Crashes

I discussed crashes and a general troubleshooting sequence applicable to them in When the Server Does Not Answer. Start by using the techniques described in the previous section: look in the error logfile, and analyze its content. This works in most cases, but this section discusses what to do if the error log does not contain enough information to help you troubleshoot the crash.

The latest versions of the MySQL server can print a backtrace, even in release builds. Therefore, if the error logfile does not contain a backtrace, check whether the mysqld binary is stripped.^[18] (On Unix-style systems, the file command will report whether an executable file is stripped.) If it is, replace the mysqld binary with the one that came with your MySQL distribution. If you built it yourself, compile a version with symbols for use in testing.