In the documents, using PRAGMA synchronous 1 (NORMAL) is supposed to be safe unless there is an OS crash or power failure.
I've had a few customers (about one a month, out of thousands) that is getting the "database disk image is malformed" ExtErr=11 error with the NORMAL pragma, and they claim there was no crash, power failure or anything else unusual. The database _does_ get hammered under normal operation. There are two separate sqlite3* handles to the database. Each one is protected by a critical section, so there is never more than one thread accessing a handle at a time. The database is on a local NTFS drive. Two questions: 1. Is setting synchronous to FULL necessary to prevent these corruption problems? 2. NORMAL is much slower than NONE. Is FULL much slower than NORMAL? Thanks Doug
