MacPorts 2.7.0-beta1 sqlite error: attempt to write a readonly database
jmr at macports.org
Fri Apr 30 04:15:43 UTC 2021
On 2021-4-30 08:13 , Ryan Schmidt wrote:
> On Apr 29, 2021, at 10:32, Joshua Root wrote:
>> It appears that SQLite version 3.35.5 as installed by the sqlite3 port deletes a database's -wal and -shm files at least some of the time when closing. SQLite version 3.28.0 as shipped as /usr/bin/sqlite3 on Catalina does not. The existence of these files is necessary to read a WAL mode database in a directory that you don't have write permission on.
> "When the last connection to a database closes, that connection does one last checkpoint and then deletes the WAL and its associated shared-memory file, to clean up the disk."
Yeah, that was the conclusion on the forum as well. The behaviour is
documented, but older versions definitely do not do that. :)
Fortunately it's just one simple function call to ensure the persistence
of the WAL files.
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