innodb monitor

when plugin is loaded * / int(*deinit) (void*);/ * The function to invoke when plugin is unloaded * / unsigned intVersion/* Plugin version (for i_s.plugins) */ structSt_mysql_show_var *status_vars;structSt_mysql_sys_var **system_vars;void* __RESERVED1;/ * reserved for dependency checking * / unsigned LongFlags/ * Flags for plugin * /}; This is the INIT function pointer. This innobase_init () function is called when the plugin is not loaded.The Innobase_init () function calls the In

The following articles mainly introduce the differences between the MySQL storage engine (InnoDB) and MyISAM, including evaluation, evaluation, and related performance tests, the following is a detailed description of the article, hoping to help you in this regard. Introduction to InnoDB and MyISAM: This is the default type, which is based on the traditional ISAM type, ISAM The following articles mainly int

culprit for blocking? We can view it through the show InnoDB status\g command (shown InnoDB status in the future version of MySQL will be replaced by "engine InnoDB status") But show InnoDB status\g command display results, a screen is not necessarily displayed under, also is not conducive to real-time, continuous mo

How to disable the innodb engine in mysql5.5 and mysq5.6 today we found that a backup mysql data folder has become abnormal. I found three more files: ibdata1 ib_logfile0 ib_logfile1, the former 18 m, the last two 5 MB data were migrated from mysql5.0 to 5.5 during migration, while 5.5 disabled innodb and started up, so I started innodb,

First, determine the version View MySQL version Copy Code code as follows: Mysql-v Or you can log in to MySQL using select version (); or status; Command view Ii. Commencement of work Close MySQL Copy Code code as follows: Service MySQL Stop If the above command cannot close MySQL, use the kill-9 command to force the kill process; To modify the MySQL profile my.cnf (usually located in/etc/mysql/my.cnf), add the following fields For MySQL 5.5: Cop

I suddenly received an alarm from MySQL. I crashed from the database and restarted continuously. I opened the error log and found that a table was broken. If the innodb table is damaged, you cannot use commands such as repairtable to repair myisam. Now, record the solution process and we will not be so confused next time. Handling process: After an alarm is triggered, the error log is directly opened, I suddenly received an alarm from MySQL. I crashed

MySQL database innodb cannot be restarted after startup, mysqlinnodb Problem description The computer crashes during use. After the computer restarts, it finds that mysql is not successfully started. Check the error log and find that the innodb problem causes mysql to fail to start. Error Log $ mysql.server startStarting MySQL. ERROR! The server quit without updating PID file (/usr/local/var/mysql/fdipzoned

Let us answer some of the following questions: Do you have a foreign key in your database? Do you need business support? Do you need full-text indexing? What kind of query mode do you often use? How big is your data? Thinking about these issues can help you find the right direction, but that's not absolute. If you need a transaction or a foreign key, then InnoDB may be a better way. If you need Full-text indexing, then MyISAM is usually a good choic

bits, index ' PRIMARY ' of table ' mytest '. ' T4 ' Trx ID 270881 lock_mode X locks Rec but Not gap Recordlock, heap No 2 physical record:n_fields 4; Compact format; Info bits 0 0:len 4; Hex 80000001; ASC;; 1:len 6; Hex 00000004221c; ASC ";; 2:len 7; Hex 9a000001530110; ASC S;; 3:len 4; Hex 80000001; ASC;; TABLE locktable ' mytest '. ' T3 ' TRX ID 270881 lock mode is RECORDLOCKS Space ID 3 n bits of the index ' PRIMARY ' of table ' mytest '. ' T3 ' TRX ID 270881 lock mode S locks Gap before R

The company's MySQL architecture has recently been upgraded, from the original one of the main more from the Drbd+heartbeat double master from, just have a new E-commerce site project will be online, with the Drbd+heartbeat dual-master one from, Since this process is still different from the previous MyISAM engine, it is summed up here: 1 MySQL replication process is an asynchronous synchronization process, not complete master-slave synchronization, so the process of synchronization is delayed,

Description of MyISAM and InnoDB: InnoDB and MyISAM are the two most common table types used by many people when using MySQL. The two table types have their own advantages and disadvantages, depending on the specific application. The basic difference is that the MyISAM type does not support advanced processing such as transaction processing, while the InnoDB type

Today, I found that the mysql DATA folder with a backup has become abnormal. I found that there are three more files: ibdata1 ib_logfile0 ib_logfile1, the former is 18 m, and the latter two are 5 m each, it turned out that the migration was from mysql5.0 to 5.5 during the migration, but 5.5 was not able to start innodb, so I started innodb. Because innodb will ad

It was originally used for installation. Therefore, when setting database usage (for example, 1), follow the official discuz suggestions, all selected are Non-Transactional Database Only (Only Non-transaction databases of MyISAM data engine are supported). InnoDB is not required for MyISAM databases, so INNODB engine is not directly loaded. Later, I was working on WordPress. I didn't know that WordPress was

Converting MySQL from MyISAM to InnoDB errors and solutions bitsCN.com was later working on WordPress. at the beginning, I still did not know that WordPress was using the InnoDB data engine, so I built a database in the original database, and I didn't find any problems at the beginning. it was okay to install and import SQL statements. I didn't think much at the time. The problem is that one more WordPress

By default, the parameters of the InnoDB are set very small and are not enough in the production environmentFor example, the two most important parametersInnodb_buffer_pool_size default is 8MInnodb_flush_logs_at_trx_commit The default setting is 1, which is synchronous flush log (so to understand)Innodb_buffer_pool_size: This is the most important setting for InnoDB, which has a decisive impact on

Tags: Define SQL statement update via DEX restricted archive mem ComparisonMySQL has two storage engines: InnoDB and MyISAM, and the following table is a simple comparison of the two engines MyISAM InnoDB The difference in composition: Each myisam is stored as three files on disk. The first file name begins with the name of the table, and the extension indicat

Tags: bytes include current cells pool style PAC width sts Innodb_buffer_pool_pages_data Innodb the number of pages in the buffer pool that contain data, including dirty pages. Unit is page. Innodb_buffer_pool_pages_dirty InnoDB the number of dirty pages in the buffer pool cache. Unit is page. Innodb_buffer_pool_pages_flushed InnoDB the number of

Mysql> Show engine InnoDB status\g1. Row ***************************Type:innodbName:Status:=====================================131226 17:12:38 INNODB MONITOR OUTPUT=====================================Per second averages calculated from the last seconds----the state of the database in the past 55 seconds-----------------BACKGROUND THREAD-----------------Srv_mast

MySQL has two storage engines:InnoDB and MyISAM, and the following table is a simple comparison of the two engines MyISAM InnoDB The difference in composition: Each myisam is stored as three files on disk. The first file name begins with the name of the table, and the extension indicates the file type.The. frm file stores the table definition.The data file has an extension of. MYD (MYData).The extension of t

Tags: cannot table operation add PLM begin ext Concurrent rollback row MySQL has two storage engines:InnoDB and MyISAM, and the following table is a simple comparison of the two engines MyISAM InnoDB The difference in composition: Each myisam is stored as three files on disk. The first file name begins with the name of the table, and the extension indicates the file type.The. frm file stores the table de