INVALID PANVALET LIBRARY - +DASD ERROR 010400 ON PANVALET LIBRARY

Products

• Panvalet

Issue/Introduction

Users Panvalet library is inaccessible, presenting the following errors: INVALID PANVALET LIBRARY +DASD ERROR 010400 ON PANVALET LIBRARY

 

Cause

The error code 010400 signifies a Permanent I/O Error (01) with an unexpected condition (0400), often an "End of Data" marker encountered prematurely during a Read or Write operation.

Potential root causes include:

• Physical Hardware Failure: Media damage at the specific disk location (CCHHR) identified in the error message.
• Block Limit Exceeded: In Panvalet Release 14.2 or below, libraries are restricted to 65,535 blocks. Allocating space beyond this (roughly 200 cylinders on 3390 DASD) can trigger this error.
• Logical Corruption: Internal pointers or control blocks have become misaligned or unreadable, leading the system to attempt access in uninitialized areas.

Resolution

To restore access and verify library integrity, follow these steps:

1. Restore from Backup
The primary method for resolving library corruption is to **restore the library from a known good backup** taken prior to the error

2. Verify Allocation and Initialization
- Ensure the library is initialized correctly using the PAN#4 ++CLEAR utility
- Check the number of cylinders/tracks allocated. If using Release 14.2 or below, ensure the allocation does not result in more than **65,535 blocks**

3. Run Validation Utilities
Run the following to check for internal logical consistency:
++ANALYSIS (to check for pointer errors)
++DUMP to a protection file (to verify if all members can be read)