Assertion failure - MySqlApiDirect.pas, Line 548

[skirsche]

I'm using MyDAC 4.40.0.23 with Delphi 5 and got the following exception:

Assertion failure (d:\Projects\Delphi\Mydac\Source\MySqlApiDirect.pas, Zeile 548)

What is this assertion checking?

[Dimon]

This is an internal check if connection parameters is set.
To solve the problem please give its more detailed description.

[cherubinc]

I've got the same message with the last version 5.90 on D7.

Code: Select all

Assertion failure (D:\Projects\Delphi\Dac\MySql\Source\MySqlApiDirect.pas, line 555)

I would like to use a 24H/24H client S/W without MySQL disconnection on MyIsam database.

So I added TCustomMyConnection.Ping every minute in a timer.

But when the Ping start during a query : I've got this error.

How to check if a query is running ?
With TCustomMyConnection.InTransaction ?

Thx for your support

[eduardosic]

I've got the same message with the last version 5.90 on D7.

Code: Select all

Assertion failure (D:\Projects\Delphi\Dac\MySql\Source\MySqlApiDirect.pas, line 555)

I would like to use a 24H/24H client S/W without MySQL disconnection on MyIsam database.

So I added TCustomMyConnection.Ping every minute in a timer.

But when the Ping start during a query : I've got this error.

How to check if a query is running ?
With TCustomMyConnection.InTransaction ?

Thx for your support

See MyDAC help about LocalFailOver

[Dimon]

So I added TCustomMyConnection.Ping every minute in a timer.
But when the Ping start during a query : I've got this error.

I can not reproduce the problem. Please try to compose a small sample to demonstrate the problem and send it to dmitryg*devart*com.
Note: MyDAC can work in multithreaded applications, so it is thread safe. But the restriction is that you cannot use one component for more than one thread simultaneously.