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1-8 of about 17 results (0.54 second)

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1. A  Wider View : BLOG HAS MOVED 'HERE...
http://shallahamer-orapub.blogspot.com/2010/
: BLOG HAS MOVED 'HERE' oracle Database performance tuning and analysis experimentation and ruminations. Tuesday, December 14, 2010 IO Read Wait...
  'here' from the web at 'http://filezone.orapub.com/Research/Average01.zip'  zip  Average010.030 MB  - 'here' Web

2. A  Wider View : BLOG HAS MOVED 'HERE...
http://shallahamer-orapub.blogspot.com/2011/
: BLOG HAS MOVED 'HERE' oracle Database performance tuning and analysis experimentation and ruminations. Friday, December 9, 2011 Singular CBC L...
  'doRbExpr.sql' from the web at 'http://filezone.orapub.com/Research/201111_IdxRtBlk/doRbExpr.sql'  sql  doRbExpr0.0084 MB  - 'doRbExpr.sql' Web
  'getIdxRtBlk.sql' from the web at 'http://filezone.orapub.com/Research/201111_IdxRtBlk/getIdxRtBlk.sql'  sql  getIdxRtBlk0.0019 MB  - 'getIdxRtBlk.sql' Web

3. A  Wider View : BLOG HAS MOVED 'HERE...
http://shallahamer-orapub.blogspot.com/2012/
: BLOG HAS MOVED 'HERE' oracle Database performance tuning and analysis experimentation and ruminations. Monday, November 12, 2012 Total Time an...
103 900A''Wider View : BLOG HAS MOVED 'HERE': 2012 A''Wider View : BLOG HAS MOVED 'HERE' Oracle Database performance tuning and analysis experimentation and ruminations. Monday, November 12, 2012 Total Time and Bits of Time This page has been permanently moved. Please CLICK HERE to be redirected. Thanks, Craig. Our Experience Tells Us So... We know from hard-fought experience that the more work we push through a system the more processing time involved. That's not rocket science... but to mathematically represent the relationship between work and time is rocket science. Decades ago Operations Research queuing theory researchers quantitatively established the relationship between work and time. They put into math what we all have experienced. In our DBA world this means that as the system activity increases, then so does CPU consumption and eventually Oracle non-idle wait time. Find The Big Bar The classic way to graphically represent alloracle event1oracle event
  'click here (3.6 MB)' from the web at 'http://filezone.orapub.com/Research/20120829_ParseTime/Exper_Pack1a.zip'  zip  Exper_Pack1a> 1 MB  - 'click here (3.6 MB)' Web
  'raw insert statements' from the web at 'http://filezone.orapub.com/Research/20120713_ParseTime/op_results.sql'  sql  op_results0.023 MB  - 'raw insert statements' Web
  'here' from the web at 'http://filezone.orapub.com/Research/201205b_rowVSset/setVSrow.sql'  sql  setVSrow0.0094 MB  - 'here' Web

