diff --git a/src/util/src/tutil.c b/src/util/src/tutil.c
index 52f70bdf5e3a4f6bead0f4e93e4c8c2fe342968a..989273e0515e7c1affdd3ff9afe747688923270f 100644
--- a/src/util/src/tutil.c
+++ b/src/util/src/tutil.c
@@ -416,12 +416,12 @@ void getTmpfilePath(const char *fileNamePrefix, char *dstPath) {
 #else
   char *tmpDir = "/tmp/";
 #endif
-  
+  int64_t ts = taosGetTimestampUs();
   strcpy(tmpPath, tmpDir);
   strcat(tmpPath, tdengineTmpFileNamePrefix);
   strcat(tmpPath, fileNamePrefix);
-  strcat(tmpPath, "-%llu-%u");
-  snprintf(dstPath, PATH_MAX, tmpPath, taosGetPthreadId(), atomic_add_fetch_32(&tmpFileSerialNum, 1));
+  strcat(tmpPath, "-%d-%"PRIu64"-%u-%"PRIu64);
+  snprintf(dstPath, PATH_MAX, tmpPath, getpid(), taosGetPthreadId(), atomic_add_fetch_32(&tmpFileSerialNum, 1), ts);
 }
 
 int tasoUcs4Compare(void* f1_ucs4, void *f2_ucs4, int bytes) {
diff --git a/tests/pytest/import_merge/importBlock1H.py b/tests/pytest/import_merge/importBlock1H.py
index a1ba905b173b52a835488a6f0151587729d9e1d7..aef29444d6dc5197cb2670806808447c8567b1dc 100644
--- a/tests/pytest/import_merge/importBlock1H.py
+++ b/tests/pytest/import_merge/importBlock1H.py
@@ -34,7 +34,7 @@ class TDTestCase:
 
         tdSql.execute('reset query cache')
         tdSql.execute('drop database if exists db')
-        tdSql.execute('create database db cache 512')
+        tdSql.execute('create database db cache 128')
         tdSql.execute('use db')
 
         tdLog.info("================= step1")
diff --git a/tests/pytest/import_merge/importBlock1HO.py b/tests/pytest/import_merge/importBlock1HO.py
index 73aec07a9038f3e10350ef10e3da1d2acfbc2a4f..ad4bcf128839ea2e2ddc6c8857b38ce0f53e7a79 100644
--- a/tests/pytest/import_merge/importBlock1HO.py
+++ b/tests/pytest/import_merge/importBlock1HO.py
@@ -34,7 +34,7 @@ class TDTestCase:
 
         tdSql.execute('reset query cache')
         tdSql.execute('drop database if exists db')
-        tdSql.execute('create database db cache 512')
+        tdSql.execute('create database db cache 128')
         tdSql.execute('use db')
 
         tdLog.info("================= step1")
diff --git a/tests/pytest/import_merge/importBlock1HPO.py b/tests/pytest/import_merge/importBlock1HPO.py
index ad224e5c65ea4703ef54e06bffa33a65f817d705..6aabc035ec8a530f3f710600b4dc163e9e8fe791 100644
--- a/tests/pytest/import_merge/importBlock1HPO.py
+++ b/tests/pytest/import_merge/importBlock1HPO.py
@@ -34,7 +34,7 @@ class TDTestCase:
 
         tdSql.execute('reset query cache')
         tdSql.execute('drop database if exists db')
-        tdSql.execute('create database db cache 512')
+        tdSql.execute('create database db cache 128')
         tdSql.execute('use db')
 
         tdLog.info("================= step1")
diff --git a/tests/pytest/import_merge/importBlock1S.py b/tests/pytest/import_merge/importBlock1S.py
index 37c2ad663190622520a6e9c4c9a2d7af59c7be44..4b2adfb961a51a09f2e2b83521cd2f3adee72d05 100644
--- a/tests/pytest/import_merge/importBlock1S.py
+++ b/tests/pytest/import_merge/importBlock1S.py
@@ -34,7 +34,7 @@ class TDTestCase:
 
         tdSql.execute('reset query cache')
         tdSql.execute('drop database if exists db')
-        tdSql.execute('create database db cache 512')
+        tdSql.execute('create database db cache 128')
         tdSql.execute('use db')
 
         tdLog.info("================= step1")
diff --git a/tests/pytest/import_merge/importBlock1Sub.py b/tests/pytest/import_merge/importBlock1Sub.py
index 5228563651883ccca70e4132edee055912cf8bbd..343b87c7570c00fc48bbfec6393705ff46439732 100644
--- a/tests/pytest/import_merge/importBlock1Sub.py
+++ b/tests/pytest/import_merge/importBlock1Sub.py
@@ -34,7 +34,7 @@ class TDTestCase:
 
