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Recover an old database

Discussion in 'Databases' started by rich1812, Jan 1, 2019.

  1. #1
    Hello, I have an old wordpress database, before I had a chance to do a data dump, I lost it due to an operation error, but I still have the old structure of the database backed up. The old woedpress database is called wp_db, so I dug it out from this directory. /usr/local/mysql-5.7.24-macos10.14-x86_64/data, (I use a Mac.) In this data folder, it contains all databases include wp_db, it has ib_logfile0, ib_logfile1 and ibdata1, if I understand it correctly, the ibdata1 contains most of the old data, is it possible to reconstruct the wp_db base on these items? If so, how? Thanks.
    Last edited: Jan 1, 2019
    rich1812, Jan 1, 2019 IP
  2. jestep

    jestep Prominent Member Premium Member

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    Lookup how to recover Innodb tables from ibdata1. I'll just say, in general it's difficult and the process is different in every instance.

    You can try percona's tool: https://launchpad.net/percona-data-recovery-tool-for-innodb

    Sometimes all it takes is putting the server in a forced recovery mode and starting it.
    jestep, Jan 2, 2019 IP
  3. RoseHosting

    RoseHosting Well-Known Member

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    You can also try to install the same MySQL server version on your machine and replace the default `data` directory with the one from your backup. Then you can back up the database using the standard mysqldump tool.
    RoseHosting, Jan 8, 2019 IP