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Tanel Poder Blog

 Généré le 29 Mars 2026 01:44

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Tanel Poder Blog

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- Linux, Oracle, SQL performance tuning and troubleshooting training & writing.

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title Tanel Poder Blog
description - Linux, Oracle, SQL performance tuning and troubleshooting training & writing.

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  • [H1] Tanel Poder Blog
  • [H2] Online & Video Training
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Home Interne Passing Juice
About Interne Passing Juice
Code Interne Passing Juice
Contact Interne Passing Juice
Topics Interne Passing Juice
Videos Interne Passing Juice
Consulting Interne Passing Juice
Training Interne Passing Juice
Practical Linux Performance & Troubleshooting Interne Passing Juice
Dimensional Analysis of System Performance with eBPF & xtop Interne Passing Juice
Efficient, Always-On Thread Level Observability with eBPF Externe Passing Juice
Testing the Datadog Explain Plan Visualizer with Oracle execution plans Interne Passing Juice
New scripts: vstat.sql & dstat.sql for showing Oracle Sysmetric history with 1-minute granularity Interne Passing Juice
xb.sql and xbi.sql - Explain Oracle Execution Plans Better! (Part 3 - Cardinality Misestimates) Interne Passing Juice
tabhisthybrid.sql: Display Oracle hybrid histograms and filter cardinality estimates Interne Passing Juice
pqr.sql: Generate QR Codes with Pure SQL in PostgreSQL Interne Passing Juice
The xCapture and xtop eBPF tools are now in beta, with a demo dataset Interne Passing Juice
CatVector Demo Website Interne Passing Juice
New Tool: xstack - Completely Passive eBPF Linux Stack Profiling Without Any Tracepoints Interne Passing Juice
Webinar: Testing High-Performance Vector Search With CatBench on Google AlloyDB Omni Interne Passing Juice
My Blog Has Turned 18 Years Old Interne Passing Juice
Catbench Vector Search App has Postgres Query Throughput and Latency Monitoring Now Interne Passing Juice
Using Postgres pg_test_fsync tool for testing low latency writes Interne Passing Juice
Find which Oracle SQL_ID hits the SQL*Net break/reset to client event Interne Passing Juice
New Tool: lsds - List All Linux Block Devices and Settings in One Place Interne Passing Juice
Optimizing eBPF I/O latency accounting when running 37M IOPS on a 384-CPU server Interne Passing Juice
xCapture v3: Linux Performance Analysis with Modern eBPF and DuckDB Interne Passing Juice
Core Function Words Translated between English, Spanish, German, French and Swedish Interne Passing Juice
When eBPF task->stack->pt_regs reads return garbage on the latest Linux kernels, blame Fred! Interne Passing Juice
TracepointArgs: List Any Linux Tracepoint with Their Arguments, Datatypes and Related Structs Interne Passing Juice
CatBench Vector Search Playground Interne Passing Juice
Embedding Vectors of the Same Image Rotated Over 360 Degrees Interne Passing Juice
SQL Plan Execution FlameGraphs with Loop and Row Counts Interne Passing Juice
Embedding Vectors vs. Vector Embeddings Interne Passing Juice
Video: Testing the Silk Platform in 2024 Interview (12 minutes) Interne Passing Juice
Testing the Silk Platform in 2024: Achieving 20 GiB/s I/O Throughput in a Single Cloud VM Interne Passing Juice
Visualizing and Comparing Embedding Vectors as Heatmaps (Videos) Interne Passing Juice
Visualizing and Comparing Embedding Vectors as Heatmaps Interne Passing Juice
Tracking, not Tracing, Linux Thread Activity for Complete System Visibility (eBPF Summit) Interne Passing Juice
Python Supports Profiling with Perf - How Does It Work? Interne Passing Juice
Can a User Process Consume Kernel Mode CPU Without a Syscall? Interne Passing Juice
Next Big Thing: X-Ray Vision for Linux Systems with eBPF Interne Passing Juice
Syscallargs: List All Linux System Calls With Their Arguments Interne Passing Juice
RTX4090 converted into an eGPU Interne Passing Juice
Oracle Hint Scopes and Join Level Cardinality Hint Interne Passing Juice
New Commenting System Interne Passing Juice
Oracle Shared Pool Internals: Allocated Chunk Status Indicators in Heap Dumps Interne Passing Juice
Oracle Index Parallel Degree Fix After Parallel Creation or Rebuild Interne Passing Juice
Report Current Oracle Session Wait Chains from GV$SESSION without ASH Interne Passing Juice
Advanced Oracle Troubleshooting Guide, Part 13: OStackProf for Linux, Unix & MacOSX Clients Interne Passing Juice
Testing Oracle's Use of Optane Persistent Memory, Part 2 - Fast Log File Sync Waits Interne Passing Juice
