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Hello

If I have a TMyConnection, and change the IsolationLevel ...

myConn.IsolationLevel := ilReadUnCommitted;

//test to verify on SGDB
qu := TMyQuery.Create(nil);
qu.Connection := myConn;
qu.SQL.Text := 'show variables like ''tx_isolation'';';
qu.Open;
ShowMessage(qu.Fields[1].AsString); <<<-- detection of problem
qu.Close;
//----

myConn.IsolationLevel := ilReadUnCommitted; isn't working at level of database, only on object myConn, the test shows p example 'REPEATABLE-READ'
only if I do manually 'SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;'
than shows 'READ-UNCOMMITED'
or after one first call to myConn.StartTransaction; so works fine

To correct this for a while in my codes, I am doing this sequence
1 - myConn.IsolationLevel := theIsolationLevelIWant;
2 - SQL Manually 'SET SESSION TRANSACTION ISOLATION LEVEL 'theIsolationLevelIWant';'

Well, I think myConn.IsolationLevel := theIsolationLevelIWant must work at SGDB in time of set property on object myConn if myConn.Active. Is it the right ?

Roberto Novakosky

Obs.: with MyDAC Version 8.2.5 on Delphi 2007 (MySQL 5.1 and others)

Hello,

For the time being, isolationLevel is set only on the transaction start. We will consider the possibility to change this behavior in one of the next versions.