One of the other threads is writing at the same time. SQLite only allows a
single writer at a time to a single database file. Others have to wait in
line.
Your solution is that when you get an SQLITE_BUSY, delay for a short while
and then try again. Keep trying until you break through.
Note what I do when the application detects that the database is locked:
SQL Error: SQLITE_BUSY[5]: database is locked
0x10d4f8 waiting 1 sec <-------------------------
0x10d4f8 begin immediate transaction
SQL Error: SQLITE_BUSY[5]: database is locked
This loop continue even when all other threads are done writing and
waiting in an idle state.
/Daniel
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