Testing Oracle's Use of Optane Persistent Memory, Part 1 - Low Latency Commits Interne Passing Juice
MySQL Now Shows its Thread Names at OS Level for Better Troubleshooting Interne Passing Juice
xb.sql and xbi.sql - Explain Oracle Execution Plans Better! (Part 2) Interne Passing Juice
My New Learning Platform and What I'm Up To in 2022 Interne Passing Juice
Achieving 10 GB/s Scanning Rate in a Single Cloud VM Interne Passing Juice
Testing The Silk Platform - Hands-On Technical Analysis of High-Performance I/O in the Cloud Interne Passing Juice
Virtual Conference: Troubleshooting Very Complex Oracle Performance Problems Interne Passing Juice
Do Not Use '>' in Your Command Prompt (and How to Stay Safe in Shell) Interne Passing Juice
Is Your Linux Version Hiding Interrupt CPU Usage From You? Interne Passing Juice
Video: High Performance Block I/O on Linux Interne Passing Juice
Achieving 11M IOPS & 66 GiB/s IO on a Single ThreadRipper Workstation Interne Passing Juice
Oracle Wait Event Name vs. Display Name Interne Passing Juice
Measuring Java JVM thread activity in Linux with task state sampling Interne Passing Juice
Reasons why SELECT * is bad for SQL performance Interne Passing Juice
High System Load with Low CPU Utilization on Linux? Interne Passing Juice
Hacking Session: 7 Levels of Hint Invalidity in Oracle SQL Interne Passing Juice
Hacking Session: Oracle SQL Monitoring - Understanding the Execution Timeline column and CPU usage Interne Passing Juice
Virtual Conference: Systematic Oracle SQL Optimization Interview Videos Interne Passing Juice
Oracle Fatal Background Processes Interne Passing Juice
Virtual Conference Update: Systematic Oracle SQL Optimization in 2020 Interne Passing Juice
Oracle Shared Pool Internals: List Chunk Position in the LRU List Interne Passing Juice
SchedLat: a Low Tech Script for Measuring Process CPU Scheduling Latency on Linux Interne Passing Juice
Announcing My Retirement (in 2030)! Interne Passing Juice
ORA-12850: Could not allocate slaves on all specified instances error and a workaround for my scripts Interne Passing Juice
Oracle Performance Troubleshooting Without OS Access, Part 1: Identifying CPU Scheduling Latency Interne Passing Juice
Video: Troubleshooting Complex Oracle Performance Problems (Jan 2020) Interne Passing Juice
Hacking Session: Troubleshooting Complex Oracle Performance Problems (January 2020) Interne Passing Juice
help.sql: Show TPT Script Purpose and Syntax Interne Passing Juice
Oracle State Objects and Reading System State Dumps Hacking Session Video Interne Passing Juice
New scripts: xb.sql and xbi.sql - Explain Oracle Execution Plans Better! (Part 1) Interne Passing Juice
Dump Current Oracle SQL Execution Plan Line ID Using Oradebug Interne Passing Juice
pSnapper: Linux Process Snapper Page and Videos Interne Passing Juice
Announcing Linux Process Snapper tool and a Linux Troubleshooting Hacking Session (3rd April 9am PDT) Interne Passing Juice
What Caused This Wait Event: Using Oracle's wait_event[] tracing Interne Passing Juice
Tutorial: Troubleshooting Linux SSH Login Delay - Why does logging in always take 10 seconds? Interne Passing Juice
Practical Linux Performance & Application Troubleshooting Training Details and Table of Contents Interne Passing Juice
Scripts for Drilling Down Into Unknown Optimizer Changes Interne Passing Juice
Visualizing SQL Plan Execution Time With FlameGraphs Interne Passing Juice
Generate Oracle SQL Monitoring Reports as HTML using SQL Developer v18.3 (no Flash needed) Interne Passing Juice
Log file switch (checkpoint incomplete) wait events and LGWR waiting for checkpoint progress Interne Passing Juice
Oracle SQL Monitoring and Advanced ASH Usage Hacking Sessions! Interne Passing Juice
Oracle SQL Tuning training & Oracle Troubleshooting training and some Linux stuff too! Interne Passing Juice
Webinar: Troubleshooting a Complex Oracle Performance Issue Interne Passing Juice
My Performance & Troubleshooting scripts (TPT) for Oracle are now in GitHub and open sourced Interne Passing Juice
Video: Oracle X$TRACE, Wait Event Internals and Background Process Communication Interne Passing Juice
Secret Hacking Session: Oracle Background Process Communication, Exotic Wait Events and Some Tracing too Interne Passing Juice
Advanced Oracle Troubleshooting seminar in 2018! Interne Passing Juice
Apache Impala Internals Deep Dive with Tanel Poder + Gluent New World Training Month Interne Passing Juice
GNW01: In-Memory Processing for Databases Interne Passing Juice
My BIWA Summit Presentations Interne Passing Juice
RAM is the new disk – and how to measure its performance – Part 3 – CPU Instructions & Cycles Interne Passing Juice