4. A  Wider View : BLOG HAS MOVED 'HERE...
http://shallahamer-orapub.blogspot.com/2012/02/
: BLOG HAS MOVED 'HERE' oracle Database performance tuning and analysis experimentation and ruminations. Tuesday, February 28, 2012 Wan...
112A''Wider View : BLOG HAS MOVED 'HERE': February 2012 A''Wider View : BLOG HAS MOVED 'HERE' Oracle Database performance tuning and analysis experimentation and ruminations. Tuesday, February 28, 2012 Wanna Bet? Cool facts about the central limit theorem. This page has been permanently moved. Please CLICK HERE to be redirected. Thanks, Craig. Wanna Bet? Suppose there is a room of 75 Oracle DBAs. I randomly pick 25 of them and ask them to randomly divide up into 5 groups of 5 each. Then I ask each group to compute the average age for their group and give me the results. The averages are 38.2, 34.7, 41.2, 43.9, and 42.1. I do a little math but don't say anything. I then look to the remaining 50 DBAs, ask them to break up into 10 groups of 5 each, compute their group's average age, write their result on a piece of paper, and without showing me, place the paper face down on the table before me. Start the drum roll please... I take a deeporacle1oracle event2442ulation into sample sets and calculate the mean of each sample set, the distribution of the means will be normal. This normality characteristic allows us to make bold "plus or minus" statements... perhaps with a $100 bill involved. Can't wait until Collaborate/IOUG 2012 in Las Vegas! While this trick is pretty cool, in my view, the really cool part is it will work using years of Oracle experience, number of kids the DBA has, and size of the DBA's IT department. Or more boring figures like wait event times, SQL elapsed times, and SQL arrival rates. The fine print. The distribution being normal tells us that 90% of the samples are between plus or minus 1.645 times the standard deviation from the average. In my example, the average of the initial five sample sets is 40.0, the standard deviation is 3.6, so the "minus" 90% bound is 34.1, and the "plus" 90% bound is 46.0. But those aren't the bounds I used in the challenge! You may have noticed my "wanna bet" range was not 34.1 and 46.0 event1942oracle event
  'HERE' from the web at 'http://filezone.orapub.com/Research/20120216_CommitWrite/CW_AnalysisPack.zip'  zip  CW_AnalysisPack> 1 MB  - 'HERE' Web
  'dml1.sql' from the web at 'http://filezone.orapub.com/Research/20120216_CommitWrite/dml1.sql'  sql  dml10.00034 MB  - 'dml1.sql' Web
  'dml2.sql' from the web at 'http://filezone.orapub.com/Research/20120216_CommitWrite/dml2.sql'  sql  dml20.00033 MB  - 'dml2.sql' Web

5. A  Wider View : BLOG HAS MOVED 'HERE...
http://shallahamer-orapub.blogspot.com/2012/04/
: BLOG HAS MOVED 'HERE' oracle Database performance tuning and analysis experimentation and ruminations. Thursday, April 19, 2012 When are...
109 378A''Wider View : BLOG HAS MOVED 'HERE': April 2012 A''Wider View : BLOG HAS MOVED 'HERE' Oracle Database performance tuning and analysis experimentation and ruminations. Thursday, April 19, 2012 When are DBA_HIST_SYSSTAT values correct? This page has been permanently moved. Please CLICK HERE to be redirected. Thanks, Craig. Eventually you'll want to really know... When performance data is periodically collected (i.e., snapshotted) and stored, the question undoubtedly will cross our minds, "Is the stored value correct1_b@b_1the beginning or the ending snapshot time?" In relation to Oracle's AWR system and specifically the dba_hist_sysstat table, this is what this posting is all about. If you have ever written a data collection program or pulled data from either Statspack or AWR, you've had to figure this out.... or guessed and know you were kinda close. Let me demonstrate this problem. Let's say this is the data: Snap # Start Time End Toracle event1oracle event
  'looper.sql' from the web at 'http://filezone.orapub.com/Research/20120418_AWR_Values/looper.sql'  sql  looper0.0011 MB  - 'looper.sql' Web
  'here' from the web at 'http://filezone.orapub.com/Research/20120303_sesstat/sesstatChange.zip'  zip  sesstatChange0.1 MB  - 'here' Web