         tdSql.execute('reset query cache')
         tdSql.execute('drop database if exists db')
-        tdSql.execute('create database db cache 512')
+        tdSql.execute('create database db cache 128')
         tdSql.execute('use db')
 
         tdLog.info("================= step1")
diff --git a/tests/pytest/import_merge/importBlock1T.py b/tests/pytest/import_merge/importBlock1T.py
index 75f41b98cfbee136d8f147736f8765fa4b82eddb..40f4bbfdecceab83a8846ab8224dc734cda8206a 100644
--- a/tests/pytest/import_merge/importBlock1T.py
+++ b/tests/pytest/import_merge/importBlock1T.py
@@ -34,7 +34,7 @@ class TDTestCase:
 
         tdSql.execute('reset query cache')
         tdSql.execute('drop database if exists db')
-        tdSql.execute('create database db cache 512')
+        tdSql.execute('create database db cache 128')
         tdSql.execute('use db')
 
         tdLog.info("================= step1")
diff --git a/tests/pytest/import_merge/importBlock1TO.py b/tests/pytest/import_merge/importBlock1TO.py
index b43428da27900e57754f2095d001ea2f80d67acb..db8b036d6fb86a633781119b26eae88bba96e5f1 100644
--- a/tests/pytest/import_merge/importBlock1TO.py
+++ b/tests/pytest/import_merge/importBlock1TO.py
@@ -34,7 +34,7 @@ class TDTestCase:
 
         tdSql.execute('reset query cache')
         tdSql.execute('drop database if exists db')
-        tdSql.execute('create database db cache 512')
+        tdSql.execute('create database db cache 128')
         tdSql.execute('use db')
 
         tdLog.info("================= step1")
diff --git a/tests/pytest/import_merge/importBlock1TPO.py b/tests/pytest/import_merge/importBlock1TPO.py
index 913ca1cc0230d56c7970b1648a7cdde80cff612e..f2361712e7c33feb643b17a4b1e81f73da5e7c10 100644
--- a/tests/pytest/import_merge/importBlock1TPO.py
+++ b/tests/pytest/import_merge/importBlock1TPO.py
@@ -34,7 +34,7 @@ class TDTestCase:
 
         tdSql.execute('reset query cache')
         tdSql.execute('drop database if exists db')
-        tdSql.execute('create database db cache 512')
+        tdSql.execute('create database db cache 128')
         tdSql.execute('use db')
 
         tdLog.info("================= step1")
diff --git a/tests/pytest/import_merge/importBlock2H.py b/tests/pytest/import_merge/importBlock2H.py
index bacd88cbe793d0c0a1139b3ae72f6b294a37b997..62552980bd481e7c0fa234709210200d591453ec 100644
--- a/tests/pytest/import_merge/importBlock2H.py
+++ b/tests/pytest/import_merge/importBlock2H.py
@@ -34,7 +34,7 @@ class TDTestCase:
 
         tdSql.execute('reset query cache')
         tdSql.execute('drop database if exists db')
-        tdSql.execute('create database db cache 512')
+        tdSql.execute('create database db cache 128')
         tdSql.execute('use db')
 
         tdLog.info("================= step1")
diff --git a/tests/pytest/import_merge/importBlock2HO.py b/tests/pytest/import_merge/importBlock2HO.py
index 01c0f622b62cf25eb9f66b7f95f1e2b829fd6030..0f53210f4ab276734380be985054e5d0fdc22c0c 100644
--- a/tests/pytest/import_merge/importBlock2HO.py
+++ b/tests/pytest/import_merge/importBlock2HO.py
@@ -34,7 +34,7 @@ class TDTestCase:
 
         tdSql.execute('reset query cache')
         tdSql.execute('drop database if exists db')
-        tdSql.execute('create database db cache 512')
+        tdSql.execute('create database db cache 128')
         tdSql.execute('use db')
 
         tdLog.info("================= step1")
diff --git a/tests/pytest/import_merge/importBlock2HPO.py b/tests/pytest/import_merge/importBlock2HPO.py
index ee8d580dfe90a5d4ad0cf3f4e198ba63b050325b..3b7ffbbe4434b69d6350532678292a28e19a1859 100644
--- a/tests/pytest/import_merge/importBlock2HPO.py
+++ b/tests/pytest/import_merge/importBlock2HPO.py
@@ -34,7 +34,7 @@ class TDTestCase:
 
         tdSql.execute('reset query cache')
         tdSql.execute('drop database if exists db')
-        tdSql.execute('create database db cache 512')
+        tdSql.execute('create database db cache 128')
         tdSql.execute('use db')
 
         tdLog.info("================= step1")
diff --git a/tests/pytest/import_merge/importBlock2S.py b/tests/pytest/import_merge/importBlock2S.py
index d85074bfeb0e34b81a222fa52c3ebd06c5bd16ab..69b029183983b2e22903cb3fd5c150e6c173a049 100644
--- a/tests/pytest/import_merge/importBlock2S.py
+++ b/tests/pytest/import_merge/importBlock2S.py
@@ -34,7 +34,7 @@ class TDTestCase:
 
