August 2013 - discuss - lists.mariadb.org

[Maria-discuss] New Question: how can i transfer data use cursor
by AskMonty KB 16 Aug '13

16 Aug '13

Hello, A new question has been asked in "MariaDB Documentation" by bhdbing: -------------------------------- in MariaDB the cursor can't be a output datatype, generally in Oracle ,i declare a cursor and use it for transfer data,the sample like: ...rs out sys_refcursor... open rs for select * from %table name%; ... in c#,the cursor rs can be accepted,so i can get the whole data from %table name%. in MariaDB,how can i do this? -------------------------------- To view or answer this question please visit: http://kb.askmonty.org/en/how-can-i-transfer-data-use-cursor/

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[Maria-discuss] New Question: Timestamps are different
by AskMonty KB 14 Aug '13

14 Aug '13

Hello, A new question has been asked in "Replication, Cluster, & Multi-Master" by confidus: -------------------------------- I am in the very early stages of testing out our Galara cluster with innodb databases. I have a tool that is comparing data against each node on the cluster and I have found that timestamps seem to be the only thing that is inconstant and by exactly 5 hours. I have a record in a Galera cluster that has a field with date time. I took one database and started comparing each table (one by one). I had several thousand records with different timestamps. An example is 2013-07-03 11:13:59, but another server, the date time is 2013-07-03 16:13:59. I would suspect that the times would be synced everywhere exactly the same. If I run a "SELECT NOW();" on all four servers at the same time, I see: +---------------------+ | NOW() | +---------------------+ | 2013-08-13 14:59:51 | +---------------------+ +---------------------+ | NOW() | +---------------------+ | 2013-08-13 14:59:51 | +---------------------+ +---------------------+ | NOW() | +---------------------+ | 2013-08-13 14:59:51 | +---------------------+ +---------------------+ | NOW() | +---------------------+ | 2013-08-13 14:59:51 | +---------------------+ If I run a select @@global.time_zone, @@session.time_zone on all four nodes in the cluster, I also see +--------------------+---------------------+ | @@global.time_zone | @@session.time_zone | +--------------------+---------------------+ | SYSTEM | SYSTEM | +--------------------+---------------------+ And if I enter date on all 4 machines, the time matches just fine. I have checked other non erip databases (some very large databases) and things are correct within those systems. [root@a2 ~]# mysql -u root -p********** -h a2 -e "select * from safeplan_new1.plan_approval where plan_approval_id=3247" +------------------+----------------+------------------+------------------------+------------------+---------------------+----------------------+ | plan_approval_id | plan_master_id | plan_location_id | plan_approval_location | plan_approval_by | plan_approved_on | plan_approval_status | +------------------+----------------+------------------+------------------------+------------------+---------------------+----------------------+ | 3247 | 292 | 0 | 155 | 133 | 2013-07-03 11:13:59 | 1 | +------------------+----------------+------------------+------------------------+------------------+---------------------+----------------------+ [root@a2 ~]# mysql -u root -p********** -h a3 -e "select * from safeplan_new1.plan_approval where plan_approval_id=3247" +------------------+----------------+------------------+------------------------+------------------+---------------------+----------------------+ | plan_approval_id | plan_master_id | plan_location_id | plan_approval_location | plan_approval_by | plan_approved_on | plan_approval_status | +------------------+----------------+------------------+------------------------+------------------+---------------------+----------------------+ | 3247 | 292 | 0 | 155 | 133 | 2013-07-03 16:13:59 | 1 | +------------------+----------------+------------------+------------------------+------------------+---------------------+----------------------+ [root@a2 ~]# mysql -u root -p********** -h a4 -e "select * from safeplan_new1.plan_approval where plan_approval_id=3247" +------------------+----------------+------------------+------------------------+------------------+---------------------+----------------------+ | plan_approval_id | plan_master_id | plan_location_id | plan_approval_location | plan_approval_by | plan_approved_on | plan_approval_status | +------------------+----------------+------------------+------------------------+------------------+---------------------+----------------------+ | 3247 | 292 | 0 | 155 | 133 | 2013-07-03 16:13:59 | 1 | +------------------+----------------+------------------+------------------------+------------------+---------------------+----------------------+ -------------------------------- To view or answer this question please visit: http://kb.askmonty.org/en/timestamps-are-different/

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[Maria-discuss] New Question: flush host
by AskMonty KB 14 Aug '13

14 Aug '13

Hello, A new question has been asked in "FLUSH commands" by h725: -------------------------------- i have looking for info how to 'read' info which are the hosts that hit the max_connect_errors. I have found there was a patch of Jeremy Cole, but i have not found anything for Mariadb. Is there a way to know which hosts increase the max_connect_errors?? any from SHOW or information_schema? thanks a lot -------------------------------- To view or answer this question please visit: http://kb.askmonty.org/en/flush-host/

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[Maria-discuss] New Question: use trigger for create table
by AskMonty KB 14 Aug '13

14 Aug '13

Hello, A new question has been asked in "MariaDB Documentation" by bhdbing: -------------------------------- as the title,does this db can do this? i want change my db from ORACLE to MariaDB,some problem appeared. and how to use sqlstring? in ORACLE use sql='%some sentences%'; and executed immediate, how it does in MariaDB? so my email:bhdbing@163.com,Thank you for your help! -------------------------------- To view or answer this question please visit: http://kb.askmonty.org/en/use-trigger-for-create-table/

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[Maria-discuss] Question about MariaDB Non-blocking Client
by Mike Gibson 08 Aug '13

