Certain clients terminate with error 6028

At only a few locations, users of a widely used application receive error "A/R block doesn't match callers. (6028)" when their session terminates.

The problem did not always occur, but has appeared within the last few months.

The problem occurs intermittently several times per week, but is not readily reproducible.

The code identified in the protrace uses a temp-table.

Machines on which the error occurs have the recommended amount of memory to run the application.

No shared temp-tables.

No other local procedures are updating the temp-table at the time the error occurs.
 

The OpenEdge working directory or directory defined in the -T client startup parameter, was not excluded from the antivirus program at the sites where the problem occurred.
The 6028 error in this case was due to the a/r unit (block) which acts as place holder in the lbi file for a subtransaction not being where it is expected to be.
The antivirus program was accessing LBI client temp files files that interfered with normal temp-table processing.

Exclude OpenEdge and application directories from the antivirus program.

Refer to Article   What Progress files could be excluded from an anti-virus program?

 

Progress Articles:  

 How to troubleshoot error 6028