle10g.
  
  In enterprise manager, we can generate the report of ASH. Also, we can generate AWR report in the server through files awrrpt.sql.
  
  ASH report provides the information below.
  
  Main events
  Load profile
  Top of page SQL
  Albums of PL/SQL
  Top of page sessions
  Top of page objects/files/locks
  Activity over time
  
  Provide information below AWR reports.
  
  Summary of the report
  Wait events statistics
  SQL Statistics
  Statistics from the instance activity
  IO statistics
  Buffer Pool statistics
  Advisory statistics
  Wait statistics
  Cancel statistics
  Latch statistics
  Segment statistics
  Cache dictionary statistics
  Library Cache statistics
  Memory statistics
  Flow statistics
  Statistics on resources limit
  init.ora parameters
  
  
  My question is, under what circumstances, report of ASH can be seen and what circumstances AWR report is good to see? Any help is appreciated. Thank you

  in what circumstances, report of ASH can be seen and what circumstances AWR report is good to see? Any help is appreciated. Thank you

  Ash can help you when there is felt a sudden degradation in performance of the database.
  AWR - past historical snapshot intervals.

  AWR, stores the performance statistics of session for analysis later.
  ASH - storage is not persistent and with time, the older entries are removed to accommodate the new. They can be viewed using V$ ACTIVE_SESSION_HISTORY

  HTH
  -André

• I have an IMAC of 2008 with 2 GB of memory plus 300 GB of storage. If I buy 2GB of memory I'll be able to download Sierra?

  I have an IMAC of 2008 with 2 GB of memory plus 300 GB of storage. If I buy 2GB of memory I'll be able to download Sierra?

  Mike,

  No, macOS Sierra is not compatible with your hardware.

  Here is an analytical compatibility.

  

• iPhone SE sync - memory almost full

  When I sync my SE I see that my phone memory is almost full. Most of the memory is used by Documents and data. What is this and how can I reduce it?

  "Documents & data" so often in large part album art associated with music on your iPhone.

  Another way to measure the use of storage of your iPhone is on the iPhone: settings > general > storage & use iCloud > manage storage (in storage).  Remove some of the elements of y.

• MacBook pro mail on El Capitan running slow? I have a lot of memory and storage.

  Slow mail. 9.3: if I remove large attachments in emails that will make e-mail faster turnaround? I have around 100 emails in email with attachments to file 15 MB image on average software.

  Thank you very much for your help!

  OS X El Capitan

  10.11.6 version

  MacBookPro 13 inch 2011

  Processor Intel Core i7 2.7GHz

  16GB 1333 MHz DDR3 memory

  Mackintosh of HD boot drive

  Intel HD Graphics 3000 512 MB graphics

  Mail Version 9.3 (3124)

  

  Try to run this program in your usual account, then copy and paste the result in a response. The program was created by Etresoft, a regular contributor.  Use please copy and paste the screenshots can be difficult to read. On the screen with the Options, please open Options and tick the boxes in the bottom 2 before the race. Click on the button "Report share" in the toolbar, select "Copy to Clipboard" and then paste into a response. This will show what is running on your computer. No personal information is shown.

  Etrecheck - Information System

• Blue screen and bad RAM memory?

  My MBP 2011 early all just stopped working yesterday, it worked very well without any problem of performance for the last 5 years, and then suddenly a blue screen (of death) and it has problems starting.

  He will ring the Bell to start, display the bar loading and Apple, and then there will be a glitch on the big screen (horizontally) 1 inch above the Apple, after that, the fans speed up and all that I see a gray screen, not user interface.

  I zapped the PRAM/MSC and tried the unique memory sticks, I have no spare RAM on hand, but who will order soon.

  Tips to solve this problem?

  AHT says this - 65/4MEM/4000000000: 0x84f6f918

  Google says it is bad memory

  Here is the BSoD:

  

  I think you have a problem of memory, although if your MacBook Pro 15 or 17 inch, you should consider video issue as well now.

  http://www.Apple.com/support/MacBookPro-videoissues/

• last possible system on Mac Mini 1.93 GHz Intel Core 2 GB memory

  last possible system on Mac Mini 1.93 GHz Intel Core 2 GB memory?

  My system works very well except for Safari and Firefox, which NOW have updated versions.  What is the solution? I use Snow Leopard and latest Firefox since it's 48.0.2 and Safari's 5.1.10 that I can no longer use to access certain web pages

  The official list of Mac compatible with macOS Sierra:

  What are the requirements for Sierra.

