I have tried to transfer my Gramps DB files from one computer to another but I keep getting the below error after even trying to break the lock of the database file:
Gramps has detected a problem in opening the 'environment' of the
underlying Berkeley database used to store this Family Tree. The most
likely cause is that the database was created with an old version of the
Berkeley database program, and you are now using a new version. It is
quite likely that your database has not been changed by Gramps.
If possible, you should revert to your old version of Gramps and its
support software; export your database to XML; close the database; then
upgrade again to this version of Gramps and import the XML file in an
empty Family Tree. Alternatively, it may be possible to use the Berkeley
database recovery tools.
(-30973, 'BDB0087 DB_RUNRECOVERY: Fatal error, run database recovery --
BDB1544 process-private: unable to find environment')
I also tried to use db4.8_recover -c but failed.
OS Name: Ubuntu 18.04 (Bionic)
Gramps Version: 4.2.8
Schema Version: 17
BDB Version: 5.3.28
Could someone suggest a step-by-step solution to solve this problem?