CA 1 - Questions related to Audit File at 100%

Products

• CA 1 Flexible Storage

Issue/Introduction

We are upgrading CA1 from R14 to R15. Checking out the TMC and AUDIT datasets. AUDIT file shows as below: 

Questions: 

1. Dataset was allocated in 2001. We should make it larger, correct?

2. I'm searching for a procedure to allocate a new one and copy the contents of the current one to the new one. 

Data Set Name . . . . : SSSS.CA1.AUDIT                                    

General Data                          Current Allocation                  

 Management class . . : **None**       Allocated cylinders : 100          

 Storage class  . . . : **None**       Allocated extents . : 1            

  Volume serial . . . : VVVVVV                                            

  Device type . . . . : 3390                                              

 Data class . . . . . : **None**                                          

  Organization  . . . : PSU           Current Utilization                 

  Record format . . . : FB             Used cylinders  . . : 100          

  Record length . . . : 370            Used extents  . . . : 1            

  Block size  . . . . : 27750                                             

  1st extent cylinders: 100                                               

  Secondary cylinders : 0             Dates                               

  Data set name type  :                Creation date . . . : 2001/09/10   

  Data set encryption : NO             Referenced date . . : 2026/06/02   

                                       Expiration date . . : ***None***   Data Set Name . . . . : SSSS.CA1.AUDIT                                    
                                                                          

 

Resolution

Answers to the above questions: 

1. The AUDIT file showing 100% utilization is completely normal and expected. Given its creation date, it likely reached 100% capacity back in October of 2001.

The CA 1 AUDIT file operates as a wrap file (a circular block of records). It utilizes a control record to keep track of the last backed-up record location and the total number of records written since that last backup. When your daily morning audit backup runs, it processes records starting from that tracked pointer and copies the accumulated data. Once the backup completes, this starting pointer is reset.

The file is designed to continuously wrap around to the beginning when it reaches the end. CA 1 will only issue a warning message to run an emergency backup if you are rapidly approaching the absolute limit of available records.

In short, a 100% utilization of this dataset is simply a reflection of how the system is engineered—there is no need for concern!

2. Two procedure to expand it if its required but not necessary in this case: 

a. Format the Audit File Without Shutting Down Tape Processing

b. Format the Audit Data Set While Tapes are Not Processing