My New Youtube Channel Interne Passing Juice
Troubleshooting Another Complex Performance Issue – Oracle direct path inserts and SEG$ contention Interne Passing Juice
SQL Monitoring in Oracle Database 12c Interne Passing Juice
Advanced Oracle Troubleshooting v2.5 (with 12c stuff too) Interne Passing Juice
RAM is the new disk – and how to measure its performance – Part 2 – Tools Interne Passing Juice
RAM is the new disk – and how to measure its performance – Part 1 – Introduction Interne Passing Juice
The Hybrid World is Coming Interne Passing Juice
Old ventures and new adventures Interne Passing Juice
Advanced Oracle Troubleshooting Guide – Part 12: control file reads causing enq: SQ – contention waits? Interne Passing Juice
Sqlplus is my second home, part 8: Embedding multiple sqlplus arguments into one variable Interne Passing Juice
Oracle Exadata Performance: Latest Improvements and Less Known Features Interne Passing Juice
Oracle In-Memory Column Store Internals – Part 1 – Which SIMD extensions are getting used? Interne Passing Juice
About index range scans, disk re-reads and how your new car can go 600 miles per hour! Interne Passing Juice
Combining Bloom Filter Offloading and Storage Indexes on Exadata Interne Passing Juice
What the heck are the /dev/shm/JOXSHM_EXT_x files on Linux? Interne Passing Juice
Oracle Memory Troubleshooting, Part 4: Drilling down into PGA memory usage with V$PROCESS_MEMORY_DETAIL Interne Passing Juice
Slides of my previous presentations Interne Passing Juice
Where does the Exadata storage() predicate come from? Interne Passing Juice
Oracle X$ tables – Part 1 – Where do they get their data from? Interne Passing Juice
cell flash cache read hits vs. cell writes to flash cache statistics on Exadata Interne Passing Juice
Hard Drive Predictive Failures on Linux and Exadata Interne Passing Juice
When do Oracle Parallel Execution Slaves issue buffered physical reads – Part 2? Interne Passing Juice
When do Oracle Parallel Execution Slaves issue buffered physical reads – Part 1? Interne Passing Juice
Diagnosing buffer busy waits with the ash_wait_chains.sql script (v0.2) Interne Passing Juice
SGA bigger than the amount of HugePages configured (Linux – 11.2.0.3) Interne Passing Juice
Why doesn’t ALTER SYSTEM SET EVENTS set the events or tracing immediately? Interne Passing Juice
Advanced Oracle Troubleshooting Guide – Part 11: Complex Wait Chain Signature Analysis with ash_wait_chains.sql Interne Passing Juice
Oracle Performance & Troubleshooting Online Seminars in 2013 Interne Passing Juice
Scalar Subqueries in Oracle SQL WHERE clauses (and a little bit of Exadata stuff too) Interne Passing Juice
ShowMOS: How to get rid of the annoying “The Page has Expired” dialog in My Oracle Support Interne Passing Juice
Oracle 12c: Scalar Subquery Unnesting transformation Interne Passing Juice
Oracle Database 12c R1 (12.1.0.1.0) is finally released! Interne Passing Juice
Getting the Most Out of ASH online seminar Interne Passing Juice
Forcing Smart Scans on Exadata – is the _serial_direct_read parameter safe to use in production? Interne Passing Juice
Debugger Dangers – Part 2 Interne Passing Juice
List Exadata Storage Cell disk summary with cellpd.sql and cellpdx.sql scripts Interne Passing Juice
List Exadata Disk Layout and Topology with the exadisktopo scripts Interne Passing Juice
V$CELL_THREAD_HISTORY – “ASH” for Exadata Storage Cells Interne Passing Juice
Understanding what a hint affects using the V$SQL_FEATURE views Interne Passing Juice
Listing Exadata storage cells and their configuration info from V$CELL_CONFIG Interne Passing Juice
Alter session force parallel query doesn’t really force anything Interne Passing Juice
asqlmon.sql: SQL Monitoring-like execution plan line level drilldown into SQL response time Interne Passing Juice
ExaSnapper 0.7 beta download and the hacking session videos Interne Passing Juice
Peeking into Linux kernel-land using /proc filesystem for quick’n’dirty troubleshooting Interne Passing Juice
Even more Snapper – v4.03 now works in SQL Developer too! Interne Passing Juice
Manual “before” and “after” snapshot support in Snapper v4 Interne Passing Juice
Snapper v4.02 and the Snapper launch party video Interne Passing Juice
Drilling Deep Into Exadata Performance with ASH, SQL Monitoring and Exadata Snapper – slides and a hacking session! Interne Passing Juice
Troubleshooting high CPU usage with poor-man’s stack profiler – in a one-liner! Interne Passing Juice
Session Snapper v4 – The World’s Most Advanced Oracle Troubleshooting Script! Interne Passing Juice
Sqlplus is my second home: Part 7 – Downloading files via sqlplus :-) Interne Passing Juice
Japanese translation of some of my blog articles Interne Passing Juice
