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      • Release notes index
      • Percona Server for MySQL 8.0.34-26 (2023-09-26)
      • Percona Server for MySQL 8.0.33-25 Update (2023-08-02)
      • Percona Server for MySQL 8.0.33-25 (2023-06-15)
      • Percona Server for MySQL 8.0.32-24 (2023-03-20)
      • Percona Server for MySQL 8.0.31-23 (2023-02-09)
        • Percona Server for MySQL 8.0.30-22 Update (2022-11-21)
        • Percona Server for MySQL 8.0.30-22 (2022-11-21)
        • Percona Server for MySQL 8.0.29-21 (2022-08-08)
        • Percona Server for MySQL 8.0.28-20 (2022-06-20)
        • Percona Server for MySQL 8.0.28-19 (2022-05-12)
        • Percona Server for MySQL 8.0.27-18 (2022-03-02)
        • Percona Server for MySQL 8.0.26-17 (2022-01-26)
        • Percona Server for MySQL 8.0.26-16 (2021-10-20)
        • Percona Server for MySQL 8.0.25-15 (2021-07-13)
        • Percona Server for MySQL 8.0.23-14 (2021-05-12)
        • Percona Server for MySQL 8.0.22-13 (2020-12-14)
        • Percona Server for MySQL 8.0.21-12 (2020-10-13)
        • Percona Server for MySQL 8.0.20-11 (2020-07-21)
        • Percona Server for MySQL 8.0.19-10 (2020-03-23)
        • Percona Server for MySQL 8.0.18-9
        • Percona Server for MySQL 8.0.17-8
        • Percona Server for MySQL 8.0.16-7
        • Percona Server for MySQL 8.0.15-6
        • Percona Server for MySQL 8.0.15-5
        • Percona Server for MySQL 8.0.14
        • Percona Server for MySQL 8.0.13-4
        • Percona Server for MySQL 8.0.13-3
        • Percona Server for MySQL 8.0.12-2rc1
      • Adaptive network buffers
        • Audit Log Filter overview
        • Install the Audit Log Filter
          • Overview
          • XML (New style)
          • XML (Old style)
          • JSON
        • Audit Log Filter security
        • Audit Log Filter compression and encryption
        • Reading Audit Log Filter files
        • Filter the Audit Log Filter logs
        • Audit Log Filter restrictions
        • Audit Log Filter file naming conventions
        • Disable Audit Log Filter logging
        • Audit log filter functions, options and variables
        • Uninstall Audit Log Filter
      • Limiting the disk space used by binary log files
      • Extended mysqlbinlog
      • Extended SELECT INTO OUTFILE/DUMPFILE
      • Expanded fast index creation
      • Kill idle transactions
      • The ProcFS plugin
      • Support for PROXY protocol
      • SEQUENCE_TABLE(n) function
      • Slow query log rotation and expiration
      • Thread pool
      • Trigger updates
      • Percona Toolkit UDFs
      • Utility user
      • Quickstart guide for Percona Server for MySQL
      • Install Percona Server for MySQL from repositories
        • Use APT repositories
        • Files in DEB package
        • Build APT packages
        • Downloaded DEB packages
        • Apt pinning
        • Run Percona Server for MySQL
        • Uninstall
        • Use RPM repositories
        • Files in RPM package
        • Downloaded RPM packages
        • Run Percona Server for MySQL
        • Uninstall
        • Install with binary tarballs
        • Binary tarballs available
        • Install Percona Server for MySQL from a source tarball
        • Compile Percona Server for MySQL 8.0 from source
        • Install using Docker
        • Docker environment variables
      • Upgrade guide
      • Upgrade using the Percona repositories
      • Upgrade from systems that use the MyRocks or TokuDB storage engine and partitioned tables
      • Upgrade using Standalone Packages
      • Downgrade
      • Working with AppArmor
      • Binary logs and replication improvements
      • Post-installation
      • Working with SELinux
      • Extended SHOW GRANTS
      • UNINSTALL COMPONENT
      • Backup and restore overview
      • Backup locks
      • Extended mysqldump
      • Start transaction with consistent snapshot
        • Using LDAP authentication plugins
        • LDAP authentication plugin system variables
        • Data masking overview
        • Compare the data masking component to the data masking plugin
          • Install the data masking component
          • Data masking component functions
          • Uninstall the component
          • Install and remove the data masking plugin
          • Data masking plugin functions
      • FIDO authentication plugin
      • Encryption functions
      • PAM authentication plugin
      • SSL improvements
      • Server variables
        • Data at Rest Encryption
        • Use the keyring component or keyring plugin
          • Using the Key Management Interoperability Protocol (KMIP)
          • Use the Amazon Key Management Service (AWS KMS)
          • Encrypt File-Per-Table Tablespace
          • Encrypt schema or general tablespace
          • Encrypt system tablespace
          • Encrypt temporary files
          • Encrypt Binary Log Files and Relay Log Files
          • Encrypting the Redo Log data
          • Encrypt the undo tablespace
          • Rotate the master key
          • Advanced encryption key rotation
          • Encrypt doublewrite buffers
          • Verify the encryption for tables, tablespaces, and schemas
      • Manage group replication flow control
      • Group replication system variables
      • Audit log plugin
      • Jemalloc memory allocation profiling
      • Misc. INFORMATION_SCHEMA tables
      • Process list
      • Slow query log
      • User statistics
      • Use Percona Monitoring and Management (PMM) Advisors
      • Handle corrupted tables
      • Libcoredumper
      • Too many connections warning
      • Stacktrace
      • Thread based profiling
        • Multiple page asynchronous I/O requests
        • XtraDB changed page tracking
        • Compressed columns with dictionaries
        • Enforcing storage engine
        • Improved MEMORY storage engine
        • InnoDB page fragmentation counters
        • InnoDB full-text search improvements
        • Improved InnoDB I/O scalability
        • Extended show engine InnoDB status
        • The Percona XtraDB storage engine
        • Prefix index queries optimization
        • Limit the estimation of records in a Query
        • Show storage engines
        • XtraDB performance improvements for I/O-bound highly-concurrent workloads
        • Percona MyRocks introduction
        • Percona MyRocks installation guide
        • Updated supported features
        • MyRocks limitations
        • Differences between Percona MyRocks and Facebook MyRocks
        • MyRocks Information Schema tables
        • MyRocks server variables
        • MyRocks status variables
        • Gap locks detection
        • Data loading
        • Installing and configuring Percona Server for MySQL with ZenFS support
        • TokuDB introduction
        • TokuDB installation
        • Use TokuDB
        • Fast updates with TokuDB
        • TokuDB files and file types
        • TokuDB file management
        • TokuDB background ANALYZE TABLE
        • TokuDB variables
        • TokuDB status variables
        • TokuDB fractal tree indexing
        • TokuDB troubleshooting
        • TokuDB Performance Schema integration
        • Frequently asked questions
        • Migrate and removing the TokuDB storage engine
        • Percona TokuBackup
      • List of variables introduced in Percona Server for MySQL 8.0
      • List of features available in Percona Server for MySQL releases
      • Percona Server for MySQL feature comparison
      • Understand version numbers
      • Development of Percona Server for MySQL
      • Trademark policy
      • Index of INFORMATION_SCHEMA tables
      • Frequently asked questions
        • Q: Will Percona Server for MySQL with XtraDB invalidate our MySQL support?
        • Q: Will we have to GPL our whole application if we use Percona Server for MySQL with XtraDB?
        • Q: Do I need to install Percona client libraries?
        • Q: When using the Percona XtraBackup to set up a replication replica on Debian-based systems I’m getting: “ERROR 1045 (28000): Access denied for user ‘debian-sys-maint’@’localhost’ (using password: YES)”
      • Copyright and licensing information
      • Glossary