  Towards the end of 2009 or later

  • MacBook
  • iMac

  
  

  2010 or later

  • MacBook Air
  • MacBook Pro
  • Mini Mac
  • Mac Pro

  If you do not meet the above, but respect what follows, then you can upgrade to El Capitan.

  Upgrade to El Capitan

  You can pass the Lion El Capitan or directly from Snow Leopard. El Capitan can be downloaded for FREE from the Mac App Store.

  To upgrade to El Capitan, you must have Snow Leopard 10.6.8 or installed Lion. Download El Capitan from the App Store. Sign in with your Apple ID. El Capitan is free. The file is big enough, more than 5 GB, allow it some time to download. It would be preferable to use Ethernet because it is nearly four times faster than wireless.

  Mac that can be upgraded to OS X El Capitan

  1 iMac (mid-2007 or newer) - model identifier 7.1 or later

  2 MacBook (late 2008 or early 2009 or newer aluminium) - model identifier 5.1 or later

  3. MacBook Pro (Mid/Late 2007 or newer)- model identifier 3.1 or later version

  4 MacBook Air (late 2008 or newer)- model identifier 2.1 or later

  5 mac mini (early 2009 or newer)- model identifier 3.1 or later version

  6 mac Pro (Early 2008 or newer)- model identifier 3.1 or later version

  7 Xserve (early 2009) - model identifier 3.1 or later version

  To find the identifier of the model open system information in the Utilities folder. It is displayed in the Panel on the right.

  Are my applications?

  See table of application - RoaringApps compatibility

  Upgrade to Lion

  If your computer does not meet requirements to install the above, it can still meet the specifications to install Lion.

  You can buy Lion to the Apple store. The cost is $19.99 (as it was before) plus taxes.  It's a download. You will receive an email with a redemption code that you then use on the Mac App Store for download Lion. Save a copy of this installer to your download folder because Setup deletes itself at the end of the installation.

  Lion system requirements

  1 mac with an Intel Core 2 Duo, Core i3, Core i5, Core i7,

  or Xeon processor

  2. 2 GB of memory

  3 OS X 10.6.6 or later (10.6.8) recommended

  4. 7 GB of available space

  5. certain features require an Apple ID; conditions apply.

• Why must the Finder 10.12 more physical memory

  Hello

  I use the preview mode icons in the Finder feature to pre-select one or more images for later use in documents. The pre-selection spans more than 30-40 records, each a few images from 80 to 120. At the beginning just after the start of system-Finder takes about MB, 45-47. Working through records about 20 this is increased to a muscular 1.78 GB. Which is not a problem at the moment because I have 20 GB of available, but I was wondering why the Finder is the hungry.  And also, this increase in the number of forever with the number of records, I'm working through?

  The only way I can "free" memory to baseline is to force quit viewfinder, but there must be a more elegant method.

  Anyone know this method? Thanks in advance.

  Hans

  Finder, as the system and other applications, will use unused memory in the file cache. It uses more memory, but it does not use what is available and who otherwise would be wasted. If something else needs memory, cache memory is reduced. There is no need to keep 'liberation' memory. The system will take care of him for you (that's why all apps free memory are unnecessary placebos that actually reduce performance).

• "Your system is running out of Application memory"

  Hello

  Since last week I have been having a problem where my computer screen appears with a reading of the question 'your system has sold out of the memory of the application.' This happens around every 20-30 minutes to use my computer, where the issue is resolved by restarting my computer. However, this message appears when I have 1 or 2 applications open (including the permanent Finder application). At my computer without a doubt a lot of memory left and I installed only 5 additional applications: League of Legends, Microsoft Excel, Powerpoint, Word and Outlook. I used OS X El Capitan for the first half of the week and macOS Sierra for the second half, but the upgrade did not solve my problem.

  I run:

  MacBook Air (13 inch, mid 2013)

  1.3 GHz Intel Core i5 processor

  DDR3 4 GB 1600 MHz memory

  Start drive Macintosh HD

  Graphics Intel HD Graphics 5000 1536 MB

  Your system is running out of RAM, not disk space. 4 GB is the absolute minimum of RAM. Try to remove all unnecessary startup items (Preferences > users and groups > you > login items) with the key less (not simply uncheck the boxes - which hide just the app but it still works).

  You can also run activity monitor (Applications > utilities) to see what is using the memory.