6. A  Wider View : BLOG HAS MOVED 'HERE...
http://shallahamer-orapub.blogspot.com/2013/
: BLOG HAS MOVED 'HERE' oracle Database performance tuning and analysis experimentation and ruminations. Tuesday, December 10, 2013 Tool Options...
103A''Wider View : BLOG HAS MOVED 'HERE': 2013 A''Wider View : BLOG HAS MOVED 'HERE' Oracle Database performance tuning and analysis experimentation and ruminations. Tuesday, December 10, 2013 Tool Options: Detailing Oracle Process CPU Consumption This page has been permanently moved. Please CLICK HERE to be redirected. Thanks, Craig. Detailing an Oracle Database process's CPU consumption is amazing, a lot of fun, and can lead to some “ah ha” moments. To make this posting daily digestible, I'm breaking it up into a multi-part series. Today I'm posting the second part entitle, Tools Options. Here we go… Tool Options As I mentioned in my previous post entitled, The Situation, there is bad news and there is good news. The bad news, to my knowledge, Oracle does not collect process CPU consumption1_b@b_1the Oracle kernel level. For sure, Oracle collects Oracle process CPU consumption, but it is the total CPU consumption, witoracle1oracle event8683of an Oracle's process's CPU consumption down to the Oracle kernel function. Perf-ect! (sorry about that) To help make this crystal clear, now I can get something like this: Count Kernel Function -------- --------------- 1500 abc124 900 td8tr 200 kcbte 12 kbce8 ------ 2612 counts over a 5 second interval There is a lot more to Perf than I have mentioned. There are actually suite of Perf tools, that all begin with the word "Perf". For example: perf stat is used to obtain, that is collect, the event counts. perf record is used to record the event counts for later reporting. perf report is used to break down and report on the events process, function, etc. perf top is like the standard "top" command but provides function level detail for a specific process. Here is a quick example of "perf stat" collecting the default events for process 28497 for five seconds. Notice the "sleep 5"? The execution duration of the command "sleep 5" is the collection period duration. I could have used anoevent8183oracle event
  'HERE' from the web at 'http://filezone.orapub.com/Research/20131008_12c_CPU_Times/cpu_sys_delta_expr.sql'  sql  cpu_sys_delta_e...0.0020 MB  - 'HERE' Web
  'HERE' from the web at 'http://filezone.orapub.com/Research/20131008_12c_CPU_Times/Analysis_Pack.zip'  zip  Analysis_Pack> 1 MB  - 'HERE' Web
  'HERE' from the web at 'http://filezone.orapub.com/Research/20130914_12c_CPU_Times/cpu_compare.sql'  sql  cpu_compare0.00074 MB  - 'HERE' Web
  'HERE' from the web at 'http://filezone.orapub.com/Research/20130821_11g_12c/RTComparison_Graphs_1h.xls'  xls  RTComparison_Gr...0.075 MB  - 'HERE' Web

7. A  Wider View : BLOG HAS MOVED 'HERE...
http://shallahamer-orapub.blogspot.com/2013/03/
: BLOG HAS MOVED 'HERE' oracle Database performance tuning and analysis experimentation and ruminations. Monday, March 25, 2013 Are SQL St...
109A''Wider View : BLOG HAS MOVED 'HERE': March 2013 A''Wider View : BLOG HAS MOVED 'HERE' Oracle Database performance tuning and analysis experimentation and ruminations. Monday, March 25, 2013 Are SQL Statement CPU Consumption Times Reliable? This page has been permanently moved. Please CLICK HERE to be redirected. Thanks, Craig. Q: Are SQL Statement CPU Consumption Times Reliable? During an Oracle Database performance analysis, it's usually important to collect the CPU consumption for specific SQL statements for opportunity and comparative analysis. Interestingly an Oracle Database provides multiple SQL CPU consumption data sources. I'm the type of person who asks, "Are they to be trusted? Is one method more accurate than the other?" This posting will compare four different sources of SQL CPU consumption: v$sess_time_model, v$sqlstats, v$sql (Statspack report), and the OS Linux command procstat. You download the analysis pack conoracle1oracle event1295er?" This posting will compare four different sources of SQL CPU consumption: v$sess_time_model, v$sqlstats, v$sql (Statspack report), and the OS Linux command procstat. You download the analysis pack containing all related scripts and data HERE. My Real Motivation (and fear) My initial motivation for this investigation occurred when a student of mine noticed something very strange in this below Statspack report (source: http://filebank.orapub.com/perf_stats/SP_PDXPROD.txt ) : Top 5 Timed Events Avg %Total ~~~~~~~~~~~~~~~~~~ wait Call Event Waits Time (s) (ms) Time ----------------------------------------- ------------ ----------- ------ ------ latch: cache buffers chains 53,712 31,764 591 49.8 CPU time 16,758 26.2 Backup: sbtwrite2 8,909 11,126 1249 17.4 latch free 3,198 1,851 579 2.9 latch: cache buffer handles 1,967 931 473 1.5 ------------------------------------------------------------- . . . SQL ordered by CPU DB/Inst: PDXPROD/PDXPROD Snaps: 2625-2635 . . . CPU CPU per Elapevent795oracle event
  'HERE' from the web at 'http://filezone.orapub.com/Research/20130421_true_cpu_time/analysis_pack.zip'  zip  analysis_pack0.5 MB  - 'HERE' Web
  'quick.sql' from the web at 'http://filezone.orapub.com/Research/20130421_true_cpu_time/quick.sql'  sql  quick0.0021 MB  - 'quick.sql' Web

