diff --git a/backUpDB.sh b/backUpDB.sh
index c9116c2..2747afe 100755
--- a/backUpDB.sh
+++ b/backUpDB.sh
@@ -17,9 +17,9 @@ check_port() {
 
 cd /tmp
 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
+mv ${hostName}_${dbName}.sql_bak2.tar.gz ${hostName}_${dbName}.sql_bak3.tar.gz -f  || true
+mv ${hostName}_${dbName}.sql_bak1.tar.gz ${hostName}_${dbName}.sql_bak2.tar.gz -f || true
+mv ${hostName}_${dbName}.sql.tar.gz ${hostName}_${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
 if check_port; then