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MySQL Error: Column count of mysql.proc is wrong. Expected 20, found 16. The table is probably corrupted;

Encountered this error when dropping a table on a database that had recently been migrated from 5.0 to 5.5:

The migration used a “mysqldump –all-databases” so it included the “mysql” database. Apparently the “mysql.proc” table changed between the versions. The fix on the new server is to run:

I didn’t figure this out … instead Daniel Tillett gets the credit.

  • Mark Walker

    This fix doesn’t work here on Ubuntu 14.04 ‘created with MySQL 50163, now running 50169)

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