diff --git a/include/libs/qworker/qworker.h b/include/libs/qworker/qworker.h
index 2be0561ce7940e2c17dd49d71f62486d80538fc0..60ed94d4de5a9c43dc64ba2041073eb67889608e 100644
--- a/include/libs/qworker/qworker.h
+++ b/include/libs/qworker/qworker.h
@@ -106,6 +106,8 @@ int32_t qWorkerProcessLocalQuery(void *pMgmt, uint64_t sId, uint64_t qId, uint64
 int32_t qWorkerProcessLocalFetch(void *pMgmt, uint64_t sId, uint64_t qId, uint64_t tId, int64_t rId, int32_t eId,
                                  void **pRsp, SArray *explainRes);
 
+int32_t qWorkerDbgEnableDebug(char *option);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/include/util/tdef.h b/include/util/tdef.h
index 85c89744ed88fdf27adb2795baf70028238906b6..ddd47edc02519902043a560beaee52020728c120 100644
--- a/include/util/tdef.h
+++ b/include/util/tdef.h
@@ -316,10 +316,10 @@ typedef enum ELogicConditionType {
 #define TSDB_MAX_KEEP_NS                (365 * 292 * 1440)  // data in db to be reserved.
 #define TSDB_DEFAULT_KEEP               (3650 * 1440)       // ten years
 #define TSDB_MIN_MINROWS_FBLOCK         10
-#define TSDB_MAX_MINROWS_FBLOCK         1000
+#define TSDB_MAX_MINROWS_FBLOCK         1000000
 #define TSDB_DEFAULT_MINROWS_FBLOCK     100
 #define TSDB_MIN_MAXROWS_FBLOCK         200
-#define TSDB_MAX_MAXROWS_FBLOCK         10000
+#define TSDB_MAX_MAXROWS_FBLOCK         10000000
 #define TSDB_DEFAULT_MAXROWS_FBLOCK     4096
 #define TSDB_MIN_FSYNC_PERIOD           0
 #define TSDB_MAX_FSYNC_PERIOD           180000  // millisecond
diff --git a/source/libs/catalog/src/ctgDbg.c b/source/libs/catalog/src/ctgDbg.c
index 6b870232c74bdb09dfd90bbb95a9cae8954f23da..5b17b548ccd58c03e2c3922b555a14340d5880fa 100644
--- a/source/libs/catalog/src/ctgDbg.c
+++ b/source/libs/catalog/src/ctgDbg.c
@@ -21,6 +21,8 @@
 extern SCatalogMgmt gCtgMgmt;
 SCtgDebug           gCTGDebug = {0};
 
+#if 0
+
 void ctgdUserCallback(SMetaData *pResult, void *param, int32_t code) {
   taosMemoryFree(param);
 
@@ -224,6 +226,7 @@ _return:
 
   CTG_RET(code);
 }
+#endif
 
 int32_t ctgdEnableDebug(char *option, bool enable) {
   if (0 == strcasecmp(option, "lock")) {
diff --git a/source/libs/catalog/src/ctgUtil.c b/source/libs/catalog/src/ctgUtil.c
index cd9380778b598080405ca569672e0c7b27d5fc72..9b013c2892d20a39d2be80dedb5c12d221c20425 100644
--- a/source/libs/catalog/src/ctgUtil.c
+++ b/source/libs/catalog/src/ctgUtil.c
@@ -1330,6 +1330,7 @@ static void* ctgCloneDnodeList(void* pSrc) { return taosArrayDup((const SArray*)
 
 static void ctgFreeDnodeList(void* p) { taosArrayDestroy((SArray*)((SMetaRes*)p)->pRes); }
 
+#if 0
 static int32_t ctgCloneMetaDataArray(SArray* pSrc, __array_item_dup_fn_t copyFunc, SArray** pDst) {
   if (NULL == pSrc) {
     return TSDB_CODE_SUCCESS;
@@ -1421,3 +1422,5 @@ void catalogFreeMetaData(SMetaData* pData) {
   taosMemoryFreeClear(pData->pSvrVer);
   taosMemoryFree(pData);
 }
+#endif
+
diff --git a/source/libs/qworker/src/qwDbg.c b/source/libs/qworker/src/qwDbg.c
index 0ab501ddd5abe806f62ef611900df1455b716e9f..b8d5d2e6eee3d76f96b458afd6a4043a4e5e685b 100644
--- a/source/libs/qworker/src/qwDbg.c
+++ b/source/libs/qworker/src/qwDbg.c
@@ -271,7 +271,7 @@ void qwDbgSimulateDead(QW_FPARAMS_DEF, SQWTaskCtx *ctx, bool *rsped) {
   }
 }
 
