Tanel Poder Consulting
Blog Tanel Poder. - Linux, Oracle, SQL performance tuning and troubleshooting - consulting & training..
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- Linux, Oracle, SQL performance tuning and troubleshooting - consulting & training.
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Hello all fellow Oracle geeks and technology enthusiasts! Long time no see ;-) In the hacking session about Oracle full table scans and direct path reads I explained how the direct path read decision ...
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SGA bigger than than the amount of HugePages configured (Linux – 11.2.0.3) | Tanel Poder Consulting
I just learned something new yesterday when demoing large page use on Linux during my AOT seminar. I had 512 x 2MB hugepages configured in Linux ( 1024 MB ). So I set the USE_LARGE_PAGES = TRUE (it ac...
Blog.tanelpoder.com news digest
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1 year
Report Current Oracle Session Wait Chains from GV$SESSION without ASH
You probably are already familiar with my ash_wait_chains scripts that use CONNECT BY for walking through the blocking_session fields in ASH and report “wait chains”, signatures of complex waits involving other database sessions.Since ASH is “just” a...
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1 year
Advanced Oracle Troubleshooting Guide, Part 13: OStackProf for Linux, Unix & Mac...
About 14 years ago I published the OstackProf script that ran on Windows sqlplus clients (the Oracle server could run on any platform that supported ORADEBUG SHORT_STACK).I don’t use Windows almost at all nowadays, so it’s about time to publish the same...
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1 year
Testing Oracle's Use of Optane Persistent Memory, Part 2 - Fast Log File Sync Wa...
Introduction Introduction History Fast Log File Sync Tracing Log Writer Debug Module Redo Metrics In the previous post about Oracle’s Use of Optane Persistent memory for fast commits, I wrote about microsecond-scale “I/O” done against Optane persistent...
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2 years
Testing Oracle's Use of Optane Persistent Memory for Low Latency Commits
Introduction Introduction My home lab Optane setup Testing Oracle commit latency OS-level view Oracle metrics New log writing behavior internals Summary There will be multiple posts in this series. In this post I will focus on Oracle’s use of Optane...
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| Updated: | November 17, 2021 |
| Expires: | August 03, 2027 |
| Created: | August 03, 2005 |
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