solidDB Help : Configuring and administering : Security : Database encryption : Decrypting a database
  
Decrypting a database
You can decrypt a database by starting solidDB with the ‑x decrypt command line option. You must also provide the encryption password.
To decrypt a database, start solidDB by using the following command syntax:
solid -x decrypt ‑x keypwdfile:filename
For example:
solid -x decrypt ‑x keypwdfile:pwd.txt
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Database encryption