This attribute controls whether or not the CallStack property on error objects can be used. The default value is FALSE (disabled). However, if getting the call stack is important for troubleshooting your application, you should not hesitate to use it. When this attribute is FALSE, the default value, the CallStack property on an error object will be the Unknown value (?).

You can also set this session attribute using the -errorstack startup parameter.

Data type: LOGICAL

Access: Readable/Writeable

Applies to: SESSION system handle

An error object thrown from an application server to a client will contain the stack trace from the application server in its CallStack property. If ERROR-STACK-TRACE is TRUE on the client, the AVM will prepend the CallStack property with the stack trace from the client. The text "Server StackTrace" will appear at the start of the application server stack trace to differentiate it from the client side stack. In the example below, the lines in boldface represent the application server stack trace:

doIt asclient.p at line 46  (asclient.p)
asclient.p at line 26  (asclient.p)
main.p at line 10  (main.p)

Server StackTrace:
myproc svr.p at line 30 (svr.p)
svr.p at line 5  (svr.p)