MySQL failed to start

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MySQL failed to start
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If you see this error, it means you have
forgotten something while creating table.

• Lets see the causes fixes to it
• Possible Causes For Error 1054
• Missing column in a table.
• Single quotes missing while inserting varchar
  value.
• Mismatch between CREATE_TABLE and UPDATE.

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Possible Causes For This Error

• MySQL corrupted If MySQL table gets corrupted,
  it wont allow the MySQL server to start.
• Configuration error If there is any error or
  unsupported parameters in the configuration file,
  it will not allow the MySQL to start. 
• Permissions/Ownership issues If there are any
  accidental changes in permission or ownership of
  MySQL files, it wont allow the MySQL to start. 
• Disk space issue If there is a lack of
  sufficient disk space in the server, it wont
  allow the MySQL to start.
• Memory issues If there are other processes
  running and MySQL is not getting sufficient
  memory, it wont allow the MySQL to start.

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Solution

• If MySQL binary or tables get corrupted, you need
  to reinstall the server.
• In order to fix configuration issue, we need to
  access the MySQL configuration file (my.cnf)
  where the errors are highlighted so that it can
  be resolved.
• In order to fix Permissions/Ownership issues, you
  need to first access the data directory and set
  it up in such a way that the MySQL user can read
  and modify it
• In order to fix Disk space issue, you need to
  remove unnecessary data or move to another
  partition.
• In order to fix Memory issues, you need to
  increase the swap memory allocated to the server.
• If the issue still persists

failed to start mysql community server
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• Ask for help  Our Support Engineers will walk
  you through to resolve such issues.
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