Detecting Locked Tables with Locked by LOCK TABLE
Unlocking a specific database table locked by the LOCK TABLE command can be a critical troubleshooting step. Fortunately, MySQL provides a straightforward mechanism for detecting locked tables.
Solution:
Utilize the SHOW OPEN TABLES command to retrieve information about currently open tables. By filtering the results based on specified criteria, you can pinpoint locked tables.
For instance, to identify locked tables in a particular database:
SHOW OPEN TABLES WHERE `Table` LIKE '%[TABLE_NAME]%' AND `Database` LIKE '[DBNAME]' AND In_use > 0;
In this command:
- [TABLE_NAME] is the name of the table in question.
- [DBNAME] is the database containing the locked table.
- In_use is a column that indicates the number of active connections using the table.
This query will return rows for any tables that meet the specified criteria, effectively allowing you to detect locked tables in the specified database.
The above is the detailed content of How to Detect Locked Tables in MySQL using the SHOW OPEN TABLES Command?. For more information, please follow other related articles on the PHP Chinese website!
How to solve the problem of mysql cannot open shared libraryMar 04, 2025 pm 04:01 PMThis article addresses MySQL's "unable to open shared library" error. The issue stems from MySQL's inability to locate necessary shared libraries (.so/.dll files). Solutions involve verifying library installation via the system's package m
Reduce the use of MySQL memory in DockerMar 04, 2025 pm 03:52 PMThis article explores optimizing MySQL memory usage in Docker. It discusses monitoring techniques (Docker stats, Performance Schema, external tools) and configuration strategies. These include Docker memory limits, swapping, and cgroups, alongside
How do you alter a table in MySQL using the ALTER TABLE statement?Mar 19, 2025 pm 03:51 PMThe article discusses using MySQL's ALTER TABLE statement to modify tables, including adding/dropping columns, renaming tables/columns, and changing column data types.
Run MySQl in Linux (with/without podman container with phpmyadmin)Mar 04, 2025 pm 03:54 PMThis article compares installing MySQL on Linux directly versus using Podman containers, with/without phpMyAdmin. It details installation steps for each method, emphasizing Podman's advantages in isolation, portability, and reproducibility, but also
What is SQLite? Comprehensive overviewMar 04, 2025 pm 03:55 PMThis article provides a comprehensive overview of SQLite, a self-contained, serverless relational database. It details SQLite's advantages (simplicity, portability, ease of use) and disadvantages (concurrency limitations, scalability challenges). C
How do I configure SSL/TLS encryption for MySQL connections?Mar 18, 2025 pm 12:01 PMArticle discusses configuring SSL/TLS encryption for MySQL, including certificate generation and verification. Main issue is using self-signed certificates' security implications.[Character count: 159]
Running multiple MySQL versions on MacOS: A step-by-step guideMar 04, 2025 pm 03:49 PMThis guide demonstrates installing and managing multiple MySQL versions on macOS using Homebrew. It emphasizes using Homebrew to isolate installations, preventing conflicts. The article details installation, starting/stopping services, and best pra
What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)?Mar 21, 2025 pm 06:28 PMArticle discusses popular MySQL GUI tools like MySQL Workbench and phpMyAdmin, comparing their features and suitability for beginners and advanced users.[159 characters]
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.
Atom editor mac version download
The most popular open source editor
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.