    • Q: Will Percona Server for MySQL with XtraDB invalidate our MySQL support?
    • Q: Will we have to GPL our whole application if we use Percona Server for MySQL with XtraDB?
    • Q: Do I need to install Percona client libraries?
    • Q: When using the Percona XtraBackup to set up a replication replica on Debian-based systems I’m getting: “ERROR 1045 (28000): Access denied for user ‘debian-sys-maint’@’localhost’ (using password: YES)”

    Frequently asked questions¶

    Q: Will Percona Server for MySQL with XtraDB invalidate our MySQL support?¶

    A: We don’t know the details of your support contract. You should check with your Oracle representative. We have heard anecdotal stories from MySQL Support team members that they have customers who use Percona Server for MySQL with XtraDB, but you should not base your decision on that.

    Q: Will we have to GPL our whole application if we use Percona Server for MySQL with XtraDB?¶

    A: This is a common misconception about the GPL. We suggest reading the Free Software Foundation ‘s excellent reference material on the GPL Version 2, which is the license that applies to MySQL and therefore to Percona Server for MySQL with XtraDB. That document contains links to many other documents which should answer your questions. Percona is unable to give legal advice about the GPL.

    Q: Do I need to install Percona client libraries?¶

    A: No, you don’t need to change anything on the clients. Percona Server for MySQL is 100% compatible with all existing client libraries and connectors.

    Q: When using the Percona XtraBackup to set up a replication replica on Debian-based systems I’m getting: “ERROR 1045 (28000): Access denied for user ‘debian-sys-maint’@’localhost’ (using password: YES)”¶

    A: In case you’re using the init script on Debian-based system to start mysqld, be sure that the password for debian-sys-maint user has been updated and it’s the same as that user’s password from the server that the backup has been taken from. The password can be seen and updated in /etc/mysql/debian.cnf. For more information on how to set up a replication replica using Percona XtraBackup see this how-to.

    Contact us

    For free technical help, visit the Percona Community Forum.

    To report bugs or submit feature requests, open a JIRA ticket.

    For paid support and managed or consulting services , contact Percona Sales.


    Last update: 2023-01-12
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