StorageTek Host Software Component 6 User Manual

1st ed., 6/30/04 - 312579601

The following QCDS program samples detail two different scenarios: 

• a request to open the current primary CDS 
• a request to process two library element record area types. 

Both of these examples can be found in the SAMPLIB data set distributed to customers. 
Error processing code has been omitted in the examples. 

This sample QCDS request uses automatic CDS allocation to open the current primary 
CDS. Automatic CDS allocation does not require JCL to identify the input CDS but does 
require an operational HSC address space. 

After opening the CDS volume record area, the program reads groups of volume records 
into a 64 KB response area buffer.  

SLURRDBA 

24 - Read failed: Attempt to read beyond the end of the 

record area. 

SLURRDIB 

28 - Read failed: Invalid response area buffer address. 

SLURRDIL 

32 - Read failed: Response area buffer length too short to 

contain both the reply header and at least one library element 
record. 

SLURCLOK 

0 - Record area was closed successfully.

SLURCLAC 

4 - Close failed: Attempt to close a record area that is 

already closed. 

SLURCLIT 

8 - Close failed: Invalid token value. 

SLURCLRA 

12 - Close failed: Invalid record area type.

SLURCLIO 

16 - Close failed: I/O error while accessing the associated 

CDS.