diff --git a/classes/db/DBMysql.class.php b/classes/db/DBMysql.class.php
index 7ec19b22c..8bc7ab0e6 100644
--- a/classes/db/DBMysql.class.php
+++ b/classes/db/DBMysql.class.php
@@ -177,11 +177,13 @@
          * @brief 1씩 증가되는 sequence값을 return (mysql의 auto_increment는 sequence테이블에서만 사용)
          **/
         function getNextSequence() {
-            $query = sprintf("insert into `%ssequence` (seq) values ('')", $this->prefix);
+            $query = sprintf("insert into `%ssequence` (seq) values ('0')", $this->prefix);
             $this->_query($query);
             $sequence = mysql_insert_id();
-            $query = sprintf("delete from  `%ssequence` where seq < %d", $this->prefix, $sequence);
-            $this->_query($query);
+            if($seqnece % 10000 == 0) {
+              $query = sprintf("delete from  `%ssequence` where seq < %d", $this->prefix, $sequence);
+              $this->_query($query);
+            }
 
             return $sequence;
         }
diff --git a/classes/db/DBMysql_innodb.class.php b/classes/db/DBMysql_innodb.class.php
index 0c6dc539e..1acba1805 100644
--- a/classes/db/DBMysql_innodb.class.php
+++ b/classes/db/DBMysql_innodb.class.php
@@ -186,11 +186,13 @@
          * @brief 1씩 증가되는 sequence값을 return (mysql의 auto_increment는 sequence테이블에서만 사용)
          **/
         function getNextSequence() {
-            $query = sprintf("insert into `%ssequence` (seq) values ('')", $this->prefix);
+            $query = sprintf("insert into `%ssequence` (seq) values ('0')", $this->prefix);
             $this->_query($query);
             $sequence = mysql_insert_id();
-            $query = sprintf("delete from  `%ssequence` where seq < %d", $this->prefix, $sequence);
-            $this->_query($query);
+            if($seqnece % 10000 == 0) {
+              $query = sprintf("delete from  `%ssequence` where seq < %d", $this->prefix, $sequence);
+              $this->_query($query);
+            }
 
             return $sequence;
         }
diff --git a/classes/db/DBSqlite2.class.php b/classes/db/DBSqlite2.class.php
index 0f4f1d227..d0e7dda18 100644
--- a/classes/db/DBSqlite2.class.php
+++ b/classes/db/DBSqlite2.class.php
@@ -175,8 +175,10 @@
             $query = sprintf("insert into %ssequence (seq) values ('')", $this->prefix);
             $this->_query($query);
             $sequence = sqlite_last_insert_rowid($this->fd);
-            $query = sprintf("delete from  %ssequence where seq < %d", $this->prefix, $sequence);
-            $this->_query($query);
+            if($seqnece % 10000 == 0) {
+              $query = sprintf("delete from  %ssequence where seq < %d", $this->prefix, $sequence);
+              $this->_query($query);
+            }
 
             return $sequence;
         }
diff --git a/classes/db/DBSqlite3_pdo.class.php b/classes/db/DBSqlite3_pdo.class.php
index e831a13d2..9a1d37a0f 100644
--- a/classes/db/DBSqlite3_pdo.class.php
+++ b/classes/db/DBSqlite3_pdo.class.php
@@ -196,9 +196,11 @@
             $this->_prepare($query);
             $result = $this->_execute();
             $sequence = $this->handler->lastInsertId();
-            $query = sprintf("delete from  %ssequence where seq < %d", $this->prefix, $sequence);
-            $this->_prepare($query);
-            $result = $this->_execute();
+            if($seqnece % 10000 == 0) {
+              $query = sprintf("delete from  %ssequence where seq < %d", $this->prefix, $sequence);
+              $this->_prepare($query);
+              $result = $this->_execute();
+            }
 
             return $sequence;
         }