https://ronaldbradford.com/tags/mysql-for-oracle-dba/ Recent content in Mysql for Oracle Dba on Enterprise Data Architect | Principal Data Strategist | MySQL Subject Matter Expert | Author | Speaker Hugo -- gohugo.io en-us Mon, 08 Mar 2010 18:24:25 +0000 https://ronaldbradford.com/blog/dont-assume-per-session-buffers-2010-03-08/ Mon, 08 Mar 2010 18:24:25 +0000 https://ronaldbradford.com/blog/dont-assume-per-session-buffers-2010-03-08/ MySQL has a number of global buffers, i.e. your SGA. There are also a number of per session/thread buffers that combined with other memory usage constitutes an unbounded PGA. One of the most common errors in mis-configured MySQL environments is the setting of the 4 primary per session buffers thinking they are global buffers. https://ronaldbradford.com/blog/dont-assume-transactions-2010-03-04/ Thu, 04 Mar 2010 17:01:50 +0000 https://ronaldbradford.com/blog/dont-assume-transactions-2010-03-04/ MySQL by default is a NON transactional database. For the hobbyist (See The Hobbyist and the Professional ), startup entrepreneur and website developer this may not appear foreign, however to the seasoned Oracle DBA who has only used Oracle the concept is very foreign. https://ronaldbradford.com/blog/dont-assume-common-terminology-2010-03-03/ Wed, 03 Mar 2010 15:36:04 +0000 https://ronaldbradford.com/blog/dont-assume-common-terminology-2010-03-03/ In Oracle the default transaction isolation is READ_COMMITTED. In MySQL the default is REPEATABLE_READ. Because MySQL also has READ_COMMITTED I have seen in more then one production MySQL environment a transaction isolation of READ_COMMITTED. https://ronaldbradford.com/blog/dont-assume-session-scope-2010-03-02/ Tue, 02 Mar 2010 20:37:05 +0000 https://ronaldbradford.com/blog/dont-assume-session-scope-2010-03-02/ MySQL system variables and status variables have two scopes. These are GLOBAL and SESSION which are self explanatory. This is important to realize when altering system variables dynamically. The following example does not produce the expected results. https://ronaldbradford.com/blog/dont-assume-series-mysql-for-the-oracle-dba-2010-03-02/ Tue, 02 Mar 2010 18:10:48 +0000 https://ronaldbradford.com/blog/dont-assume-series-mysql-for-the-oracle-dba-2010-03-02/ As part of my MySQLCamp for the Oracle DBA series of talks to help the Oracle DBA understand, use and appreciate MySQL I have also developed a series of short interesting posts I have termed “Don’t Assume”. https://ronaldbradford.com/blog/learning-mysql-as-an-oracle-dba-2007-08-19/ Sun, 19 Aug 2007 05:20:37 +0000 https://ronaldbradford.com/blog/learning-mysql-as-an-oracle-dba-2007-08-19/ Updated I have an entire section now devoted to various MySQL for the Oracle DBA Resources . You will find additional information here. This week I presented two one day free seminars, “MySQL DBA Bootcamp for the Oracle DBA ” in New York and San Francisco.