primary key which does not create gap index bottleneck on insert (1 reply)
I have a lot of tables that currently use an increasing bigint integral number as the primary surrogate key. I also use read_committed primarily throughout my application. My reading of the mysql...
View ArticleDeadLock issue in MultiThreading due to foreign key constraint. (1 reply)
Problem Statement :- we created Entitlement(Parent Record) and its corresponding LineItem(Child, also have parent in same table). We update Entitlement, delete lineItem and insert new lineItem with...
View ArticleMYSQL Crash on building Full Text Search Index (no replies)
I need help and Guidance. I am using XAMPP local server. I tried to create a Full Text search index using below command: ALTER TABLE corp_news ADD FULLTEXT INDEX `corp_nz` (`content` ASC, `subject`...
View ArticleCould you explain about ALGORITHM=INPLACE? (1 reply)
Hi, Alter table ... algorithm=inplace ? Alter table ... algorithm=copy ? what is difference between inplace and copy? Could you explain about it more detail ? Thanks.
View Articlewhere is transaction pool located in mysql ? (no replies)
Hi, Where is transaction pool located in mysql ? MySQL 5.7 introduced for Taransaction pool. ---------------------------------------------------------- Fixed chunks of 4MB each Ordered on address,...
View ArticleHow to reduce ibtmp1 file in mysql 5.7? (1 reply)
Hi! After updating to mysql 5.6 to 5.7, and appeared despite innodb_max_undo_log_size = 50M in the config file it takes a few minutes all the available space on the server. How can I fix it?
View Articletaking long time to ALTER the table (no replies)
Hi, I am using MySQL 5.7 version (InnoDB). In one of my table, data having nearly 4200000 and if i want add columns then it is taking long time to ALTER the table. Kindly tell me what is the best...
View ArticleAUTO INCREMENT ERROR (1 reply)
Hello, I work under linux and I have problem to insert data in a table. When I create with the command line the table "test" with the code below, all is OK : CREATE TABLE `test` ( `test_id` int(11)...
View ArticleServer going away after a few seconds (no replies)
I am losing connection and get 'server gone away' after only a few seconds after retrieving records
View Articledeadlock: a row being locked by a query twice? (no replies)
I have got one and only one occurrence of MySQL deadlock which I have not been able to find a reason for. I would like to know: 1) Why did this deadlock occur? Something wrong with schema/query? 2)...
View ArticleStrange Foreign key error (3 replies)
Hi I'm using foreign key since 15 years ago with other SGDB But i'm a little new with mysql So there is a trouble that does not happen on other SGBD Got 2 tables 1 parent and 1 child CREATE TABLE...
View ArticleCan't restore Database (3 replies)
I made a backup of a database with mysqldump. When I want to restore it I get the following error: ERROR 1114 (HY000) at line 2374: The table 'innodb_buffer_page' is full. Server version:...
View ArticleXA transaction isolation level and ACID properties (1 reply)
http://dev.mysql.com/doc/refman/5.7/en/xa.html warns that "However, for a distributed transaction, you must use the SERIALIZABLE isolation level to achieve ACID properties. It is enough to use...
View ArticleFull text search setting default to add + sign in every search (no replies)
Hi guys, I'm new to this forum. This is my first time using full text search and I was wondering if their is a configuration to set the default in every search the (+) sign. Say I search for words: *...
View ArticleMySQL 5.7 buffer pool improvments (1 reply)
Hi, MySQL 5.7 improves MySQL 5.7 for buffer pool features ------------------------------------------------------------------------ Faster flush list traversal Improve flush and LRU list rescanning...
View Articlemysqldump error 'PAGE_CHECKSUM=1 ROW_FORMAT=DYNAMIC' (1 reply)
I try to make a mysqldumd via ssh to an second server. Unfortunately I now get this error: ERROR 1064 (42000) at line 4771: You have an error in your SQL syntax; check the manual that corresponds to...
View Articlehow to set namespace for new innodb memcache (1 reply)
How can we create a namespace for the new innoDB memcache and setting the key values to that namespace
View ArticleHigh CPU usage by mysql process (9 replies)
Hi, On a dedicated server (Specifications below), Ubuntu 15.04, lighttpd. I have a problem with a high CPU usage of mysql process. In "htop" usage of mysql process is jumping from 0% to 500%. On the...
View ArticleSeveral "Lock wait timeout exceeded; try restarting the transcation" (1 reply)
Hi all, I'm very new to Mysql, though very comfortable with Oracle rdbms. Users are reporting several errors regarding this message: "Lock wait timeout exceeded; try restarting the transcation" I've...
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