diff --git a/manifest b/manifest
index dba6635dd7..b965ba5329 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Remove\slegacy\sjournal\sformats.\s(CVS\s1549)
-D 2004-06-09T19:03:55
+C Turn\son\sthe\satomic\smultifile\scommit\slogic.\s\sIt\sdoes\snot\swork\sright\syet,\sbut\nit\shas\sat\sleast\sstopped\sfailing\sasserts.\s(CVS\s1550)
+D 2004-06-09T20:03:09
 F Makefile.in ab7b0d5118e2da97bac66be8684a1034e3500f5a
 F Makefile.linux-gcc a9e5a0d309fa7c38e7c14d3ecf7690879d3a5457
 F README f1de682fbbd94899d50aca13d387d1b3fd3be2dd
@@ -25,7 +25,7 @@ F sqlite.def fc4f5734786fe4743cfe2aa98eb2da4b089edb5f
 F sqlite.pc.in 30552343140c53304c2a658c080fbe810cd09ca2
 F src/attach.c 93b8ecec4a8d7b4e9f2479e2327d90c9d01765e8
 F src/auth.c 5c2f0bea4729c98c2be3b69d6b466fc51448fe79
-F src/btree.c 7526d697cad3fbf731a9238d047337581d19b43b
+F src/btree.c 281af87aa117de024f5b6c2728a2339cba9ef584
 F src/btree.h 589427ac13bb544d298cd99726e2572a6fe4bdaa
 F src/build.c 4ea78aba171f02b96254dd7a312e4266d3693bfe
 F src/date.c 8e6fa3173386fb29fdef012ee08a853c1e9908b2
@@ -37,7 +37,7 @@ F src/hash.c 440c2f8cb373ee1b4e13a0988489c7cd95d55b6f
 F src/hash.h 762d95f1e567664d1eafc1687de755626be962fb
 F src/insert.c 4268d9e3959cc845ea243fb4ec7507269404dad9
 F src/legacy.c ad23746f15f67e34577621b1875f639c94839e1f
-F src/main.c 8a7725b40fbe645883b2162aee782ad1063435b4
+F src/main.c 3df17ac486ff1772af8b537cf0bbd0aabba6e863
 F src/md5.c 4302e84ae516c616bb079c4e6d038c0addb33481
 F src/os.h 23c69c5084e71b5fe199ff1c4e35a4aded0f1380
 F src/os_common.h 6393ac67a3a7b4aea19ff17529980ecf77eb2348
@@ -47,7 +47,7 @@ F src/os_unix.c 1d6f3d1a87d4aa0e4490bcc47b3f0ff9b2e37e7a
 F src/os_unix.h 1cd6133cf66dea704b8646b70b2dfdcbdd9b3738
 F src/os_win.c 6b8f9fcc683bb888e07fc485372803baa68faadb
 F src/os_win.h 004eec47b1780fcaf07420ddc2072294b698d48c
-F src/pager.c 5c37b973e827d7a9a45070498356e67ee720f960
+F src/pager.c f93d104b61278246fb06859227ac5fd87e6a67f0
 F src/pager.h ca8f293e1d623a7c628a1c5e0c6cf43d5bbb80bf
 F src/parse.y 097438674976355a10cf177bd97326c548820b86
 F src/pragma.c 3251628662963f30a95133b19d59e4bc08226c76
@@ -56,7 +56,7 @@ F src/random.c eff68e3f257e05e81eae6c4d50a51eb88beb4ff3
 F src/select.c 1f8355e702f109f6771f82a9bfe7aac4c82cbaf2
 F src/shell.c ca519519dcbbc582f6d88f7d0e7583b857fd3469
 F src/sqlite.h.in 6ad05abc7fd72da74691e1eb45f0eff4117eba4e
-F src/sqliteInt.h c0a328c7567cdeebe14d7a4668f22946e281ebc9
+F src/sqliteInt.h f384e81fa635b6323aa6297011d9dc2d976868fb
 F src/table.c af14284fa36c8d41f6829e3f2819dce07d3e2de2
 F src/tclsqlite.c f5c5116720baefb7de5d6acf18baedf1e42756cc
 F src/test1.c f78d6ac0675bc5db48dac9c5379c965bdadb9113
@@ -70,11 +70,11 @@ F src/update.c 259f06e7b22c684b2d3dda54a18185892d6e9573
 F src/utf.c c2c8e445bfea724f3502609d6389fe66651f02ab
