diff --git a/src/client/src/TSDBJNIConnector.c b/src/client/src/TSDBJNIConnector.c
index fec239ef9c..459b180881 100644
--- a/src/client/src/TSDBJNIConnector.c
+++ b/src/client/src/TSDBJNIConnector.c
@@ -192,7 +192,7 @@ JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_setOptions(JNIEnv
     const char *tz1 = (*env)->GetStringUTFChars(env, optionValue, NULL);
     if (tz1 && strlen(tz1) != 0) {
       res = taos_options(TSDB_OPTION_TIMEZONE, tz1);
-      jniTrace("set timezone to %s, result:%d", timezone, res);
+      jniTrace("set timezone to %s, result:%d", tz1, res);
     } else {
       jniTrace("input timezone is empty");
     }
@@ -385,7 +385,7 @@ JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_getAffectedRowsIm
   }
 
   jint ret = taos_affected_rows((SSqlObj *)res);
-  jniTrace("jobj:%p, conn:%p, sql:%p, affect rows:%d", jobj, tscon, (void *)con, res, ret);
+  jniTrace("jobj:%p, conn:%p, sql:%p, res: %p, affect rows:%d", jobj, tscon, (void *)con, (void *)res, ret);
 
   return ret;
 }
@@ -411,10 +411,10 @@ JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_getSchemaMetaData
   // jobject arrayListObj = (*env)->NewObject(env, g_arrayListClass, g_arrayListConstructFp, "");
 
   if (num_fields == 0) {
-    jniError("jobj:%p, conn:%p, resultset:%p, fields size is %d", jobj, tscon, res, num_fields);
+    jniError("jobj:%p, conn:%p, resultset:%p, fields size is %d", jobj, tscon, (void *)res, num_fields);
     return JNI_NUM_OF_FIELDS_0;
   } else {
-    jniTrace("jobj:%p, conn:%p, resultset:%p, fields size is %d", jobj, tscon, res, num_fields);
+    jniTrace("jobj:%p, conn:%p, resultset:%p, fields size is %d", jobj, tscon, (void *)res, num_fields);
     for (int i = 0; i < num_fields; ++i) {
       jobject metadataObj = (*env)->NewObject(env, g_metadataClass, g_metadataConstructFp);
       (*env)->SetIntField(env, metadataObj, g_metadataColtypeField, fields[i].type);
@@ -465,7 +465,7 @@ JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_fetchRowImp(JNIEn
   int         num_fields = taos_num_fields(result);
 
   if (num_fields == 0) {
-    jniError("jobj:%p, conn:%p, resultset:%p, fields size is %d", jobj, tscon, res, num_fields);
+    jniError("jobj:%p, conn:%p, resultset:%p, fields size is %d", jobj, tscon, (void *)res, num_fields);
     return JNI_NUM_OF_FIELDS_0;
   }
 
@@ -473,7 +473,7 @@ JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_fetchRowImp(JNIEn
   if (row == NULL) {
     int tserrno = taos_errno(result);
     if (tserrno == 0) {
-      jniTrace("jobj:%p, conn:%p, resultset:%p, fields size is %d, fetch row to the end", jobj, tscon, res, num_fields);
+      jniTrace("jobj:%p, conn:%p, resultset:%p, fields size is %d, fetch row to the end", jobj, tscon, (void *)res, num_fields);
       return JNI_FETCH_END;
     } else {
       jniTrace("jobj:%p, conn:%p, interruptted query", jobj, tscon);