Yesterday (Oct. 22) I gave a presentation titled “MySQL 5.6 Full Text Search Throwdown.” If you missed it, you can still register to view the recording and my slides.

Thanks to everyone who attended, and especially to folks who asked the great questions. I answered as many as we had time for during the session, but here are all the questions with my complete answers:

Q: Does Solr automatically maintain its index against MySQL? Do you have to hit the Solr server with a specific query to keep the index ‘warm’?

There are several strategies for updating a Solr …

As a part of improving the error handling, in MySQL 5.7.5 we have re-implemented STRICT sql mode.

STRICT mode in MySQL affects the errors that arise from invalid, missing, or out of range values in DML statements such as INSERT, UPDATE, and DELETE. The new implementation aims to make the behavior of STRICT mode more consistent, yet maintain backward compatibility as much as possible.

In MySQL 5.7.5, we have made three general improvements to STRICT mode behavior:

 1. STRICT mode got simpler

It was observed that having a large number of sql modes dependent on STRICT mode creates confusion among users. Specifically, we are talking about NO_ZERO_DATE, NO_ZERO_IN_DATE and ERROR_FOR_DIVISION_BY_ZERO modes. You can se further details on the above sql modes here. These modes only …

With a last minute change to the host_summary_by_stages view for the 1.2.0 release of the sys schema, I managed to break the views without noticing it.

So, in the shortest release cycle for the sys schema ever (less than 24 hours), 1.3.0 has now been released.

This comes with a bonus though, there was also a new view that was contributed by Jesper Wisborg Krogh waiting to be merged as well, so I’ve added that to the 1.3.0 version (hence the 1.3.0 instead of 1.2.1).

This is the innodb_lock_waits view, which shows all sessions that are waiting for a lock within InnoDB, as well as the details of who is blocking them, here’s an example output:

mysql> SELECT * FROM innodb_lock_waits\G
*************************** 1. row ***************************
     waiting_trx_id: 805505 …

MySQL sys version 1.2.0 has just been released.

All views now work with MySQL 5.7.5, and the ONLY_FULL_GROUP_BY changes.

There is also a new script available (generate_sql_file.sh) that will allow RDS users to easily generate a single SQL file, using a specified user, that can be loaded in to an RDS instance. See the README for details on how to use that.

Here’s a full summary of the other changes:

Backwards Incompatible Changes

• The host_summary_by_stages and user_summary_by_stages wait_sum and wait_avg columns were renamed to total_latency and avg_latency respectively, for consistency.
…

So as you may know, my new position involves the MySQL world, so I’m in the task of picking up the language and whereabouts of this DBMS, and my teamate Alkin Tezuysal (@ask_dba on Twitter) has a very cool break and fix lab which you should check out if you are going to Percona Live London 2014, he will be running this lab, so be sure to don’t miss out.

So the first thing I tried was to bring up the service, but to my surprise, the MySQL user didn’t exist. So the first thing I did was create the user.

Note: Whenever you see “…”, it is to …

We have come a long way since the first code was put down for libAttachSQL on the 4th July. It has been a fantastic project to work on so I am very pleased to announce our first GA release.

For those who haven't seen it so far libAttachSQL is a non-blocking, lightweight C API for MySQL servers. It is Apache 2.0 licensed so is compatible with most Open Source and commercial licensing. HP's Advanced Technology Group saw a need in this field not just for HP itself but for other companies and projects too.

As for the GA release itself, there are not many changes over the RC release beyond stability fixes. A full list can be seen in the version history documentation.

In addition to the GA release we have recently had a driver for …

I reckon there’s little sense in running 2 or more Percona XtraDB Cluster (PXC) nodes in a single physical server other than for educational and testing purposes – but doing so is still useful in those cases. The most popular way of achieving this seems to be with server virtualization, such as making use of Vagrant boxes. But in the same way you can have multiple instances of MySQL running in parallel on the OS level in the form of concurrent mysqld processes, so too can you have multiple Percona XtraDB Cluster nodes. And the way to achieve this is precisely the same: using dedicated datadirs and different ports for each node.

Which ports?4 tcp ports are used by Pecona …

In 5.7.5, as a part of the larger effort to improve error handling, we re-implemented the IGNORE clause (WL#6614). The IGNORE clause is a MySQL extension to the SQL standard. It affects the errors which occur for each row. The new implementation aims to make the behavior of the IGNORE clause more consistent.

Statements which support the IGNORE clause are:

• INSERT [ IGNORE ]
• UPDATE [ IGNORE ]
• DELETE [ IGNORE ]
• LOAD DATA [ IGNORE ]
• LOAD XML [ IGNORE ]
• CREATE TABLE… [ IGNORE ] SELECT

When the INSERT statement is used to insert a number of rows into a table, an exception during processing would normally abort the statement and return an error message. With the IGNORE keyword, rows that cause certain exceptions are ignored, but the remaining rows are inserted and the …

I will be talking at Open Source India scheduled at NIMHANS convention center at Bangalore on 7th and 8th of Nov 2014.

Oracle has been associated with the Open Source India conference for the past 4 years and this will be the 5th year when we will be taking part in this conference and talking about MySQL to the open source community.

OSI gives us a great opportunity and a platform to speak to and hear from the open source community. There have been some great interactions with developers, users, customers of MySQL and some really great people involved with the open source movement in India.

We look forward to interact with the open source community again. While we will likely learn much this conference about the progress of the open source community in India, we will also be informing you about the fantastic progress Oracle has made with MySQL in the past year. …

Webm_v2 was add oracle and mongodb monitor module

webm was agent uploaded mode to save statistics

we use mysql database as monitor server

we already design tables to store these data (consider for future analysis)

you can download from github : https://github.com/ylouis83/webm