What the heck is the INTERNAL_FUNCTION in execution plan predicate section? Interne Passing Juice
A tip for lazy Oracle users – type less with ANSI DATE and TIMESTAMP SQL syntax Interne Passing Juice
Snapper v3.61 released – and more work is in progress! Interne Passing Juice
Select statement generating redo – and lost write detection Interne Passing Juice
Sqlplus is my second home: Part 6 – Colorizing sqlplus and terminal output Interne Passing Juice
Optimizer statistics-driven direct path read decision for full table scans (_direct_read_decision_statistics_driven) Interne Passing Juice
The limitations of CURSOR_SHARING = FORCE and FORCE_MATCHING_SIGNATURE for SQL plan stability Interne Passing Juice
MOATS-like sqlplus “top” utility for RAC Interne Passing Juice
Oradebug hanganalyze with a prelim connection and “ERROR: Can not perform hang analysis dump without a process state object and a session state object.” Interne Passing Juice
Advanced Oracle Troubleshooting Guide – Part 10: Index unique scan doing multiblock reads?! Interne Passing Juice
Where is LOB data stored? Interne Passing Juice
Exadata Smart Scan predicate offloading and sequence.NEXTVAL Interne Passing Juice
Create a database link with the new host:port/service syntax Interne Passing Juice
Oracle Core: Essential Internals for DBAs and Developers book by Jonathan Lewis Interne Passing Juice
Profiling trace files with preprocessor external tables in 11g and some parallel execution hacking Interne Passing Juice
Evil things are happening in Oracle Interne Passing Juice
What the heck is the SQL Execution ID – SQL_EXEC_ID? Interne Passing Juice
V8 Bundled Exec call – and Oracle Program Interface (OPI) calls Interne Passing Juice
Full scans, direct path reads and ORA-8103 error hacking session video Interne Passing Juice
Are you getting the most out of your Exadata performance? Part 1 Interne Passing Juice
What is the purpose of segment level checkpoint before DROP/TRUNCATE of a table? Interne Passing Juice
Another cache buffers chains latch contention troubleshooting example using LatchProf Interne Passing Juice
Tech Reviewer, Tech Reviewer! ;-) Interne Passing Juice
IOUG Select Journal Editor’s Choice Award 2011 Interne Passing Juice
Knowing what you want to achieve before thinking of how to achieve it – a query optimization example Interne Passing Juice
Running SELECT … INTO :bind_variable from SQL Interne Passing Juice
Latch contention troubleshooting case study and Flashback Database performance issues with LOBs Interne Passing Juice
MOATS: The Mother of All Tuning Scripts! Interne Passing Juice
An index of my TPT scripts Interne Passing Juice
LOBREAD SQL Trace entry in Oracle 11.2 (and tracing OPI calls with event 10051) Interne Passing Juice
Implicit datatype conversion in the parsing phase – something new I learned today! Interne Passing Juice
ORA-4031 errors, contention, cursor management issues and shared pool fragmentation – free secret seminar! Interne Passing Juice
Exadata CAN do smart scans on bitmap indexes Interne Passing Juice
Oracle Exadata Performance series – Part 1: Should I use Hugepages on Linux Database Nodes? Interne Passing Juice
Finding Oracle Homes which Oracle instances are using on Linux Interne Passing Juice
New cursor_bind_capture_destination parameter in Oracle 11.2.0.2 Interne Passing Juice
Performance Stories from Exadata Migrations Interne Passing Juice
Is this valid SQL syntax? :-) Interne Passing Juice
Snapper 3.52 – With Oracle 9.2 support! Interne Passing Juice
Asynch descriptor resize wait event in Oracle Interne Passing Juice
A little new feature for shared pool geeks :-) Interne Passing Juice
COUNT STOPKEY operation (the where ROWNUM <= N predicate) doesn't process over ~4 Billion rows and returns wrong results Interne Passing Juice
Read currently running SQL statement’s bind variable values using V$SQL_MONITOR.BIND_XML in Oracle 11.2 Interne Passing Juice
The most fundamental difference between hash and nested loop joins Interne Passing Juice
Oracle Closed World presentation links Interne Passing Juice
Which number takes more space in an Oracle row? Interne Passing Juice
Exadata v2 Smart Scan Performance Troubleshooting article Interne Passing Juice
Dropping and creating tables in read only tablespaces?! Interne Passing Juice
The full power of Oracle’s diagnostic events, part 2: ORADEBUG DOC and 11g improvements Interne Passing Juice
Oracle memory troubleshooting article Interne Passing Juice
Flexible Sqlplus command line history with RLWRAP Interne Passing Juice
Execution plan Quiz: Shouldn’t these row sources be the other way around ;-) Interne Passing Juice