 F src/util.c e8629f04d920ae968fced709dc7a3a2c62b65ac4
 F src/vacuum.c b921eb778842592e1fb48a9d4cef7e861103878f
-F src/vdbe.c fec13be8b6f03158bfb3069c7bd6182eb3ef4fca
+F src/vdbe.c 5896c7462adcb0a62255f4172d5809dc1b220949
 F src/vdbe.h 46f74444a213129bc4b5ce40124dd8ed613b0cde
 F src/vdbeInt.h ab592f23ed5a1913f9a506bd7b76c5e39377942a
 F src/vdbeapi.c 4ac95766b0515538037a7aec172ed26142f97cf9
-F src/vdbeaux.c 5efecdafe745a90e7c5173403d0065bdd38395a7
+F src/vdbeaux.c 6412cbc491a51950eb6910647656929ea6aaeccc
 F src/vdbemem.c 04502b81039f9a2b1c9a096e894eecf6d4877508
 F src/where.c 32578882a245f8ac3303c5cea4664cd51fc73891
 F test/all.test 569a92a8ee88f5300c057cc4a8f50fbbc69a3242
@@ -132,7 +132,7 @@ F test/misuse.test 1095f26d1aed406c65e1d2eba651c4bb7c38cbff
 F test/notnull.test 7a08117a71e74b0321aaa937dbeb41a09d6eb1d0
 F test/null.test c14d0f4739f21e929b8115b72bf0c765b6bb1721
 F test/pager.test 548968643d91c1c43a3a3eb1a232e9ca87b4069e
-F test/pager2.test 7ff175a28484fd324df9315dfe35f6fb159910ec
+F test/pager2.test 55469c7c1c1a54d6b32d7b3cc99001e90101a1ce
 F test/pragma.test 1b6792d4af550ca4973096d77fc278dd6c32c4dd
 F test/printf.test 46b3d07d59d871d0831b4a657f6dfcafe0574850
 F test/progress.test 7542a6ac7894a1b7730c1f9a27f3f8b9388a4d25 x
@@ -218,7 +218,7 @@ F www/support.tcl 1801397edd271cc39a2aadd54e701184b5181248
 F www/tclsqlite.tcl 19191cf2a1010eaeff74c51d83fd5f5a4d899075
 F www/vdbe.tcl 59288db1ac5c0616296b26dce071c36cb611dfe9
 F www/whentouse.tcl a8335bce47cc2fddb07f19052cb0cb4d9129a8e4
-P dc0763455bbf54c1d8728e16033709caedd6e1c6
-R b4b9380769fdca06ed613331f57399e7
+P a12bef4a0877fb1dca531509a1186e092727b6d8
+R 701fea12013c3300eecc0127ba6ceafd
 U drh
-Z 21a5c28788a000b1f8a2eec2e4e3d0e6
+Z 742136040c4805983d993b10276e9a39
diff --git a/manifest.uuid b/manifest.uuid
index 948d08cb7b..512ae0f9fd 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-a12bef4a0877fb1dca531509a1186e092727b6d8
\ No newline at end of file
+3674b25edc37145b2b1275dd20580015ace66aa7
\ No newline at end of file
diff --git a/src/btree.c b/src/btree.c
index aed38e0aba..faa39705e8 100644
--- a/src/btree.c
+++ b/src/btree.c
@@ -9,7 +9,7 @@
 **    May you share freely, never taking more than you give.
 **
 *************************************************************************
-** $Id: btree.c,v 1.162 2004/06/09 17:37:23 drh Exp $
+** $Id: btree.c,v 1.163 2004/06/09 20:03:09 drh Exp $
 **
 ** This file implements a external (disk-based) database using BTrees.
 ** For a detailed discussion of BTrees, refer to
@@ -1250,7 +1250,7 @@ int sqlite3BtreeBeginTrans(Btree *pBt, int wrflag, int nMaster){
   }
 
   if( rc==SQLITE_OK && wrflag ){
-    rc = sqlite3pager_begin(pBt->pPage1->aData, 0);
+    rc = sqlite3pager_begin(pBt->pPage1->aData, nMaster);
     if( rc==SQLITE_OK ){
       rc = newDatabase(pBt);