-int32_t qwDbgEnableDebug(char *option) {
+int32_t qWorkerDbgEnableDebug(char *option) {
   if (0 == strcasecmp(option, "lock")) {
     gQWDebug.lockEnable = true;
     qError("qw lock debug enabled");
diff --git a/tests/script/tsim/query/explain.sim b/tests/script/tsim/query/explain.sim
index eb6b102bd9a8d85352dc1312d906fcbabb22b960..2a8f07178804a166fc9e4c0e2163840825bd4459 100644
--- a/tests/script/tsim/query/explain.sim
+++ b/tests/script/tsim/query/explain.sim
@@ -4,7 +4,7 @@ system sh/exec.sh -n dnode1 -s start
 sql connect
 
 print ======== step1
-sql create database db1 vgroups 3;
+sql create database db1 vgroups 3 cachesize 10 cachemodel 'both';
 sql use db1;
 sql select * from information_schema.ins_databases;
 sql create stable st1 (ts timestamp, f1 int, f2 binary(200)) tags(t1 int);
@@ -60,6 +60,15 @@ sql explain verbose true select * from information_schema.ins_stables where db_n
 sql explain verbose true select st1.f1 from st1 join st2 on st1.ts=st2.ts and st1.f1 > 0;
 sql explain verbose true insert into t1(ts) select st1.f1 from st1 join st2 on st1.ts=st2.ts and st1.f1 > 0;
 sql explain verbose true insert into t1(ts, t1) select _wstart, count(*) from st1 interval(10s);
+sql explain verbose true select distinct tbname, table_name from information_schema.ins_tables;
+sql explain verbose true select diff(f1) as f11 from tb1 order by f11;
+sql explain verbose true select count(*) from st1 where ts > now - 3m and ts < now interval(10s) fill(linear);
+sql explain verbose true select count(*) from st1 partition by tbname;
+sql explain verbose true select count(*) from information_schema.ins_tables group by stable_name;
+sql explain verbose true select last(*) from st1;
+sql explain verbose true select last_row(*) from st1;
+sql explain verbose true select interp(f1) from tb1 where ts > now - 3m and ts < now range(now-3m,now) every(1m) fill(prev);
+sql explain verbose true select _wstart, _wend, count(*) from tb1 EVENT_WINDOW start with f1 > 0 end with f1 < 10;
 
 print ======== step4
 sql explain analyze select ts from st1 where -2;
@@ -96,6 +105,13 @@ sql explain analyze verbose true select * from information_schema.ins_stables wh
 sql explain analyze verbose true select * from (select min(f1),count(*) a from st1 where f1 > 0) where a < 0;
 sql explain analyze verbose true select count(f1) from st1 group by tbname;
 sql explain analyze verbose true select st1.f1 from st1 join st2 on st1.ts=st2.ts and st1.f1 > 0;
+sql explain analyze verbose true select diff(f1) as f11 from tb1 order by f11;
+sql explain analyze verbose true select count(*) from st1 where ts > now - 3m and ts < now interval(10s) fill(linear);
+sql explain analyze verbose true select count(*) from information_schema.ins_tables group by stable_name;
+sql explain analyze verbose true select last(*) from st1;
+sql explain analyze verbose true select last_row(*) from st1;
+sql explain analyze verbose true select interp(f1) from tb1 where ts > now - 3m and ts < now range(now-3m,now) every(1m) fill(prev);
+sql explain analyze verbose true select _wstart, _wend, count(*) from tb1 EVENT_WINDOW start with f1 > 0 end with f1 < 10;
 
 #not pass case
 #sql explain verbose true select count(*),sum(f1) as aa from tb1 where (f1 > 0 or f1 < -1) and ts > '2020-10-31 00:00:00' and ts < '2021-10-31 00:00:00' order by aa;
diff --git a/tests/script/tsim/show/basic.sim b/tests/script/tsim/show/basic.sim
index cae7a66589bac72c352ed855902f3b23bb798046..8990e492fa9aa3805cc8427827484958a7fc4aaf 100644
--- a/tests/script/tsim/show/basic.sim
+++ b/tests/script/tsim/show/basic.sim
@@ -244,5 +244,15 @@ if $rows <= 0 then
   return -1
 endi
 
+sql show cluster alive;
+if $rows <= 0 then
+  return -1
+endi
+
+sql show db.alive;
+if $rows <= 0 then
+  return -1
+endi
+
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
 system sh/exec.sh -n dnode2 -s stop -x SIGINT