Quiz: Explaining index creation Interne Passing Juice
cursor: pin S waits, sporadic CPU spikes and systematic troubleshooting Interne Passing Juice
KGH: NO ACCESS – Buffer cache inside streams pool too! Interne Passing Juice
Non-trivial performance problems Interne Passing Juice
Calculate SQL_ID and SQL_HASH_VALUE from SQL text Interne Passing Juice
Oracle Latch Contention Troubleshooting Interne Passing Juice
Oracle Session Snapper v3.10 Interne Passing Juice
How to CANCEL a query running in another session? Interne Passing Juice
New versions of LatchProf and LatchProfX for latch contention troubleshooting and tuning Interne Passing Juice
Oracle Troubleshooting: How to read Oracle ERRORSTACK output?! Interne Passing Juice
Using Process Memory Matrix script for calculating Oracle process memory usage on Solaris Interne Passing Juice
Oracle Wait Event reference Interne Passing Juice
Oracle Peformance Visualization… Interne Passing Juice
Bind Variable Peeking – execution plan inefficiency Interne Passing Juice
Recursive sessions… Interne Passing Juice
Sometimes things are easy (Part 1): How to fix wrapped execution plan text? Interne Passing Juice
Beyond Oracle Wait Interface – Part 2 Interne Passing Juice
NULL is not zero! Interne Passing Juice
Measuring what matters Interne Passing Juice
Finding the reasons for excessive logical IOs Interne Passing Juice
Explain Plan For command may show you the wrong execution plan – Part 1 Interne Passing Juice
Detect chained and migrated rows in Oracle – Part 1 Interne Passing Juice
What’s a good way to learn some Oracle internals every day? Interne Passing Juice
SystemTap is production supported in Redhat EL5.4 Interne Passing Juice
KGL simulator, shared pool simulator and buffer cache simulator – what are these? Interne Passing Juice
KGH: NO ACCESS allocations in V$SGASTAT – buffer cache within shared pool! Interne Passing Juice
Oracle 11gR2 has been released – and with column oriented storage option Interne Passing Juice
latch: cache buffers chains latch contention – a better way for finding the hot block Interne Passing Juice
Select COUNT(*) and COUNT(column) are different things! Interne Passing Juice
Alter system kill session and ORA-00031: session marked for kill Interne Passing Juice
An interview with me Interne Passing Juice
How to detect when a cursor was closed from SQL trace output? Interne Passing Juice
Identify the SQL statement causing those WAIT #X lines in a (top-truncated) sql tracefile Interne Passing Juice
(Secret) Preview of Oracle 12g CBO leaked from Oracle labs… Interne Passing Juice
Oracle memory troubleshooting, Part 3: Automatic top subheap dumping with heapdump Interne Passing Juice
Using Perfsheet and TPT scripts for solving real life performance problems Interne Passing Juice
ORA-04031 errors and monitoring shared pool subpool memory utilization with sgastatx.sql Interne Passing Juice
Oracle Performance Visualization videos from Sydney Interne Passing Juice
Scripts for showing execution plans via plain SQL and also in Oracle 9i Interne Passing Juice
“Free” DBA_HIST AWR views in 11g… Interne Passing Juice
I have been troubleshooting since I was a kid! :) Interne Passing Juice
Tracing Oracle SQL plan execution with DTrace Interne Passing Juice
Seminar feedback and pictures from Singapore Interne Passing Juice
Read OS environment variables using DBMS_SYSTEM.GET_ENV() Interne Passing Juice
I’m an Oracle ACE Director now :) Interne Passing Juice
Oracle 11g: Reading alert log via SQL Interne Passing Juice
Another LatchProfX use case Interne Passing Juice
The real history of Oracle database revealed! Interne Passing Juice
Oracle, Timesten and PL/SQL support Interne Passing Juice
The full power of Oracle’s diagnostic events, part 1: Syntax for KSD debug event handling Interne Passing Juice
60000 bind variables?! Maybe it’s time to use a temporary table instead… Interne Passing Juice
SQL_ID is just a fancy representation of hash value Interne Passing Juice
Performance Visualization, Capacity planning and Hotsos Symposium Interne Passing Juice
When was a table last changed? Interne Passing Juice
Multipart cursor subexecution and PRECOMPUTE_SUBQUERY hint Interne Passing Juice
Identifying shared memory segment users using lsof Interne Passing Juice
Reliable latch waits and a new blog Interne Passing Juice
Oracle memory troubleshooting, Part 1: Heapdump Analyzer Interne Passing Juice
Performance Visualization made easy – PerfSheet 2.0 beta Interne Passing Juice
A little oradebug enhancement in Oracle 11g Interne Passing Juice
Advanced Oracle Troubleshooting Guide, Part 9 – Process stack profiling from sqlplus using OStackProf Interne Passing Juice
