| ▲ | chasil 7 months ago | |
That is not the only limitation of WAL mode. “It is not possible to change the page size after entering WAL mode.” “In addition, WAL mode comes with the added complexity of checkpoint operations and additional files to store the WAL and the WAL index.” https://www.vldb.org/pvldb/vol15/p3535-gaffney.pdf “SQLite does not guarantee ACID consistency with ATTACH DATABASE in WAL mode. “Transactions involving multiple attached databases are atomic, assuming that the main database is not ":memory:" and the journal_mode is not WAL. If the main database is ":memory:" or if the journal_mode is WAL, then transactions continue to be atomic within each individual database file. But if the host computer crashes in the middle of a COMMIT where two or more database files are updated, some of those files might get the changes where others might not.” | ||