     }
diff --git a/src/main.c b/src/main.c
index 8768bf661c..53b5c4472a 100644
--- a/src/main.c
+++ b/src/main.c
@@ -14,7 +14,7 @@
 ** other files are for internal use by SQLite and should not be
 ** accessed by users of the library.
 **
-** $Id: main.c,v 1.209 2004/06/09 12:30:06 danielk1977 Exp $
+** $Id: main.c,v 1.210 2004/06/09 20:03:09 drh Exp $
 */
 #include "sqliteInt.h"
 #include "os.h"
@@ -1033,6 +1033,9 @@ static int openDatabase(
   /* Open the backend database driver */
   if( zFilename[0]==':' && strcmp(zFilename,":memory:")==0 ){
     db->temp_store = 2;
+    db->nMaster = 0;    /* Disable atomic multi-file commit for :memory: */
+  }else{
+    db->nMaster = -1;   /* Size of master journal filename initially unknown */
   }
   rc = sqlite3BtreeFactory(db, zFilename, 0, MAX_PAGES, &db->aDb[0].pBt);
   if( rc!=SQLITE_OK ){
@@ -1161,4 +1164,3 @@ int sqlite3_create_collation16(
   sqliteFree(zName8);
   return rc;
 }
-
diff --git a/src/pager.c b/src/pager.c
index 50eedd80ae..814d7d6f16 100644
--- a/src/pager.c
+++ b/src/pager.c
@@ -18,7 +18,7 @@
 ** file simultaneously, or one process from reading the database while
 ** another is writing.
 **
-** @(#) $Id: pager.c,v 1.116 2004/06/09 19:03:55 drh Exp $
+** @(#) $Id: pager.c,v 1.117 2004/06/09 20:03:09 drh Exp $
 */
 #include "os.h"         /* Must be first to enable large file support */
 #include "sqliteInt.h"
@@ -1934,7 +1934,8 @@ static int pager_open_journal(Pager *pPager){
     rc = write32bits(&pPager->jfd, pPager->nMaster);
   }
   if( rc==SQLITE_OK ){
-    rc = sqlite3OsSeek(&pPager->jfd, 24 + pPager->nMaster);
+    sqlite3OsSeek(&pPager->jfd, 24 + pPager->nMaster - 1);
+    rc = sqlite3OsWrite(&pPager->jfd, "\000", 1);
   }
   if( pPager->stmtAutoopen && rc==SQLITE_OK ){
     rc = sqlite3pager_stmt_begin(pPager);
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 64cf766660..61998e9e3d 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -11,7 +11,7 @@
 *************************************************************************
 ** Internal interface definitions for SQLite.
 **
-** @(#) $Id: sqliteInt.h,v 1.275 2004/06/09 14:01:51 drh Exp $
+** @(#) $Id: sqliteInt.h,v 1.276 2004/06/09 20:03:09 drh Exp $
 */
 #include "config.h"
 #include "sqlite3.h"
@@ -422,6 +422,7 @@ struct sqlite {
   void *zErrMsg16;              /* Most recent error message (UTF-16 encoded) */
   u8 enc;                       /* Text encoding for this database. */
   u8 autoCommit;                /* The auto-commit flag. */
+  int nMaster;                  /* Length of master journal name. -1=unknown */
 };
 
 /*
diff --git a/src/vdbe.c b/src/vdbe.c
index 1390e6d306..c1707f3371 100644
--- a/src/vdbe.c
+++ b/src/vdbe.c
@@ -43,7 +43,7 @@
 ** in this file for details.  If in doubt, do not deviate from existing
 ** commenting and indentation practices when changing or adding code.
 **
-** $Id: vdbe.c,v 1.361 2004/06/09 09:55:19 danielk1977 Exp $
+** $Id: vdbe.c,v 1.362 2004/06/09 20:03:10 drh Exp $
 */
 #include "sqliteInt.h"
 #include "os.h"
@@ -2319,8 +2319,10 @@ case OP_Transaction: {
   pBt = db->aDb[i].pBt;
 
   if( pBt ){
-    int nMaster = strlen(sqlite3BtreeGetFilename(db->aDb[0].pBt))+11;
-    rc = sqlite3BtreeBeginTrans(pBt, pOp->p2, nMaster);
+    if( db->nMaster<0 ){
+      db->nMaster = strlen(sqlite3BtreeGetFilename(db->aDb[0].pBt))+20;
+    }
+    rc = sqlite3BtreeBeginTrans(pBt, pOp->p2, db->nMaster);
     if( rc==SQLITE_BUSY ){
         if( db->busyHandler.xFunc==0 ){
           p->pc = pc;
diff --git a/src/vdbeaux.c b/src/vdbeaux.c
index e97f99c69d..0486aca9c9 100644
--- a/src/vdbeaux.c
+++ b/src/vdbeaux.c
@@ -933,8 +933,12 @@ static int vdbeCommit(sqlite *db){
   /* The simple case - no more than one database file (not counting the TEMP
   ** database) has a transaction active.   There is no need for the
   ** master-journal.
+  **
+  ** if db->nMaster==0, it means the main database is :memory:.  In that case
+  ** we do not support atomic multi-file commits, so use the simple case then
+  ** too.