Transportable tablespaces and ROWID uniqueness Interne Passing Juice
VLDB 2008 proceedings, Oracle optimizer plan stability, adaptive cursor sharing and SecureFiles Interne Passing Juice
Oracle hidden costs revealed, Part2 – Using DTrace to find why writes in SYSTEM tablespace are slower than in others Interne Passing Juice
Flexible sampling of any V$ or X$ view with sample.sql Interne Passing Juice
Case study on some rowcache internals, cached non-existent objects and a describe bug Interne Passing Juice
Why does even a small difference in SQL text cause a hard parse? Interne Passing Juice
Script: Display valid values for multioption parameters (including hidden parameters) Interne Passing Juice
The simplest query for checking what’s happening in a database Interne Passing Juice
Library cache latches gone in Oracle 11g Interne Passing Juice
Advanced Oracle Troubleshooting Guide, Part 8: Even more detailed latch troubleshooting using LatchProfX Interne Passing Juice
Closed database and WITH subquery Interne Passing Juice
Advanced Oracle Troubleshooting Guide, Part 7: Sampling latch holder statistics using LatchProf Interne Passing Juice
Another use case for WaitProf – diagnosing “events in waitclass Other” Interne Passing Juice
Killing an Oracle process from inside Oracle Interne Passing Juice
cursor_space_for_time To Be Deprecated Interne Passing Juice
Advanced Oracle Troubleshooting Guide, Part 6: Understanding Oracle execution plans with os_explain Interne Passing Juice
Debugger dangers Interne Passing Juice
Short note on KGX Mutexes Interne Passing Juice
Generating lots of rows using connect by – safely! Interne Passing Juice
Advanced Oracle Troubleshooting Guide, Part 5: Sampling V$ stuff with WaitProf. Really fast. Using SQL! Interne Passing Juice
Performance Tools Quick Reference Guide Interne Passing Juice
Advanced Oracle Troubleshooting Guide, Part 4: Diagnosing a long parsing issue Interne Passing Juice
Snapper shortcut Interne Passing Juice
Querying the current tracefile name, using SQL – with tracefile_identifier Interne Passing Juice
Oracle Troubleshooting with Snapper – detecting who’s causing excessive redo generation Interne Passing Juice
Performance and Scalalability Improvements in Oracle 10g and 11g Interne Passing Juice
Using autonomous transactions for sleeping Interne Passing Juice
SQL*Net break/reset to client Interne Passing Juice
SQL*Net message to client vs SQL*Net more data to client Interne Passing Juice
SQL*Net message to client wait isn’t really what it’s thought to be Interne Passing Juice
Oracle hidden costs revealed, part 1 – Does a batch job run faster when executed locally? Interne Passing Juice
Excellent article on Oracle 11g PL/SQL function result cache Interne Passing Juice
Can you write a working SQL statement without using any whitespace? Interne Passing Juice
Expensive calculator… Interne Passing Juice
Why does Oracle parameter count change during session lifetime? Interne Passing Juice
Systematic application troubleshooting in Unix Interne Passing Juice
Perl version of Snapper Interne Passing Juice
Sqlplus is my second home, part 5: Reading the name of currently executing script Interne Passing Juice
Oracle Security, Part 2: Your read only accounts aren’t that read only Interne Passing Juice
Sqlplus is my second home, part 4: Getting sqlplus parameter value into a variable Interne Passing Juice
A simple interview question Interne Passing Juice
How to resolve SQL object and column names all the way to base tables and columns in Oracle? Interne Passing Juice
Advanced Oracle Troubleshooting Guide, Part 3: More adventures in process stack Interne Passing Juice
Sqlplus is my second home, part 3: Colored selections in Windows XP command prompt Interne Passing Juice
Sqlplus is my second home, part 2: Running SQL scripts from remote locations using HTTP Interne Passing Juice
Operating systems are lazy allocating memory Interne Passing Juice
Advanced Oracle Troubleshooting Guide, Part 2: No magic is needed, systematic approach will do Interne Passing Juice
Oracle Session Snapper, part 2: Getting most out of Snapper Interne Passing Juice
Oracle 11g internals part 1: Automatic Memory Management Interne Passing Juice
Oracle Session Snapper – real-time session-level performance stats for DBAs Interne Passing Juice
Sqlplus is my second home, Part 1: HTMLizing your sqlplus output Interne Passing Juice
Session-level statspack Interne Passing Juice
A gotcha with parallel index builds, parallel degree and query plans Interne Passing Juice
My version of SQL string to table tokenizer Interne Passing Juice
Advanced Oracle Troubleshooting Guide: When the wait interface is not enough [part 1] Interne Passing Juice

