5.6 Adding new index, it does not get used (3 replies)
I am trying to add a new index to an InnoDB table with only three columns, which are: id (PK) name (varchar(255)) other_id (varchar(255)) id is of course an index, name is also indexed, but I want an...
View Articleservice crashed while executing UDF (no replies)
Every time one of the UDF functionality is been executed , mysql crash with the follwing the error log UTC - mysqld got signal 11 ; This could be because you hit a bug. It is also possible that this...
View ArticleCould I disable redo log in SSD? (2 replies)
redo log's purpose is to crash recovery and reduce random disk access,since SSD has a high random IOPS,why not just disable redo log?Some person may argue if crash happens.I think could let database...
View Articlequery works in 5.6 but not working in 5.7 (7 replies)
I have this query that work in 5.6 but now I have a new server with 5.7, I moved the Data Bases with SQL Yog I used "copy to different.." then some querys not working. SELECT SALDO.* FROM ( SELECT...
View ArticleInvalid default value (3 replies)
When I execute this statement: CREATE TABLE MG_FOLDER ( UUID CHAR(24) NOT NULL, NAME VARCHAR(100), OWNER VARCHAR(32), CREATED TIMESTAMP, MODIFIED TIMESTAMP, ARCH BOOLEAN, FOLDER_UUID CHAR(24), SERIAL...
View ArticleData Directory is not moving subpartition (3 replies)
I am experimenting with partitioning a very large (100M rows) table across multiple disks to get the space and improve throughput. I installed, formatted and mounted two 1TB SAS disks as /db1 and /db2...
View ArticleIncredible slow down... Why? (1 reply)
Hy, A customer has a DB, that I backed up. I dropped the schema into my PC, and restored that DB. I saw that some rows, added into my PC, made verifies, copied that rows into another tables, backed up...
View ArticleInnoDB compression - in-page modification log (no replies)
I've read that to improve compression, InnoDB append uncompressed data to a modification log in the compressed page (before finally recompressing). My question is, what happens when the page needs to...
View ArticleImporting Data with Single .ibd file (no replies)
I have one ".ibd" file with me. I have configured my local Database server with FILE_PER_TABLE option. i have two question here. 1. When i was trying to restore/import the IBD file, the engine expect...
View Articlecannot connect to my databases anymore (no replies)
As you might already think, I'm a noob and I'm really desperate. I had this ibdata1 file with over 13 GB. I read that if I'd add innodb_file_per_table to the [mysqld] section of my.cnf, data wouldn't...
View ArticleInnoDB recovery (1 reply)
Hi Everyone I really need some help so basically I deleted a table, but before I did I took the idb and frm file from that table. I've moved those files over to another server along with ALL the other...
View Articleinnodb_ft_max_token_size (no replies)
Hi, My local version is 5.6.10 and here I able to change the size of innodb_ft_max_token_size upto 252, but when I tried the same in version 5.6.15 on my production server its not get changing. If I...
View ArticleForeign Key problems (no replies)
Hello, I am new at using MySQL. I am using Innodb, and Workbench, and I am having foreign key problems. I am using Workbench, trying to make a simple genealogy database, with and PEOPLE table for...
View ArticleFastest engine for Mass Updates (only updates done on table) (1 reply)
I have a table of 2 columns and 60 million rows. I want to update the table by incrementing one field by 1 on various different rows (This is the only type of operation that will ever be done on the...
View ArticleMysql hangs once in 2 days with mysterious deadlock? (1 reply)
Hi! I am running a mysql for almost a year, and a month ago it started to freeze with bunch of semaphores waiting for the locks. I think it is a bug in mysql because I do not use transactions - only...
View ArticleSQLException: Cannot execute statement in a READ ONLY transaction. (no replies)
This issue we are continuosly getting with pointing the master/slave replication. Could you please help me out. Note: When we run the same application in mysql 5.5.27 it's working fine but after i...
View ArticleMysql 1050 Error “Table already exists” when in fact, it does not (no replies)
I am getting the following error on Linux box which is a live data box. The table infact existed earlier. not it is nor seen in he DB. Whenever I am trying to create or import from the backup, I am...
View ArticleERROR InnoDB : The OS said file flush did not succeed - with number 5 and 105...
Greetings We use 5.6.15 common edition at a Linux Centos 6.4 box (at VMWare). Since yesterday - we experience almost every hour a failure of MySQL processes, with following errors : …. 2014-09-16...
View Articleis good have single index an composite index on same field (no replies)
CREATE TABLE test ( id INT NOT NULL, last_name CHAR(30) NOT NULL, first_name CHAR(30) NOT NULL, PRIMARY KEY (id), KEY `first_name` (first_name), KEY `last_name` (last_name), KEY `last_first`...
View Articleusing ibdata1 in another mySQL server (no replies)
Hi Everybody, Plase, forgive me if this post is in wrong place or off topic, but I don't know what to do. I'll explain it better: One of my customers has a MySQL 5 installed and running, but doesn't...
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