diff --git a/ext/misc/tmstmpvfs.c b/ext/misc/tmstmpvfs.c
index 6f1af36f74..b39d01e65d 100644
--- a/ext/misc/tmstmpvfs.c
+++ b/ext/misc/tmstmpvfs.c
@@ -11,7 +11,7 @@
 ******************************************************************************
 **
 ** This file implements a VFS shim that writes a timestamp and other tracing
-** information into 16 byts of reserved space at the end of each page of the
+** information into 16 bytes of reserved space at the end of each page of the
 ** database file.
 **
 ** The VFS also tries to generate log-files with names of the form:
@@ -180,12 +180,13 @@
 **
 **   ELOG_WAL_PAGE        "New page added to the WAL file"
 **                        op = 0x03
-**                        a1 = 1 if last page of a txn.  0 otherwise.
+**                        a1 = 0x1 set if last page of txn. 0x2 if all zeros
 **                        a2 = page number in the DB file
 **                        a3 = frame number in the WAL file
 **
 **   ELOG_DB_PAGE         "Database page updated using rollback mode"
 **                        op = 0x04
+**                        a1 = 0x2 set if all zeros
 **                        a2 = page number in the DB file
 **
 **   ELOG_CKPT_START      "Start of a checkpoint operation"
@@ -193,6 +194,7 @@
 **
 **   ELOG_CKPT_PAGE       "Page xfer from WAL to database"
 **                        op = 0x06
+**                        a1 = 0x2 set if all zeros
 **                        a2 = database page number
 **                        a3 = frame number in the WAL file
 **
@@ -601,6 +603,17 @@ static int tmstmpRead(
   return rc;
 }
 
+/*
+** Return 0x02 if all bytes of zBuf are zero.  Return 0x00 if one
+** or more bytes are non-zero.
+*/
+static u8 tmstmpAllZero(const void *zBuf, int n){
+  const u8 *a = (const u8*)zBuf;
+  int i;
+  for(i=0; i<n; i++){ if( a[i] ) return 0x00; }
+  return 0x02;
+}
+
 /*
 ** Write data to a tmstmp-file.
 */
@@ -627,29 +640,32 @@ static int tmstmpWrite(
       p->iOfst = iOfst;
     }else if( iAmt>=512 && iOfst==p->iOfst+24 ){
       unsigned char s[TMSTMP_RESERVE];
+      u8 a1 = tmstmpAllZero(zBuf,iAmt-TMSTMP_RESERVE);
       memset(s, 0, TMSTMP_RESERVE);
       tmstmpPutTS(p, s+2);
-      tmstmpEvent(p, ELOG_WAL_PAGE, p->isCommit, p->pgno, p->iFrame, s+2);
+      tmstmpEvent(p, ELOG_WAL_PAGE, p->isCommit|a1, p->pgno, p->iFrame, s+2);
     }else if( iAmt==32 && iOfst==0 ){
       p->salt1 = tmstmpGetU32(((const u8*)zBuf)+16);
       tmstmpEvent(p, ELOG_WAL_RESET, 0, 0, p->salt1, 0);
     }
   }else if( p->inCkpt ){
     unsigned char *s = (unsigned char*)zBuf+iAmt-TMSTMP_RESERVE;
+    u8 a1 = tmstmpAllZero(zBuf,iAmt-TMSTMP_RESERVE);
     memset(s, 0, TMSTMP_RESERVE);
     tmstmpPutTS(p, s+2);
     tmstmpPutU32(p->iFrame, s+8);
     tmstmpPutU32(p->pPartner->salt1 & 0xffffff, s+12);
     assert( p->pgsz>0 );
-    tmstmpEvent(p, ELOG_CKPT_PAGE, 0, (iOfst/p->pgsz)+1, p->iFrame, 0);
+    tmstmpEvent(p, ELOG_CKPT_PAGE, a1, (iOfst/p->pgsz)+1, p->iFrame, 0);
   }else if( p->pPartner==0 ){
     /* Writing into a database in rollback mode */
     unsigned char *s = (unsigned char*)zBuf+iAmt-TMSTMP_RESERVE;
+    u8 a1 = tmstmpAllZero(zBuf,iAmt-TMSTMP_RESERVE);
     memset(s, 0, TMSTMP_RESERVE);
     tmstmpPutTS(p, s+2);
     s[12] = 2;
     assert( p->pgsz>0 );
-    tmstmpEvent(p, ELOG_DB_PAGE, 0, (u32)(iOfst/p->pgsz)+1, 0, s+2);
+    tmstmpEvent(p, ELOG_DB_PAGE, a1, (u32)(iOfst/p->pgsz)+1, 0, s+2);
   }
   return pSub->pMethods->xWrite(pSub,zBuf,iAmt,iOfst);
 }
diff --git a/manifest b/manifest
index 1f5eaa239e..b824f534d2 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Improved\shandling\sof\sOOM\sconditions\sin\sthe\ssessions\sextension.\n[bugs:/info/2026-08-25T17:04:14Z|Bug\s2026-08-25T17:04:14Z].
