MySQL 5.6.12 and many deadlock (2 replies)
Hello, We upgraded the MySQL server from 5.5 to 5.6.12, and we have many deadlock. Before upgrade we have one in a month, now we have about ten in a day. Anyone has any idea? Thanks
View ArticleRollback not working (2 replies)
I've discovered that my application's transactions aren't working; it doesn't rollback when there's an error. Rollbacks work fine when I run them from the workbench, but not when the application tries...
View Articlequery to list tables according to relationship (no replies)
what is the query to list all tables in a schema with relation? for example: schema_name table1 id name table2_id table2 id name table3 id name table2_id so that the result arrangement is : table2,...
View ArticleAdd index on same field as other index drops other index (no replies)
When I add an index that has the same fields as another existing index, the existing index disappears. I am trying to rename the indexes that are generated by creating an FK. MySQL 5.5.24 Here is...
View ArticleTable design (no replies)
Is this the right way to organize tables for the intended report on the left of this image? http://aasoftwares.net/zastructure.jpg thanks..
View Articlecase sensitive for table name references (no replies)
Friends The tables names are that format Ex: Products (Capitalized Case) When I dump my tables in Windows (my.ini lower_case_table_names=0), table references is lowercase. Why? How to resolve? Ex:...
View ArticleSUM for Multiple Table and Child Table (1 reply)
Please help me, I need to create JOIN syntax for this query : SELECT TblSupplier.SupplierName AS SupplierName, (SUM(TblBuy.TotalBuy) - SUM(TblReturn.TotalReturn)) AS Total,...
View ArticleProblem creating FK constraint (2 replies)
I'm getting an exception when creating a table with a foreign key, while a previous table creation with the same FK executes without error. The error I'm getting is: "Can't write; duplicate key in...
View ArticleCannot add foreign key constraint (1215) (2 replies)
Hi, I'm trying to create a foreign key constraint on a new table, but I keep seeing an error. I don't see what the problem is. Can anybody help me out? At least, how do I get more information to debug...
View Articleconditional table selection (1 reply)
i have problem while selecting table_name A B C 2 ab ab 2 bc bc 3 ac ac 4 as as this is my table and i want to execute select * from table_name only when it has more than 0 rows. if count(*)...
View Articleunlock row could not find a 4 mode lock on the record (2 replies)
Hi, Following error message appears in the log file of my 5.1.48 MySQL database: 130723 14:09:26 InnoDB: Error: unlock row could not find a 4 mode lock on the record The query generating this message...
View ArticleERROR 1005: Can't create table (errno: 150) (1 reply)
Hello, I am trying to create the following table create table messaInScena ( data date, ora time, spazio varchar(20), spettacolo varchar(40), postiDisponibili smallint, prezzoIntero decimal(5,2),...
View ArticlePermissions or Configuration or ? (no replies)
I have a perplexing problem. I inherited a challenging issue. Development Environment: Table: CustomerImage Type: MYISAM Columns: CustomerID (INT), Description VARCHAR(62), ImageData(LongBlob), etc....
View Articlehelp tracking down 'Waiting for table metadata lock' (3 replies)
Hi Folks, I'm relatively new to MySQL, and I have some Python unit tests (Python 3.3.1, MySQL Connector/Python 1.0.11) that are hanging when running against a local MySQL server ("Server version:...
View ArticleInnodb Error: the size of single-table tablespace file (1 reply)
Hi , my mysql server is 5.5.27, because of the disk issue the mysql shutdown. After 'fsck' fixed the disk , the mysql server cannot restart. The error log is as below. How to fix the problem and...
View Article"row size too large. the maximum row size for the used table type, not...
I'm using MySQL Comunity Edition 5.5 Windows Version and the the table is InnoDB. When I run the following update, i get the error "row size too large. the maximum row size for the used table type,...
View ArticleInnoDB wite activity is too high. (no replies)
Hello Everybody. I suspect that something weird is happening in my system (Percona 5.5 on CentOS 6). Disk write activity is constantly much higher than expected. Amazon Cloudwatch Write Bandwidth up...
View Articleibdata1 Recover Help (1 reply)
I was upgrading from MySQL 5.1 to 5.6 and I had dumped the databases from 5.1 into whatI thought was a good backup. Apparently, the backup process timed out without my knowledge, so when I went to...
View ArticleCreating sort index killing performance after converting from MyISAM (3 replies)
Hello Community, if have a big performance problem that i totally don't understand, so I need your help. I tried converting my vbulletin tables from MyISAM to InnoDB for performance reasons, but ended...
View ArticleMaximum number of InnoDB tables in schema (no replies)
Hello I have a database schema which is growing by up to 600 tables a day because of work currently being done. Each of these 600 tables is composed of up to 400 columns and each one has a unique...
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