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MySQL 1198: Error closing file.

  1. Check the MySQL error log for any additional messages related to file handling or disk issues. This can give clues about the root cause. You can find the error log location by running:



SHOW VARIABLES LIKE 'log_error';

  1. Verify disk space on the server to ensure there's enough space for operations. Run the following command in the server's terminal:



df -h

  1. Check file system permissions to ensure the MySQL user has the necessary rights to write to and close files in the data directory and temporary directories.



  1. Confirm that there are no operating system-level errors, such as read-only file system or disk failures, by reviewing the system logs (`/var/log/syslog` on Ubuntu, for instance).



  1. If the issue occurred during a specific operation (like a large data import), try to isolate and repeat the operation with a smaller dataset to see if the problem persists.



  1. Ensure the MySQL server is not hitting its open file limit. Check the current open file limit and the number of open files with:



SHOW VARIABLES LIKE 'openfileslimit';

And:

lsof | grep mysql | wc -l

  1. Restart the MySQL service gracefully to clear any temporary file handling anomalies. Use the appropriate command for your system, such as:



sudo systemctl restart mysql

  1. If the problem is related to a specific table, run a table check and repair if necessary:



CHECK TABLE yourtablename;
REPAIR TABLE your
tablename;

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MySQL

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Debug Your Infrastructure

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AWS CloudWatch
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Pod Stuck in CrashLoopBackOff
Database connection timeout
Docker Container won't Start
Kubernetes ingress not working
Redis connection refused
CI/CD pipeline failing

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 debugging in Minutes

— Grab the Ultimate Cheatsheet

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