-D 2026-08-25T18:40:50.288
+C Enhance\sthe\stmstmpvfs.c\sextension\sso\sthat\sit\stags\szero\spages\sin\sthe\slog\sfile.
+D 2026-08-26T12:31:34.750
 F .fossil-settings/binary-glob 61195414528fb3ea9693577e1980230d78a1f8b0a54c78cf1b9b24d0a409ed6a x
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
@@ -408,7 +408,7 @@ F ext/misc/stmt.c b090086cd6bd6281c21271d38d576eeffe662f0e6b67536352ce32bbaa4383
 F ext/misc/stmtrand.c 1c7c6a478e9c808d53a2efa9a744c86c265b6b95b4a96964e1b960c7c642ad49
 F ext/misc/strdup.c 028ea3097c7b6bb8cb9f0b7e656e9bafe6c46db76123e9ad86fb3efda629b568
 F ext/misc/templatevtab.c e76d4cdb73f986c8165c0fe7831f1a94da55d4f1eafcb7d377e1b0b79ee8679a
-F ext/misc/tmstmpvfs.c 240caad4441328dc52bd2871f48811db46dff858d5598030e389176837a2f4df
+F ext/misc/tmstmpvfs.c 8fe8b10e0ac7c46faf491811e21dcb67ccde5cff8f133701121f793d2a7d41e4
 F ext/misc/totype.c ba11aac3c0b52c685bd25aa4e0f80c41c624fb1cc5ab763250e09ddc762bc3a8
 F ext/misc/uint.c 327afc166058acf566f33a15bf47c869d2d3564612644d9ff81a23efc8b36039
 F ext/misc/unionvtab.c fe1011f185408b0afd1631fdce8090c4e69ff4eae10a760101e08b624f53bcb1
@@ -2192,7 +2192,7 @@ F tool/showjournal.c 5bad7ae8784a43d2b270d953060423b8bd480818
 F tool/showlocks.c 9cc5e66d4ebbf2d194f39db2527ece92077e86ae627ddd233ee48e16e8142564
 F tool/showshm.c a0ab6ec32dd1f11218ca2a4018f8fb875b59414801ab8ceed8b2e69b7b45a809
 F tool/showstat4.c b706fcbc4cd1a6e4a73ac32549afc4b460479d650402d64b23e8d813516e8de4
-F tool/showtmlog.c 2e9da6c4b4767113a0ad5ddabd4337ea100d38ff9c7fee260f9ccdefb2ffdc23
+F tool/showtmlog.c 86b2dcb722f2c23f0fb59800c086913561428b4be700b7236480f6a9a3726e4a
 F tool/showwal.c 11eca547980a066b081f512636151233350ac679f29ecf4ebfce7f4530230b3d
 F tool/soak1.tcl a3892082ed1079671565c044e93b55c3c7f38829aedf53cc597c65d23ffdaddf
 F tool/spaceanal.tcl 1f83962090a6b60e1d7bf92495d643e622bef9fe82ea3f2d22350dcbce9a12d0
@@ -2219,8 +2219,8 @@ F tool/warnings-clang.sh bbf6a1e685e534c92ec2bfba5b1745f34fb6f0bc2a362850723a9ee
 F tool/warnings.sh a554d13f6e5cf3760f041b87939e3d616ec6961859c3245e8ef701d1eafc2ca2
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
 F tool/winmain.c 00c8fb88e365c9017db14c73d3c78af62194d9644feaf60e220ab0f411f3604c
