"Rich Rattanni" <[EMAIL PROTECTED]> wrote: > On 3/19/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > > Siebe Warners <[EMAIL PROTECTED]> wrote: > > > > > > When i perform a sequence of commands like: > > > BEGIN; > > > UPDATE t SET col="val1" WHERE key="key1"; > > > ..... > > > UPDATE t SET col="valx" WHERE key="keyx"; > > > COMMIT; > > > > > > Using strace i observe: > > > - a temp file is created at the start of the transaction > > > > The extra file being opened is a rollback journal for each > > particular UPDATE statement.... > > > > You can avoid this extra journal file by using UPDATE OR FAIL > > instead of UPDATE. > > Would it also be acceptable (assuming you want the protection offered > by the temporary tables) to do ... "PRAGMA temp_store = MEMORY" on > the database? >
The temp_store pragma only effects the placement of temporary tables. But the rollback journal is not a table. The temp_store pragma has no effect on the placement of rollback journals. Rollback journals always go to disk. -- D. Richard Hipp <[EMAIL PROTECTED]> ----------------------------------------------------------------------------- To unsubscribe, send email to [EMAIL PROTECTED] -----------------------------------------------------------------------------
