Learn how to resolve MySQL Error 1712 with troubleshooting steps. Fix this issue to restore your database functionality and ensure smooth operation of your MySQL server.
Table of Contents
Primary keys are unique values to identify the rows in a table within the MySQL database. They contain the indexes used to locate the information in the table. If these primary key indexes get corrupted due to any reason, then MySQL server fails to read them, leading to various errors. The error 1712 in MySQL is one such error that occurs due to corrupt primary indexes, index table names, etc. This error may prevent you from creating a backup of the MySQL database. It usually occurs while using a MySQL dump file to create backup.
In this post, we’ll discuss the ways to repair the corrupt indexes or table within the database. This will help fix the error. We’ll also mention a reliable MySQL database repair tool that can quickly and safely repair corrupt MySQL database tables.
What Causes Error 1712 (HY000) in MySQL?
The MySQL “Error 1712 (HY000): Index PRIMARY is corrupted while doing an online DDL operation” indicates issues with the primary key index. The primary key index can get damaged due to reasons, such as server overheating problems, hard drive issues in the system hosting MySQL Server, file system issues caused by malicious applications, etc.
Methods to Resolve Error 1712 (HY000) in MySQL
Sometimes, the error 1712 can occur if some other instances of MySQL are already running on the same port. You can restart the MySQL application to release the existing port (if any). Then, follow the methods below to repair the corrupt indexes or tables to fix the error 1712 in MySQL.
Method 1 – Use REPAIR TABLE Statement
Since the error 1712 is related to corruption in the table, you can use the REPAIR TABLE statement in MySQL to repair the primary key table. Before using the statement, make sure you know the affected table in the database. For this, you can check the error message. Usually, error messages specify the table name. Alternatively, you can also check the MySQL error logs. It contains information of the mysqlld startup and shutdown activities and error messages. Now, follow the below steps to repair the table:
Open the command prompt and login to MySQL using the below command:
mysql -u yourUserName -p yourPasswordHere, -u specifies the user’s name and -p is used for the password.
Then, run the REPAIR TABLE command (as given below):
REPAIR TABLE ‘sales’;This command will repair the affected table, named ‘sales’.
Method 2 – Repair Table with QUICK Option
If you need to repair only the corrupted indexes in the table, you can use the QUICK option with the REPAIR TABLE command. Here is the command:
REPAIR TABLE sales QUICK;Method 3 – Repair MySQL Tables with EXTENDED Option
You can use the EXTENDED option with the REPAIR TABLE command. It can repair the database table indexes and also the data file. This option can help in troubleshooting the errors that occurred due to corrupted tables in the MySQL database. The command is as follows:
REPAIR TABLE sales EXTENDED;Method 4 – Use the USE_FRM Option
MYI stores the indexes of tables in MySQL. To repair the corrupted .MYI file, you can use the repair command with the USE_FRM option. It recreates the index file with the data dictionary. Here is the command:
REPAIR TABLE sales USE_FRM;Method 5 – Use a Professional MySQL Repair Tool
If the above REPAIR TABLE commands fail to repair the corrupt tables in MySQL, you can opt for a professional third-party MySQL repair tool. Stellar Repair for MySQL is one such database repair tool you can use to repair corrupt tables in MySQL database. It can repair damaged indexes of InnoDB/MyISAM tables of MySQL. Before using this repair tool, make sure to stop the MySQL service. The tool is compatible with Windows and Linux operating systems. You can download the software’s free demo version to preview the repairable objects in the corrupted MySQL database.
Closure
You can encounter the MySQL error 1712 due to corrupt primary key index or .MYI file. You can use the REPAIR TABLE commands to repair the damaged tables to fix the error. If the commands fail to fix the issue, you can use a reliable MySQL database recovery software, such as Stellar Repair for MySQL. It can repair all the database objects, including corrupted primary key index, triggers, tables, etc., with complete integrity. The tool supports Linux (Ubuntu, Linux Mini, CentOS, and Red Hat Enterprise Linux) and all Windows versions.