Percona : MySQL open source fork with performance improvements

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3
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2answers
444 views

Percona Toolkit Installation Error

[root@localhost ~]# rpm -ivh percona-toolkit-2.2.7-1.noarch.rpm error: Failed dependencies: perl(DBD::mysql) >= 1.0 is needed by percona-toolkit-2.2.7-1.noarch perl(Time::HiRes) is needed ...
2
votes
1answer
142 views

How mysql (innodb) handles auto increment column

I am working on a OLTP environment with multiple parallel write operation. I found this in documentation about auto increment locking but still i am interested to know much about it in details. Can ...
2
votes
1answer
210 views

innobackupex is failing while exporting backup

I am using perl script which is working fine in one of my other box which used to take individual schema backups & finally take all schema together using percona innobackupex. I have following ...
1
vote
1answer
34 views

Mysql Partitions with Partition limit

I have a partition table on basis of Primary key having 1.5 Billion rows in it. But when i check ibd files only 80 ibd show in GB's whereas 120ibd shows 1MB file. I would like to know how does the ...
1
vote
1answer
209 views

Innodb buffer pool indexes versus data usage

The server has 128GB of RAM. The innodb_buffer_pool_size is set to 106GB. mysql> show global variables like 'innodb_buffer_pool_size'; +-------------------------+--------------+ | Variable_name ...
0
votes
1answer
35 views

Does Percona Xtrabackup support RedHat release 4

I downloaded Percona's Xtrabackup rpm file for RedHAT. I attempted to install but hit into an error. The error seems to point to missing dependencies and libraries. I have no issue with RedHat 6 OS. I ...
0
votes
1answer
99 views

Mariadb Galera Cluster using Xtradb backup is not working

I am trying out the first test of MariaDB Galera cluster setup without success. This is the error in the log innobackupex: Created backup directory /tmp tar: -: Cannot write: Broken pipe tar: Error ...
0
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1answer
45 views

Mysql JOIN with 25million rows

Recently I got stucked with a table where its grown to +25million and I have got a query that's doing a JOIN on it. The query take 2.5hours to execute even though I got Good 96GB RAM and RAID10 with ...
0
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1answer
55 views

Slow ranking values in MySQL

I have a table of around 30 million retail products, with various INT columns that describe sales counters and pricing at different retailers. I'm supposed to display well over 70 different rankings ...
0
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1answer
33 views

Any recommendation on my.cnf on aws.large instance?

Any best recommendation variables for my.cnf on percona server on a high 256GB RAM and 32 CPU with 4000 IOPS? How about below ones? > innodb_buffer_pool_size=180G > ...
0
votes
1answer
208 views

pt-table-checksum - Verify MySQL replication integrity

export/import: $ mysqldump -h6dhdbm01 -p clee2 users > 6dhdbm01-clee2.users.sql Enter password: $ echo $? 0 $ mysql clee2 < 6dhdbm01-clee2.users.sql $ echo $? 0 $ pt-table-checksum: $ ...
0
votes
1answer
247 views

Consolidated realtime mysql backup with master/slave setup or binlog

I have 20+ mysql servers and their have low write requirements. So, I want to see if any way I can replicate the data/binlog from these servers to a single slave so realtime backup purpose. If I ...
0
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1answer
419 views

Strange Locking issues while playing back logs via percona playback

Problem while replaying logs I am in the process of benchmarking a new DB node (specs at the end) and have run across some strange behavior: As described here i: Created a dump (innobackupex ftw) ...
2
votes
0answers
1k views

How to prevent “ibdata files do not match the log sequence number”?

I am dealing with a very large set of databases that are all innodb. I've enountered this on mysql restart too many times for my comfort: ibdata files do not match the log sequence number But I've ...
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0answers
86 views

pt-table-checksum generates no output

I've been using pt-table-checksum on our staging server successfully, but when I run ./pt-table-checksum h=localhost,u=user --ask-pass --lock-wait-time=50 --databases prod It just sits there. No ...
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0answers
20 views

InnoDB Recovery failed after Percona5.6 crash

The Server has crashed and now there is a problem when starting Percona5.6: 2015-03-19 17:26:45 2060 [Note] InnoDB: The log sequence numbers 365752853 and 365752853 in ibdata files do not match the ...
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0answers
14 views

Percona XtraDB Cluster: Node going in hang stage again and again

I am getting below error again and again on Percona XtraDB Cluster nodes and after this my MySQL service is going in hang state. 2015-03-16 08:39:05 13254 [ERROR] WSREP: Unsupported key prefix: ^B: ...
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0answers
16 views

Does pt-table-checksum work in circular replication environments?