8. A  Wider View : BLOG HAS MOVED 'HERE...
http://shallahamer-orapub.blogspot.com/2013/03/
: BLOG HAS MOVED 'HERE' oracle Database performance tuning and analysis experimentation and ruminations. Monday, March 25, 2013 Are SQL St...
109A''Wider View : BLOG HAS MOVED 'HERE': March 2013 A''Wider View : BLOG HAS MOVED 'HERE' Oracle Database performance tuning and analysis experimentation and ruminations. Monday, March 25, 2013 Are SQL Statement CPU Consumption Times Reliable? This page has been permanently moved. Please CLICK HERE to be redirected. Thanks, Craig. Q: Are SQL Statement CPU Consumption Times Reliable? During an Oracle Database performance analysis, it's usually important to collect the CPU consumption for specific SQL statements for opportunity and comparative analysis. Interestingly an Oracle Database provides multiple SQL CPU consumption data sources. I'm the type of person who asks, "Are they to be trusted? Is one method more accurate than the other?" This posting will compare four different sources of SQL CPU consumption: v$sess_time_model, v$sqlstats, v$sql (Statspack report), and the OS Linux command procstat. You download the analysis pack conoracle1oracle event1295er?" This posting will compare four different sources of SQL CPU consumption: v$sess_time_model, v$sqlstats, v$sql (Statspack report), and the OS Linux command procstat. You download the analysis pack containing all related scripts and data HERE. My Real Motivation (and fear) My initial motivation for this investigation occurred when a student of mine noticed something very strange in this below Statspack report (source: http://filebank.orapub.com/perf_stats/SP_PDXPROD.txt ) : Top 5 Timed Events Avg %Total ~~~~~~~~~~~~~~~~~~ wait Call Event Waits Time (s) (ms) Time ----------------------------------------- ------------ ----------- ------ ------ latch: cache buffers chains 53,712 31,764 591 49.8 CPU time 16,758 26.2 Backup: sbtwrite2 8,909 11,126 1249 17.4 latch free 3,198 1,851 579 2.9 latch: cache buffer handles 1,967 931 473 1.5 ------------------------------------------------------------- . . . SQL ordered by CPU DB/Inst: PDXPROD/PDXPROD Snaps: 2625-2635 . . . CPU CPU per Elapevent795oracle event
  'quick.sql' from the web at 'http://filezone.orapub.com/Research/20130421_true_cpu_time/quick.sql'  sql  quick0.0021 MB  - 'quick.sql' Web
Business Contacts is an Internet Search ..
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Business Contacts is an Internet Search ..    In recent times, and in fact for the last 10 - 15 years, the Internet has become an increasing huge source of valuable information. One thing to be found there is leads for sales of your...
1 Click-tuneup
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iMacsoft VOB to Apple TV Suite for Mac
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