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Database physical file size compaction without changing DBID of the database.

This will help the incremental backup tools with other hand support to reduce disk space.

  • Avatar32.5fb70cce7410889e661286fd7f1897de Guest
  • Jul 31 2020
  • Will not implement
  • Attach files
  • Admin
    Thomas Hampel commented
    31 Jul 15:13

    I dont understand the problem.
    Running compact -c will change the DBIID on purpose to indicate that a fullbackup of the database is required. Without it you can not apply translogs anymore.

    Furthermore please note that you should not run compact over and over again to squeeze the size of the database to its absolute minimum because this will increase the fragmentation on disk. This can lead to performance problems. It is perfectly fine to keep some whitespace within the NSF, so that new documents will be writen into the whitespace rather than expanding the file on disk. Reorganizing whitespace (without reducing the NSF file size on disk) is the better choice.