diff --git a/backUpDB.sh b/backUpDB.sh
index 4d7685b..32d3d4b 100755
--- a/backUpDB.sh
+++ b/backUpDB.sh
@@ -11,18 +11,29 @@ hostName=$(echo $HOSTNAME)
 
 PATH=PATH:/usr/bin:/usr/sbin:/usr/local/bin
 
+check_port() {
+    nc -z -w5 $dbHost $dbPort
+}
 
 cd /tmp
-rm ${hostName}_${dbName}.sql_bak3.tar.gz || true
-mv ${hostName}_${dbName}.sql_bak2.tar.gz ${dbName}.sql_bak3.tar.gz  || true
-mv ${hostName}_${dbName}.sql_bak1.tar.gz ${dbName}.sql_bak2.tar.gz || true
-mv ${hostName}_${dbName}.sql.tar.gz ${dbName}.sql_bak1.tar.gz || true
+rm ${hostName}_${dbName}.sql_bak3.tar.gz -f || true
+mv ${hostName}_${dbName}.sql_bak2.tar.gz ${dbName}.sql_bak3.tar.gz -f  || true
+mv ${hostName}_${dbName}.sql_bak1.tar.gz ${dbName}.sql_bak2.tar.gz -f || true
+mv ${hostName}_${dbName}.sql.tar.gz ${dbName}.sql_bak1.tar.gz -f || true
 
 sed -i 's/lower_case_table_names=1/lower_case_table_names=0/g' /root/mysql/conf/append.cnf
-docker restart maria
-/usr/bin/mysqldump -R --opt --protocol=TCP --user=${dbUser} --password=${dbPassword} --host=${dbHost} --port=${dbPort} ${dbName}  > ${hostName}_${dbName}.sql
+if check_port; then
+    echo "端口 $dbPort 是活跃的，一切正常。"
+else
+    echo "警告：端口 $dbPort 不活跃，请检查数据库连接。"
+    docker restart maria
+    sleep 10
+fi
+/usr/bin/mysqldump -R --opt --protocol=TCP --user="${dbUser}" --password="${dbPassword}" --host="${dbHost}" --port=${dbPort} ${dbName}  > /tmp/${hostName}_${dbName}.sql
 sed -i 's/lower_case_table_names=0/lower_case_table_names=1/g' /root/mysql/conf/append.cnf
-docker restart maria
+
+
+
 rm sql -fr || true
 mkdir sql
 mv ${hostName}_${dbName}.sql sql
@@ -30,4 +41,4 @@ tar -czvf ${hostName}_${dbName}.sql.tar.gz sql
 
 cp /tmp/${hostName}_${dbName}.sql.tar.gz ${backUpPath} -f
 #echo "ossPath: "${ossPath}
-#ossutil cp ${dbName}.sql.tar.gz oss://${ossPath}/ -f
+#ossutil cp ${dbName}.sql.tar.gz oss://${ossPath}/ -