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performance oracle troubleshooting execution exadata session part using linux sql

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oracle 117
part 50
troubleshooting 48
sql 41
performance 33

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Tags obsolètes Occurrences
<u> 3

Les balises HTML obsolètes sont des balises qui ne sont plus utilisés. Il est recommandé de supprimer ou de remplacer ces balises HTML, car elles sont désormais obsolètes.

Astuces vitesse

Excellent, votre site n'utilise pas de tableaux imbriqués.
Mauvais, votre site web utilise des styles css inline.
Génial, votre site web contient peu de fichiers CSS.
Parfait, votre site web contient peu de fichiers javascript.
Parfait : votre site tire parti de gzip.

Mobile

Optimisation mobile

Icône Apple
Méta tags viewport
Contenu FLASH

Optimisation

Sitemap XML

Votre site web dispose d’une sitemap XML, ce qui est optimal.

https://tanelpoder.com/sitemap.xml

Robots.txt

https://tanelpoder.com/robots.txt

Votre site dispose d’un fichier robots.txt, ce qui est optimal.

Mesures d'audience

Manquant

Nous n'avons trouvé aucun outil d'analytics sur ce site.

Un outil de mesure d'audience vous permet d'analyser l’activité des visiteurs sur votre site. Vous devriez installer au moins un outil Analytics. Il est souvent utile d’en rajouter un second, afin de confirmer les résultats du premier.

PageSpeed Insights

Dispositif
Les catégories

Free SEO Testing Tool

Free SEO Testing Tool est un outil gratuit de référencement qui vous aidera à analyser vos pages web