diff --git a/make/common/db/registry.sql b/make/common/db/registry.sql
index d3412223a..762a20acf 100644
--- a/make/common/db/registry.sql
+++ b/make/common/db/registry.sql
@@ -43,7 +43,7 @@ create table user (
 # The mark of deleted user is "#user_id".
 # The 11 consist of 10 for the max value of user_id(4294967295)  
 # in MySQL and 1 of '#'.
- username varchar(32),
+ username varchar(255),
 # 11 bytes is reserved for marking the deleted users.
  email varchar(255),
  password varchar(40) NOT NULL,
@@ -99,7 +99,7 @@ insert into project_member (project_id, user_id, role, creation_time, update_tim
 
 create table access_log (
  log_id int NOT NULL AUTO_INCREMENT,
- username varchar (32) NOT NULL,
+ username varchar (255) NOT NULL,
  project_id int NOT NULL,
  repo_name varchar (256), 
  repo_tag varchar (128),
@@ -142,7 +142,7 @@ create table replication_target (
  id int NOT NULL AUTO_INCREMENT,
  name varchar(64),
  url varchar(64),
- username varchar(40),
+ username varchar(255),
  password varchar(128),
  /*
  target_type indicates the type of target registry,
diff --git a/make/common/db/registry_sqlite.sql b/make/common/db/registry_sqlite.sql
index 257176788..21028859c 100644
--- a/make/common/db/registry_sqlite.sql
+++ b/make/common/db/registry_sqlite.sql
@@ -38,7 +38,7 @@ create table user (
  The 11 consist of 10 for the max value of user_id(4294967295)  
  in MySQL and 1 of '#'.
 */
- username varchar(32),
+ username varchar(255),
 /*
  11 bytes is reserved for marking the deleted users.
 */
@@ -96,7 +96,7 @@ insert into project_member (project_id, user_id, role, creation_time, update_tim
 
 create table access_log (
  log_id INTEGER PRIMARY KEY,
- username varchar (32) NOT NULL,
+ username varchar (255) NOT NULL,
  project_id int NOT NULL,
  repo_name varchar (256), 
  repo_tag varchar (128),
@@ -137,7 +137,7 @@ create table replication_target (
  id INTEGER PRIMARY KEY,
  name varchar(64),
  url varchar(64),
- username varchar(40),
+ username varchar(255),
  password varchar(128),
  /*
  target_type indicates the type of target registry,
diff --git a/src/common/dao/accesslog.go b/src/common/dao/accesslog.go
index b99cd7bbf..c0f716fdc 100644
--- a/src/common/dao/accesslog.go
+++ b/src/common/dao/accesslog.go
@@ -22,6 +22,12 @@ import (
 
 // AddAccessLog persists the access logs
 func AddAccessLog(accessLog models.AccessLog) error {
+	// the max length of username in database is 255, replace the last
+	// three charaters with "..." if the length is greater than 256
+	if len(accessLog.Username) > 255 {
+		accessLog.Username = accessLog.Username[:252] + "..."
+	}
+
 	o := GetOrmer()
 	_, err := o.Insert(&accessLog)
 	return err