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mysqldump: unable to backup database
Posted by: Richard Stevens
Date: April 08, 2017 06:13AM

Hi all,

I'm having a problem to backup my database. Error message is shown below. Please advise.

This is the error message:
MariaDB [db_test]> mysqldump db_test > db_test.sql;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'mysqldump db_test > db_test.sql' at line 1
MariaDB [db_test]>

MariaDB [db_test]> status
--------------
mysql Ver 15.1 Distrib 10.0.17-MariaDB, for Linux (i686) using readline 5.1

Connection id: 32
Current database: db_test
Current user: root@localhost
SSL: Not in use
Current pager: less -EM
Using outfile: ''
Using delimiter: ;
Server: MariaDB
Server version: 10.0.17-MariaDB Source distribution
Protocol version: 10
Connection: Localhost via UNIX socket
Insert id: 1
Server characterset: latin1
Db characterset: latin1
Client characterset: latin1
Conn. characterset: latin1
UNIX socket: /var/run/mysqld/mysqld.sock
Uptime: 1 hour 38 min 46 sec

Threads: 2 Questions: 187 Slow queries: 0 Opens: 14 Flush tables: 1 Open tables: 4 Queries per second avg: 0.031
--------------

MariaDB [db_test]>

This is how I created the database.
MariaDB [(none)]> SHOW DATABASES;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
+--------------------+
3 rows in set (0.00 sec)

MariaDB [(none)]>
MariaDB [(none)]> CREATE DATABASE db_test;
Query OK, 1 row affected (0.00 sec)

MariaDB [(none)]>
MariaDB [(none)]> SHOW DATABASES;
+--------------------+
| Database |
+--------------------+
| db_test |
| information_schema |
| mysql |
| performance_schema |
+--------------------+
4 rows in set (0.00 sec)

MariaDB [(none)]>
MariaDB [(none)]> USE db_test
Database changed
MariaDB [db_test]> SHOW TABLES;
Empty set (0.00 sec)

MariaDB [db_test]> CREATE TABLE user (id int(11) not null PRIMARY KEY AUTO_INCREMENT, first varchar(128) not null, last varchar(128) not null, uid varchar(128) not null, pwd varchar(1000) not null );
Query OK, 0 rows affected (0.00 sec)

MariaDB [db_test]>

MariaDB [db_test]> SHOW COLUMNS FROM user;
+-------+---------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------+---------------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| first | varchar(128) | NO | | NULL | |
| last | varchar(128) | NO | | NULL | |
| uid | varchar(128) | NO | | NULL | |
| pwd | varchar(1000) | NO | | NULL | |
+-------+---------------+------+-----+---------+----------------+
5 rows in set (0.00 sec)

MariaDB [db_test]>

MariaDB [db_test]> SELECT * FROM user;
Empty set (0.00 sec)

MariaDB [db_test]>

MariaDB [db_test]> INSERT INTO user (id, first , last , uid , pwd) VALUES (null , 'John' , 'Doe' , 'admin' , '123');
Query OK, 1 row affected (0.00 sec)

MariaDB [db_test]> SELECT * FROM user;
+----+-------+------+-------+-----+
| id | first | last | uid | pwd |
+----+-------+------+-------+-----+
| 1 | John | Doe | admin | 123 |
+----+-------+------+-------+-----+
1 row in set (0.00 sec)

MariaDB [db_test]>

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mysqldump: unable to backup database
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April 08, 2017 06:13AM


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