(mysql.info) bdb-errors

 
 14.5.7 Errors That May Occur When Using `BDB' Tables
 ----------------------------------------------------
 
    * If the following error occurs when you start `mysqld' after
      upgrading, it means that the current version of `BDB' doesn't
      support the old log file format:
 
           bdb:  Ignoring log file: .../log.NNNNNNNNNN:
           unsupported log version #
 
      In this case, you must delete all `BDB' logs from your data
      directory (the files that have names of the form `log.NNNNNNNNNN')
      and restart `mysqld'. We also recommend that you then use
      `mysqldump --opt' to dump your `BDB' tables, drop the tables, and
      restore them from the dump file.
 
    * If autocommit mode is disabled and you drop a `BDB' table that is
      referenced in another transaction, you may get error messages of
      the following form in your MySQL error log:
 
           001119 23:43:56  bdb:  Missing log fileid entry
           001119 23:43:56  bdb:  txn_abort: Log undo failed for LSN:
                                  1 3644744: Invalid
 
      This is not fatal, but the fix is not trivial. Until the problem
      is fixed, we recommend that you not drop `BDB' tables except while
      autocommit mode is enabled.

Info Catalog

(mysql.info) bdb-restrictions

(mysql.info) bdb-storage-engine

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