innodb table free space (1 reply)
I have a question about autoextending an innodb table space (i use mysql 4.1.x version). I noticed that autoextending happens when the table reaches less than 4096kB free space (show table status like...
View ArticleStrange Locking problems (1 reply)
Hi! Quite often my Server hangs and MySQL shows the following process list: Process 1: Time: 24 User: Worker Status: Locked Info: LOCK TABLES tRatings WRITE, tUsers WRITE Process 2: Time: 24 User:...
View ArticleMySQL crashed when about 350,000 records were being deleted (1 reply)
I was trying to delete about 350,000 records from table and the whole MySQL server crashed when the deletion was being processed. Then I realized there were a few indexes in this table, which might...
View ArticleRestoring from InnoDB backup by copying files (1 reply)
Hi all. I believe that it is possible to make a backup of my InnoDB tables simply by copying the data files, provided that MySQL is shut-down first (I have innodb_file_per_table enabled). However,...
View ArticleHuge InnoDb (>4TB) concerns (2 replies)
Hello, for a scientific test application, we have been using MySQL. So far, our database has grown above 4TB and we expect it to grow around 30Gbite per day for some more time (years). We use innodb,...
View Articlefaster null alter/table rebuilds (3 replies)
I have several innodb tables, reaching around 100G each, replication is in place, so i can take down a server when needed. However what i i'm trying to figure out is if there is a faster way to run...
View Articleproblem about MVCC (no replies)
i read the "High performance MySQL", it has a text about MVCC,and i try to understand it by example,so here is first examle one: ============================================================ session A...
View Articleenable barkley db can represent problems? (2 replies)
Hi, when I was installing mysql-5.1.48-linux-x86_64-glibc23 tar ball, especifically when I needed to run mysql_intall_db, I faced the following problem: 100407 12:13:24 [ERROR]...
View ArticleInnoDB vs MyIsam (1 reply)
I have read that MyISAM is much faster for SELECT's. I'm building web site for car classifieds so i have a database with 80 000 listings for testing. I'm running the next query SELECT a.id as...
View Article1054 (42S22): Unknown column 'testType$testSubtypeid2' in 'where clause' at...
I have the two following tables CREATE TABLE `testType$testSubtype` ( `id1` bigint(20) NOT NULL, `id2` bigint(20) NOT NULL, PRIMARY KEY (`id1`,`id2`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8...
View ArticleRollback time (1 reply)
I'm running a really big update on about 150 million rows in an innodb table. It's taken about 3 hours and I can see from undo count that it's about halfway. What I'd like to know if how long it would...
View Articleinnodb ibdata file creation (1 reply)
HI All, 1). i have ibdata1 file which is huge round 385 gb and i want to create new ibdata file. 2). and as soon as file(ibdata) reaches 1gb it will create new ibdata file automatically. how can i do...
View ArticleVarchar does it cause data file to continously grow (1 reply)
Hi I am using the innodb_plugin 1.0.9 (MySQL 5.1.48) If I use varchar does innodb reclaim space in the innodb data file. Or can it only do this with char? My concern is that if I use varchar i will be...
View ArticleHow to remove specific rows, based on their "page"? (2 replies)
I'm seeing a crash on one of my InnoDB tables that indicates there's a bad table index (or something like that). I haven't been able to find much about my error online, but the little I see indicates...
View ArticleCannot add or update a child row: a foreign key constraint fails (2 replies)
Hi everyone , I have two tables namely users & roles. users include users_id(primary key),users_name,users_email,roles_id(foreign key) roles include roles_id(primary key),roles_name. Both tables...
View Article8GB of RAM Configuration for Innodb (1 reply)
guys, can you help me on my pc server running on 8GB of RAM and on icore 5 processor i not confident on my settings (too low)... can you give me atleast to compare or a superb configurations to...
View ArticleDifferent ibdata files for every database (12 replies)
HI All, Actually i want to create different ibdata (data file) files for each database i have . suppose i have two different databases 1. MyDatabase1 and 2. MyDatabase2 i want to create two different...
View ArticleInnoDB log sequence numbers in the future (1 reply)
Hi there, After having problems setting up replication between boxes, one of which had a system time which was completely wrong (which could be a red herring), I'm getting lots of log entries like...
View ArticleLock wait timeout exceeded (1 reply)
Hey, I'm currently working on an application in Java that requires me to handle deadlocks properly. I've discovered the best practice for the error: 1213 - Deadlock found when trying to get lock .. is...
View Articleupgrading to innodb plugin (4 replies)
Hello guys Can someone explain to me: when upgrading to Innodb plugin, do existing mysql inndob tables get converted to the new innodb plugin format or I have to mysqldump them and completely recreate...
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