Channel Detect Errors When Backing Up Linear VSAM Datasets IOS000I or IOS1000I

Products

• Disk Backup and Restore - MVS
• DISK BACKUP AND RESTORE- ADD-ON OPTIO
• DISK BACKUP AND RESTORE

Issue/Introduction

What causes Channel Detect Errors when running a BACKUP or ARCHIVE of Linear VSAM files (LDS)?

ex: 

IOS000I CD1C,2F,CMD,86,0E00,,5B7A0000,CMD008,@SSR7261, 221

 

 

 

 

Environment

Release: SMDI3900200-12.5-Disk-Backup and Restore-for z/OS
Component:

Resolution

The message  IOS000I CD1C,2F,CMD,86,0E00  indicates:

CMD=Command reject
86=The command code of the running channel command word (CCW) when
the error occurred.
0E00=The status portion of the subchannel status word (SCSW). 

X'86' is a multi-track read data issued starting at
cylinder/track 5B7A/0E00 and failing on
cylinder/track 5B7A/0000
for device CMD008

 

Using SYSPARM USEDSSIO with or including LDS will rectify the issue.

ex. USEDSSIOLDS