PowerProtect Data Manager: Generic Application Agent Sybase Backup Fails With ABG0023 "ct_connect(): protocol specific layer: external error"

Summary: A Sybase database asset-level backup performed through the PowerProtect Data Manager Generic Application Agent fails with the error "ct_connect(): protocol specific layer: external error: The attempt to connect to the server failed" followed by error code ABG0023 indicating the backup was skipped because data was unavailable. The failure occurs because PowerProtect Data Manager does not correctly pass the asset-level credentials to the Sybase backup script, which prevents the script from authenticating to the Sybase server. This defect affects PowerProtect Data Manager versions 19.22 and 20.1. Upgrading both the PowerProtect Data Manager appliance and the Generic Application Agent to version 20.2 resolves the issue. ...

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.

Symptoms

The environment uses the PowerProtect Data Manager Generic Application Agent to protect a Sybase database. The PowerProtect Data Manager appliance runs version 19.22 or 20.1. An asset-level backup initiated through PowerProtect Data Manager fails with a Sybase connection failure:

ct_connect(): protocol specific layer: external error: The attempt to connect to the server failed.
ABG0023: Skipped the backup... because the data is unavailable for backup. The backup is skipped because there is no data for backup since the previous backup.

Cause

A code defect in PowerProtect Data Manager versions 19.22 and 20.1 prevents the asset-level credentials from being correctly passed to the Sybase backup script during an asset-level backup operation.

Resolution

The issue has been resolved in the PowerProtect release 20.2.0.0-14. Install the latest PowerProtect Data Manager release to resolve the symptom. The PowerProtect Data Manager Appliance and Generic Application Agent must both be upgraded in the environment. The newest available releases are available on the PowerProtect Data Manager Drivers & Downloads page. If required, contact Dell Support for assistance or any further questions.

Products

Data Protection Suite Series, PowerProtect Data Manager
Article Properties
Article Number: 000492562
Article Type: Solution
Last Modified: 30 تموز 2026
Version:  1
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.