-P 08b34b1656b7dec2328345bb8ea93d75193703aaff52546fc17844b7110b2741
-R 903486fe44ab30495ec0c438ae6f872d
+P ce2aa9f8495edfa361220c4702a54035e9df78984ce6c9fff40e04bd45cc3393
+R f7ef5c62909643d5337acbde4db70895
 U drh
-Z 80938bf97b7cdc45995ac8caba2302af
+Z 3bc7da1960aa01e911e5d014c47c686b
 # Remove this line to create a well-formed Fossil manifest.
diff --git a/manifest.uuid b/manifest.uuid
index cb612cd3b7..13e16a3a49 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-ce2aa9f8495edfa361220c4702a54035e9df78984ce6c9fff40e04bd45cc3393
+e9d649b77b14990cdc5440e08fdace6989737f3fd1acfc8b1c1bb72be7022ec0
diff --git a/tool/showtmlog.c b/tool/showtmlog.c
index 4c35b777be..034777d16e 100644
--- a/tool/showtmlog.c
+++ b/tool/showtmlog.c
@@ -80,47 +80,47 @@ static void renderCSV(int iFile, unsigned char *a){
   for(a3=0, j=12; j<=15; j++) a3 = (a3<<8)+a[j];
   switch( a[0] ){
     case 0x01: {
-      printf("\"open-db\",%u,,,,\r\n",a2);
+      printf("\"open-db\",%u,,,,,0\r\n",a2);
       break;
     }
     case 0x02: {
-      printf("\"open-wal\",%u,,,,\r\n", a2);
+      printf("\"open-wal\",%u,,,,,0\r\n", a2);
       break;
     }
     case 0x03: {
-      printf("\"wal-page\",,%u,%u,,%d\r\n", a2, a3, a[1]);
+      printf("\"wal-page\",,%u,%u,,%d,%d\r\n", a2, a3, a[1]&1, (a[1]>>1)&1);
       break;
     }
     case 0x04: {
-      printf("\"db-page\",,%u,,,\r\n", a2);
+      printf("\"db-page\",,%u,,,,%d\r\n", a2,(a[1]>>1)&1);
       break;
     }
     case 0x05: {
-      printf("\"ckpt-start\",,,,,\r\n");
+      printf("\"ckpt-start\",,,,,,0\r\n");
       break;
     }
     case 0x06: {
-      printf("\"ckpt-page\",,%u,%u,,\r\n", a2, a3);
+      printf("\"ckpt-page\",,%u,%u,,%d\r\n", a2, a3, (a[1]>>1)&1);
       break;
     }
     case 0x07: {
-      printf("\"ckpt-end\",,,,,\r\n");
+      printf("\"ckpt-end\",,,,,,0\r\n");
       break;
     }
     case 0x08: {
-      printf("\"wal-reset\",,,,%u,\r\n", a3);
+      printf("\"wal-reset\",,,,%u,,0\r\n", a3);
       break;
     }
     case 0x0e: {
-      printf("\"close-wal\",,,,,\r\n");
+      printf("\"close-wal\",,,,,,0\r\n");
       break;
     }
     case 0x0f: {
-      printf("\"close-db\",,,,,\r\n");
+      printf("\"close-db\",,,,,,0\r\n");
       break;
     }
     default: {
-      printf("\"invalid-record\",,,,,\r\n");
+      printf("\"invalid-record\",,,,,,0\r\n");
       break;
     }
   }
@@ -147,12 +147,12 @@ static void renderText(unsigned char *a){
       break;
     }
     case 0x03: {
-      printf("wal-page  pgno %-8u frame %-8u%s\n", a2, a3,
-             a[1]==1 ? " txn" : "");
+      static const char *za1[4] = { "", " txn", " zero", " txn zero" };
+      printf("wal-page  pgno %-8u frame %-8u%s\n", a2, a3, za1[a[1]&3]);
       break;
     }
     case 0x04: {
-      printf("db-page   pgno %-8u\n", a2);
+      printf("db-page   pgno %-8u%s\n", a2, (a[1]&2)!=0 ? " zero" : "");
       break;
     }
     case 0x05: {
@@ -160,7 +160,8 @@ static void renderText(unsigned char *a){
       break;
     }
     case 0x06: {
-      printf("ckpt-page pgno %-8u frame %-8u\n", a2, a3);
+      printf("ckpt-page pgno %-8u frame %-8u%s\n", a2, a3,
+             (a[1]&2)!=0 ? " zero" : "");
       break;
     }
     case 0x07: {
@@ -227,7 +228,7 @@ int main(int argc, char **argv){
   }
   iFile = 0;
   if( bCSV ){
-    printf("tmstmp,fileno,op,pid,pgno,frame,salt,txn\r\n");
+    printf("tmstmp,fileno,op,pid,pgno,frame,salt,txn,zero\r\n");
   }
   for(i=1; i<argc; i++){
     z = argv[i];