   */
-  if( nTrans<=100 ){  /**** FIX ME ****/
+  if( db->nMaster<=0 || nTrans<=1 ){
     for(i=0; rc==SQLITE_OK && i<db->nDb; i++){ 
       Btree *pBt = db->aDb[i].pBt;
       if( pBt ){
@@ -974,6 +978,7 @@ static int vdbeCommit(sqlite *db){
     }while( sqlite3OsFileExists(zMaster) );
 
     /* Open the master journal. */
+    assert( strlen(zMaster)<db->nMaster );
     rc = sqlite3OsOpenExclusive(zMaster, &master, 0);
     if( rc!=SQLITE_OK ){
       sqliteFree(zMaster);
@@ -988,16 +993,11 @@ static int vdbeCommit(sqlite *db){
     */
     for(i=0; i<db->nDb; i++){ 
       Btree *pBt = db->aDb[i].pBt;
+      if( i==1 ) continue;   /* Ignore the TEMP database */
       if( pBt && sqlite3BtreeIsInTrans(pBt) ){
         char const *zFile = sqlite3BtreeGetFilename(pBt);
-        rc = sqlite3OsWrite(&master, zFile, strlen(zFile));
-        if( rc!=SQLITE_OK ){
-          sqlite3OsClose(&master);
-          sqlite3OsDelete(zMaster);
-          sqliteFree(zMaster);
-          return rc;
-        }
-        rc = sqlite3OsWrite(&master, "\0", 1);
+        if( zFile[0]==0 ) continue;  /* Ignore :memory: databases */
+        rc = sqlite3OsWrite(&master, zFile, strlen(zFile)+1);
         if( rc!=SQLITE_OK ){
           sqlite3OsClose(&master);
           sqlite3OsDelete(zMaster);
@@ -1011,6 +1011,9 @@ static int vdbeCommit(sqlite *db){
     rc = sqlite3OsSync(&master);
     sqlite3OsClose(&master);
 
+    /* FIXME:  Sync the directory that contains the master journal to
+    ** make sure the i-node is up to date. */
+
     /* Sync all the db files involved in the transaction. The same call
     ** sets the master journal pointer in each individual journal. If
     ** an error occurs here, do not delete the master journal file.
diff --git a/test/pager2.test b/test/pager2.test
index 201631c6b2..cc38d2b477 100644
--- a/test/pager2.test
+++ b/test/pager2.test
@@ -11,7 +11,7 @@
 # This file implements regression tests for SQLite library.  The
 # focus of this script is page cache subsystem.
 #
-# $Id: pager2.test,v 1.1 2004/05/12 13:30:09 drh Exp $
+# $Id: pager2.test,v 1.2 2004/06/09 20:03:10 drh Exp $
 
 
 set testdir [file dirname $argv0]
@@ -122,7 +122,7 @@ do_test pager2-2.14 {
 } {0 {}}
 do_test pager2-2.15 {
   pager_stats $::p1
-} {ref 1 page 1 max 10 size 1 state 2 err 0 hit 1 miss 1 ovfl 0}
+} {ref 1 page 1 max 10 size 1 state 3 err 0 hit 1 miss 1 ovfl 0}
 do_test pager2-2.16 {
   page_read $::g1
 } {Page-One}
@@ -295,7 +295,7 @@ for {set i 1} {$i<20} {incr i} {
   do_test pager2-4.5.$i.1 {
     page_write $g1 "Page-1 v$i"
     lrange [pager_stats $p1] 8 9
-  } {state 2}
+  } {state 3}
   do_test pager2-4.5.$i.2 {
     for {set j 2} {$j<=20} {incr j} {
       set gx [page_get $p1 $j]
@@ -336,7 +336,7 @@ for {set i 1} {$i<20} {incr i} {
   do_test pager2-4.5.$i.5 {
     page_write $g1 "Page-1 v$i"
     lrange [pager_stats $p1] 8 9
-  } {state 2}
+  } {state 3}
   do_test pager2-4.5.$i.6 {
     for {set j 2} {$j<=20} {incr j} {
       set gx [page_get $p1 $j]