I have 3 masters in circular replication. I run pt-table-checksum in one of the masters only. A->B->C->A The queries do get replicated the "next" server B but I don't think they are being replicated ...
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0answers
48 views

Very slow IO on mysql percona server

Our site goes down because the IO on our database servers is too slow. Troubleshooting this we found that mysql is really really slow. It's constantly reading from disk and I think not using enough ...
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0answers
59 views

What could be causing mysql to spike CPU load?

I'm running Mysql 5.5.28 and it seems at random times I get high CPU on mysql, during the high load I cant find anything wrong in the process list, as the load increases the longer it takes to run ...
0
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0answers
51 views

Is impossible percona xtrabackup restore backup data on mysqld?

I am testing percona xtrabackup. I hear a lot advantage of it. I have purpose to use it instead of mysqldump. Based on document ...
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0answers
12 views

Percona XtraDB and innodb_flush_log_at_trx_commit=2

I'm running Percona XtraDB on a three nodes cluster. Each one has this piece of configuration: innodb_flush_log_at_trx_commit=2 sync_binlog=0 I perfectly know that this is not the safest ...
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0answers
25 views

Choose prefered node for IST in Percona XtraDB Cluster

Percona XtraDB Cluster 5.5. Is it possible to use only selected donor node for IST? Like wsrep_sst_donor option for SST.
0
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0answers
27 views

Migrate from Percona Cluster to MariaDB Cluster

We are at present running latest version (5.6) of Percona Cluster. Since 5.6 upgrade we are having major stability problems and all minor updates are getting worse. Is there any possibility of ...
0
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0answers
75 views

How to migrate a mysql server in production to Percona XtraDB Cluster

I need some help : I have a mysql server in production and i want to migrate all the database to an existing cluster (percona xtradb). For now , my idea is : 1) Lock all tables 2) do a dump per ...
0
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0answers
61 views

Change a query so it no longer takes 20 mins and uses a 93G tmp table

Edit: So how would I go about changing this query to something more sane (given that I can work around the hibernate madness) This might be a whole different problem, but Hiberate has created a ...
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0answers
69 views

Percona MySQL LDAP authentication fails through .NETmysql connector

Basically MySQL uses its native authentication, where the username and passwords are stored in mysql.user table. MySQL authenticates user against the credentials stored in mysql.user table. Our ...
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0answers
344 views

Why Percona MySQL is crashing again and again

We have Percona MySQL Cluster running with three nodes on CentOS. Server : Percona-XtraDB-Cluster-server-56-5.6.19-25.6.824.el6.x86_64 One node is crashing repeatedly. Thread pointer: 0x18910ba30 ...
0
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0answers
107 views

MySQL insert Needed data only then send it to crystal report

I'm Working on a big project more than 200 table, I'm using MySQL(Percona), Java & Crystal Report JRC. I have some reports which so big & has a lot of joins between multiple tables. Inside the ...
0
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0answers
56 views

Percona slower than vanilla Mysql 5.6

A lot of folks had suggested to use Percona as more robust and enhanced version of Vanilla Mysql. I just setup Percona 5.6 today on our server to see how it holds up against our traffic. I noticed ...
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0answers
415 views

Low Query cache efficiency after mariadb 5.5 migration

First of all, many thanks in advance for your creating this nice site/place where people can find help to our "big" issues/problems. I usually use every day and you dont know how many times I fix my ...
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0answers
152 views

SQL queries are very slow

I have noticed that my queries are getting slower. Some update queries take about 48-50 seconds. Here's how it looks: [root@db-1 ~]# tail /var/lib/mysql/mysql-slow.log # Time: 131113 17:09:48 # ...
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0answers
138 views

Is STRICT_TRANS_TABLES required for replication?

Is STRICT_TRANS_TABLES required for replication? Particularly, I need to know about it for Percona Cluster.
0
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0answers
189 views

Percona XtraDB Cluster With Async slaves

I have set up a 3 node percona cluster in amazon ec2. As our client required, i also had to set up an asynchronous slaves in another datacenter as well. Each async slave pointed to single percona ...
0
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0answers
196 views

mysql died with stack trace

My mysql server died while running select queries. Status of every table is good. When I went to the error log I found this: Thread pointer: 0x2ab63e0f49e0 Attempting backtrace. You can use the ...