         tdSql.execute('reset query cache')
         tdSql.execute('drop database if exists db')
-        tdSql.execute('create database db cache 512')
+        tdSql.execute('create database db cache 128')
         tdSql.execute('use db')
 
         tdLog.info("================= step1")
diff --git a/tests/pytest/import_merge/importBlock2Sub.py b/tests/pytest/import_merge/importBlock2Sub.py
index deb1dc83373fdcd03ec758aeb91ff6aab3b17a4d..5b937505840f4cc1f4e9a86ea74bb2f932cf8657 100644
--- a/tests/pytest/import_merge/importBlock2Sub.py
+++ b/tests/pytest/import_merge/importBlock2Sub.py
@@ -34,7 +34,7 @@ class TDTestCase:
 
         tdSql.execute('reset query cache')
         tdSql.execute('drop database if exists db')
-        tdSql.execute('create database db cache 512')
+        tdSql.execute('create database db cache 128')
         tdSql.execute('use db')
 
         tdLog.info("================= step1")
diff --git a/tests/pytest/import_merge/importBlock2T.py b/tests/pytest/import_merge/importBlock2T.py
index ded698d28c282aa5b304c088e2b11cefb1efcbed..0d9b70299d9aa8292278547d02cdcf66a9b0edaf 100644
--- a/tests/pytest/import_merge/importBlock2T.py
+++ b/tests/pytest/import_merge/importBlock2T.py
@@ -34,7 +34,7 @@ class TDTestCase:
 
         tdSql.execute('reset query cache')
         tdSql.execute('drop database if exists db')
-        tdSql.execute('create database db cache 512')
+        tdSql.execute('create database db cache 128')
         tdSql.execute('use db')
 
         tdLog.info("================= step1")
diff --git a/tests/pytest/import_merge/importBlock2TO.py b/tests/pytest/import_merge/importBlock2TO.py
index ffc88c2c999b51e83d6024c6b05e6b36f87ffc14..fe57308c4266530a73a0be80b5fa38866c4a84de 100644
--- a/tests/pytest/import_merge/importBlock2TO.py
+++ b/tests/pytest/import_merge/importBlock2TO.py
@@ -34,7 +34,7 @@ class TDTestCase:
 
         tdSql.execute('reset query cache')
         tdSql.execute('drop database if exists db')
-        tdSql.execute('create database db cache 512')
+        tdSql.execute('create database db cache 128')
         tdSql.execute('use db')
 
         tdLog.info("================= step1")
diff --git a/tests/pytest/import_merge/importBlock2TPO.py b/tests/pytest/import_merge/importBlock2TPO.py
index 8b6c70c32be0190b32cc5ccf2f8df64906522b2e..4da52bd3f45ffc407b9c2199829fd128d250118b 100644
--- a/tests/pytest/import_merge/importBlock2TPO.py
+++ b/tests/pytest/import_merge/importBlock2TPO.py
@@ -34,7 +34,7 @@ class TDTestCase:
 
         tdSql.execute('reset query cache')
         tdSql.execute('drop database if exists db')
-        tdSql.execute('create database db cache 512')
+        tdSql.execute('create database db cache 128')
         tdSql.execute('use db')
 
         tdLog.info("================= step1")
diff --git a/tests/pytest/import_merge/importBlockbetween.py b/tests/pytest/import_merge/importBlockbetween.py
index c3482b37763a12b8a36e406421cffe22ea724f3b..eea7f7ea7c014f886f2ee3b02211c19e534c6158 100644
--- a/tests/pytest/import_merge/importBlockbetween.py
+++ b/tests/pytest/import_merge/importBlockbetween.py
@@ -34,7 +34,7 @@ class TDTestCase:
 
         tdSql.execute('reset query cache')
         tdSql.execute('drop database if exists db')
-        tdSql.execute('create database db cache 512')
+        tdSql.execute('create database db cache 128')
         tdSql.execute('use db')
 
         tdLog.info("================= step1")
diff --git a/tests/pytest/import_merge/importToCommit.py b/tests/pytest/import_merge/importToCommit.py
index 3684dde049ff0185c3bde7ff50886c3e24ce55fe..b1a0065d476b06e1192c0600b02e77c3324435b7 100644
--- a/tests/pytest/import_merge/importToCommit.py
+++ b/tests/pytest/import_merge/importToCommit.py
@@ -33,7 +33,7 @@ class TDTestCase:
         tdDnodes.start(1)
         tdSql.execute('reset query cache')
         tdSql.execute('drop database if exists db')
-        tdSql.execute('create database db cache 512 maxtables 10')
+        tdSql.execute('create database db cache 128 maxtables 10')
         tdSql.execute('use db')
 
         tdLog.info("================= step1")