Re: Index Query Tunning

2014-01-29 Thread Morgan Tocker
Hi Anupam, We are keep on getting deadlock due to index locking, there is index on FLAG, we can allow phantom read in session 1, we tried with READ COMMITTED but still same, I think issue with next-key locking. Did you try setting binlog-format=ROW as well? I have a brief explanation of thi

Index Query Tunning

2014-01-29 Thread Anupam Karmarkar
Hi All, I have situation here about Innodb locking. In  transaction, We select from XYZ transaction table values and then updates it like below SESSION 1: START TRANSACTION; SELECT ID INTO vID FROM XYZ WHERE FLAG = 1 ORDER BY TIME LIMIT 1 FOR UPDATE; UPDATE XYZ SET FLAG=0 WHERE ID = vID; COMMI