08 Aug '13

Greetings, I'm using the MariaDB Non-blocking API to write a C++ client, but I've hit a wall regarding connection checking. I've been referencing the binding from node-mariasql ( https://github.com/mscdex/node-mariasql/blob/master/src/binding.cc) My app parses a config and creates new objects for each query, where each object has a MYSQL struct and MYSQL *pointer. Then, for each I set state to STATE_CONNECT and call doWork(). This works fine, when I can connect right away. The problem I'm experiencing is if I have a connection and kill the server (/etc/init.d/mysql stop) and then start it back (/etc/init.d/mysql start), I can never get clean reconnects. It's usually a mixture of errcode 2058, 2003, 2013. I'm really confused how to gracefully manage connections. Before I was using the official MySQL C++ connector, and it provides a connection->isConnected() method. I'm wondering how I can get something similar with MariaDB's client, as I need the non-blocking interface. Given: MYSQL mysql, *mysqlHandle; Look at the mysql_real_connect_start() or cont() functions. I provide MYSQL struct and on connect I get a copy of the struct stored in *mysqlHandle. It's not clear to me what the purpose of the copy is at this point as I still use the initial struct to call query(). In the case that I can detect a disconnection, how do I properly clean up the connection and attempt reconnect? Do I mysql_close(&mysql) and/or mysql_close(mysqlHandle), shutdown/close the file descriptor, mysql_init() a new handle and go through mysql_real_connect_start/cont()? Does it even make sense for each object to have its own MYSQL struct that I mysql_init(), or would it be better to have layer on top that mysql_init()s a single MYSQL struct, connects, and passes the returned *mysqlHandle to each query? Thanks for providing the async client, any help is appreciated.

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[Maria-discuss] New Question: Web Applications do not receive all data in Galera Cluster
by AskMonty KB 07 Aug '13

07 Aug '13

Hello, A new question has been asked in "Replication" by confidus: -------------------------------- Hello, I have a real strange issue. I have a web application that appears to not show the correct records. I am using a load balancer for a web farm for a billing system. I am also using a load balancer for the Galera cluster. When a trouble ticket is generated, sometimes that ticket is not available on all the web servers, but when I look at each individual MariaDB server, I see the record. Data commits are synced and all looks good from the cluster side of things. I can perform a mysqldump to another database and point the billing system to that database and all is good. If I reboot each MariaDB server one by one, things start working again. It almost seems like there is some caching where the database cluster at times only shows records that were generated by that web server. I did check that all the web servers in the farm are using the same load balanced ip address for the MariaDB farm and they are. I have replicated this on two different web applications (A CRM & Billing system) both on different web farms. -------------------------------- To view or answer this question please visit: http://kb.askmonty.org/en/web-applications-do-not-receive-all-data-in-galer…

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Re: [Maria-discuss] MariaDB-Galera plans?
by Daniel Bartholomew 07 Aug '13

07 Aug '13

On Tue, Aug 6, 2013 at 3:30 AM, Jan Kirchhoff <j.kirchhoff(a)logical-line.de> wrote: > any news on this? I have a 5.5.29 cluster running fine for some time > now, but I'd actually like to have some functionality of MariaDB 10, > so I am waiting for a 10.0-Galera-release... > what's the packaging problem about? The packaging issues I'm involved with are: https://mariadb.atlassian.net/browse/MDEV-4229 and https://mariadb.atlassian.net/browse/MDEV-4141 I'm hoping to have some sort of fix for both issues within a day or so, and shortly after that to have a release. I don't know the status of MariaDB Galera Cluster 10.0. Thanks. -- Daniel Bartholomew Google+ - http://gplus.to/dbart Twitter - http://twitter.com/daniel_bart MariaDB: An Enhanced Drop-in Replacement for MySQL Website - http://mariadb.org Twitter - http://twitter.com/mariadb Google+ - http://google.com/+mariadb Facebook - http://fb.com/MariaDB.dbms Knowledgebase - http://kb.askmonty.org

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[Maria-discuss] MariaDB-Galera plans?
by Aleksey Sanin 06 Aug '13

06 Aug '13

Hello, There have been no MariaDB-Galera releases since March and I am curious if you still plan to support it going forward. It feels that MariaDB-Galera development stopped completely and I wonder if I should be switching to Percona instead. Best, Aleksey

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[Maria-discuss] Compiling
by Roberto Spadim 06 Aug '13

06 Aug '13

Hi guys, i installed slackware-14 downloaded the mariadb-source of 10.0.3 tar -zxf mariadb.tgz cd mariadb-10.0.3 BUILD/configure-pentium64-max and it stoped at: [ 37%] Building CXX object libmysqld/CMakeFiles/sql_embedded.dir/__/sql/sql_yacc.cc.o Linking CXX static library libsql_embedded.a [ 37%] Built target sql_embedded gmake: *** [all] Error 2 the point is... why? any log or something like it to check what happened? -- Roberto Spadim

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[Maria-discuss] New Question: mariadb on Cubieboard (ARM AllWinner A10)
by AskMonty KB 05 Aug '13

05 Aug '13

Hello, A new question has been asked in "Does MariaDB support..." by aemlin: -------------------------------- Hello, I'm using mariadb on Cubieboard (within a debian server). The compile of the sources for 5.5 did work perfectly but the 10.0 does not compile , is it possible to have some help to get it running ? Also is there a way to make my mariadb 5.5 available for other users (by exemple as a .deb file)? -------------------------------- To view or answer this question please visit: http://kb.askmonty.org/en/mariadb-on-cubieboard-arm-allwinner-a10/

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