June 19, 2013

Post: Migrating between MySQL schemas with Percona Xtrabackup

… TABLE `’, table_name, ‘` DISCARD TABLESPACE;’) AS _ddl FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA=’orig’ AND ENGINE=’InnoDB’; EOF mysql -N -B <<'EOF... TABLE `', table_name, '` IMPORT TABLESPACE;') AS _ddl FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA=’orig’ AND ENGINE=’InnoDB’; EOF For full disclosure, here…

Post: Percona Server 5.1.69-14.7 now available: A drop in replacement for MySQL

… any bitmap files. Bug fixed #1184427. Incorrect schema definition for the User Statistics tables in INFORMATION_SCHEMA (CLIENT_STATISTICS, INDEX_STATISTICS, TABLE_STATISTICS…

Post: Percona Server 5.6.11-60.3 first Release Candidate now available

… write-intensive workloads. Bug fixed #1171699. Incorrect schema definition for the User Statistics tables in INFORMATION_SCHEMA (CLIENT_STATISTICS, INDEX_STATISTICS, TABLE_STATISTICS…

Post: Implementing SchemaSpy in your MySQL environment

…/schemaspy driverPath=/usr/share/java/mysql-connector-java.jar Example Schema CREATE TABLE `parent` ( `parent_id` int(10) unsigned NOT NULL…, I don’t need to pass any host:port or schema name information. Viewing SchemaSpy output A completed Relationships view of these… value. This is basically a quick sanity check of your schema for any significant errors or items requiring review. Columns – a…

Post: Webinar: MySQL 5.6 Performance Schema

… be leading  a Webinar titled, “Using MySQL 5.6 Performance Schema to Troubleshoot Typical Workload Bottlenecks.” In this Webinar I will offer an overview of Performance Schema, focusing on new features that have been added in MySQL… most time showing how you can use the wealth of information Performance Schema gathers to understand some of the typical performance bottlenecks…

Comment: Mass killing of MySQL Connections

@Alon, You have a typo. Should be information_schema.processlist

Post: Is your MySQL buffer pool warm? Make it sweat!

… server’s caches hot. (See my Fosdem 2013 slides for information about discarded designs and benchmarks.) First, we set long_query….0.0.1 –mysql-username playback –mysql-password PaSSwOrd –mysql-schema schema_name –query-log-stdin –dispatcher-plugin thread-pool –thread-pool…

Comment: Webinar: MySQL 5.6 Performance Schema

… watched some of the recorded webinar and it is very informative but I would also like to have a copy of… reference/search in directly while trying out the MySQL Performance Schema tool myself. Thanks for your help :) Zoe

Post: Is Synchronous Replication right for your app?

… great maxim that really helps encapsulate a lot of this information and puts it into context with your application workload: [In… SET count = $last_count where achievement = ‘killed_troll’”; } change your schema In Example 2, above, how above moving the ‘joined’ column…

Post: Percona Playback 0.6 for MySQL now available

… a server or database upgrade, change in my.cnf or schema change can affect the overall performance of your MySQL database… hardware against existing setups to allow users to make an informed choice about deploying changes to their database infrastructure. This release…