Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Deleting SQLite database : How to? Ask Question. Asked 7 years, 10 months ago.
Active 3 years, 4 months ago. Viewed 14k times. Improve this question. SQLite databases are just files. You can delete the database by deleting the file. Reference: sqlite. You should be able to just use TapsDao database with the database getter from that snippet. What I should do? I though the Provider will take care of having only one instance of the class.
And I have set dispose to db. Am I missing something? If it's placed above you shouldn't need to use a Singleton. ErmiCode : How do you do this, please? Skip to content. Star 1. New issue. Jump to bottom. Labels question. Linked pull requests. Copy link. I also forgot my schema version, therefore I'm a bit stuck. So my questions are: How can I wipe everything and start from the beginning without having to create a new project?
Where can I find the db. I couldn't find it in my project or in any other directory. Thanks for the quick answer! Many thanks! EDIT : In most cases, just uninstalling the app should do the trick.
Good to know than! Thanks for taking the time and helping me with those issues! Much appreciated. MuTe33 closed this Nov 30, Right - that should be?? I've edited my comment. Got you. I had misparsed the sentence! Sign up for free to join this conversation on GitHub.
Already have an account? The local file I use in the case when it works to delete it is the ressource file in my local filesystem. But why is it a problem to copy a file from the compiled-in ressources? Hi what os are u on? Tried hopefully the same on win 10 and could not reproduce it.
I assume that u are in fact logged in as lukas on your test system. I wonder if it has to be a db or any file would do it? In my test case the file type doesn't matter - as you can see I now used a txt-file to produce the error. Hi is there anyway u could upload your complete sample for me? I have a feeling something is wrong if u cant even delete it after a reboot as any locks will be removed so i wonder if Qt or local to ur system :. Hi It seems that the "developer" folder that is created is read only and hence the file is also made readonly and then remove wont delete it.
If I call f. I'm sorry that I didn't notice myself, and that it took you all so much time and 18 posts. But it actually makes sense.
Of course the compiled-in ressource file has the ReadOnly-flag set - nobody is supposed to change a compiled-in ressource, and it is not possible either. But I was simply not aware that the ReadOnly-flag also would be set for a file that was copied from ressources. Maybe this is something you could include in the documentation about QRessources? Would have helped me a lot :. Funny enough , its very much same situation as in old times when you copy files from a cdrom to some folder.
There may also be improper shutdown of the machine involved but I am not very sure. So it could be 1 update the db at location A, 2 synch which will copy -wal and -shm to location B , 3 update the db at location B. The problem is that I have the -wal -shm files on two different locations which are synced. The -shm files are out of synce, but -wal files are both empty. And I am sure there are no running sqlite3 processes accessing the databases on either locations. In this case, I am not sure that updating the database files using the command that you mentioned on two locations makes sense.
So just deleting the -wal and -shm files should be sufficient? It makes no sense to be syncing the DB, wal and shm files unless they represent a snapshot in time of the file state for all three. And unless that is arranged, it makes little sense to be syncing the DB file alone when obviously that is done while the wal and shm files exist. Dan's advice, applied to the three files where SQLite has created them, is sensible, safe and simple. It is probably simpler than testing to see whether the wal file is empty and conditionally handling the results.
That, together with not syncing the wal and shm files, which could foul things up when the improperly synced copies are used, if they ever are , would be a complete, safe solution. The smart solution would be to put an end to whatever sequence of events is routinely causing some application s using SQLite to either neglect closing all DB connections or be terminated before doing so.
But if you're incorrect and delete them, the database may become corrupt. But if it is not, then the shell tool will not corrupt the db. So usually it's better to do it that way. But wouldn't it cause the main db file to be out-of-synch?
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