How to fix the Oracle error PGA-20926: userid string length of number is invalid; maximum length is number?

In this post, you’ll learn more about the Oracle ErrorPGA-20926: userid string length of number is invalid; maximum length is number with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PGA-20926: userid string length of number is invalid; maximum length is number

Reason for the Error PGA-20926: userid string length of number is invalid; maximum length is number

Cause: The userid is too long () to be used with APPC conversation security. The maximum allowable length for the userid is characters. This can occur only when the gateway initialization parameter PGA_SECURITY_TYPE is set to either SAME or PROGRAM.

How to fix the Error PGA-20926: userid string length of number is invalid; maximum length is number ?

You can fix this error in Oracle by following the below steps

Action: The userid must be changed to a shorter value on both the client system and the system where the remote transaction program is being executed. This restriction is imposed by SNA and APPC, not by the gateway.