sqlite3 shell command '.backup' and transaction
The sqlite3 backup method does not lock the database. I would suggest to use the following workaround if you would like to lock the database:
- Start a transaction (shared lock)
- By using any
INSERTstatement, the database gets a reserved lock. However, thisINSERTstatement can be empty. - Backup the database.
- End the transaction by using a
ROLLBACKorCOMMIT.
Code:
BEGIN;INSERT INTO <anytable> SELECT * FROM <anytable> WHERE 1=0;.backup <database> <file>ROLLBACK;A less hacky way would be if you are using a table named 'backup' and you are inserting a row (date,..) for each copy (if this information is relevant for you).