SoftBase is committed to driving a better DB2 development experience. Combining decades of DB2 expertise, innovative testing and DB2 performance-tuning tools and an unmatched customer support and service team, SoftBase helps application developers and DB2 administrators deliver more reliable DB2 applications and create higher performing DB2 software. Visit www.softbase.com/batch_healthcare_checkpoint.php for more information!

1. SoftBase’s Batch Healthcare:
Checkpoint Facility

2. SoftBase Batch Healthcare
Batch Healthcare Consists of:
 Attach Facility (DB2 Call Attach)
 Checkpoint (Checkpoint Facility)
 Batch Analyzer ( DB2 Batch Analysis)
 DeadLock Advisor (DeadLock-Timeout Reporting)
- All can be licensed separately or in combination

3. SoftBase Checkpoint Facility
Batch Healthcare Solution

4. SoftBase Checkpoint Facility
What is SoftBase Checkpoint Facility?
 Checkpoint Facility Allows You to Restart DB2 Batch
Programs At or Near the Point of Failure

5. SoftBase Checkpoint Facility

6. SoftBase Checkpoint Facility
Checkpoint Facility
 Restart DB2 batch applications at or near point of failure
 Modify frequency of Commits and Checkpoints on the fly
 Easiest deployment of restart code in the industry

7. SoftBase Checkpoint Facility
SoftBase Checkpoint Facility & MQ
 Updates to DB2, MQ, and other RRS compliant
Execute
resources stay in synch with your program's
sequential files and cursor positions, working
storage and random VSAM updates.
 Applications can restart at or near the point of
failure after abends, recompiles, and even Rollback
system IPLs -- with all resources in a consistent
state.

8. SoftBase Checkpoint Facility
Checkpoint Facility – How?
 Capturing restart data and storing it in a DB2 table so it is
recoverable
 Requires no JCL modification to restart, just a resubmit
 Notifying the program that a restart is in progress, and then
 Reopening and repositioning all input and output sequential files and
restoring working storage

9. SoftBase Checkpoint Facility
Checkpoint Facility – Functionality
 Subroutines Fully Supported
 I/O Subsystem for Physical Sequential I/O
 Extended and Large Format Physical Sequential Files

10. SoftBase Checkpoint Facility
Checkpoint Facility – ISPF Monitor
 Active Job
 Waiting on Restart
 Storage Usage
 Frequency Type
 Logical Unit of Work Count
 Checkpoint Count

11. SoftBase Checkpoint Facility
Checkpoint Facility – IMS Bridge
 Checkpoint Facility provides an IMS bridge for applications that use
IMS Symbolic Checkpoint and GSAM files only.
 The IMS Bridge eases implementation for shops moving off IMS
licenses.
 Few IF ANY code changes are required.

12. SoftBase Checkpoint Facility
Modify Commit Frequency without Code Changes
 Intelligently optimize COMMIT frequency to maximize DB2
throughput
o LUWs, Elapsed Time, I/O Activity
 Avoid deadlock/timeout situations caused by infrequent COMMITS

13. SoftBase Checkpoint Facility
Checkpoint Facility – VSAM
 VSAM KSDS Repositioning
o Support through an API
o VSAM data changes are journaled for restart
o Journal file is self maintaining

14. SoftBase Checkpoint Facility
Checkpoint Facility – Data Sharing
 Support Data Sharing Environments
 Restart Data Stored in DB2
 When on DB2 subsystem in a data sharing group fails, Checkpoint
Facility can restart the application
o From the failed subsystem
o Or any other subsystem in the group

15. SoftBase Checkpoint Facility
Checkpoint Facility Deployment
Program function calls can be inserted by 2 different
methods.
 Running Precompiler
o Taking the defaults, or
o Customize via control file parameters
 Hand-coding
o Customize placement by hard-coding into source code

16. SoftBase Checkpoint Facility
Checkpoint Compiler Overview
Original
Code Remains
User Application
Unchanged Source Code
WS SCF
Restartable Program
boundaries
Load Module
Inserts code SoftBase
statements into Checkpoint Facility INIS call
source code Pre-Compiler CKPT call
TERM call
Non-DB2
Optional,
for customizing SCF PC file I/O
Control File

17. SoftBase Checkpoint Facility
Checkpoint Facility Deployment
Working Storage.
DBCC-WS-START
~~~~~~~ - - - - - > User defined WS data, including
~~~~~ Open Cursor host variables
DBCC-WS-END
DBR-Variables
Procedure Division.
INIS - - - - -> Loads job/step name key in CKPT_TABLE
& location of WS areas to be saved
L
U CKPT - - - - -> Saves contents of WS to CKPT_TABLE
W & status listing of all active files
TERM - - - - -> Deletes completed job/stepname row
from CKPT_TABLE

18. SoftBase Checkpoint Facility
Batch Healthcare Solution

19. SoftBase
20 Fall Pippin Lane, Suite 202
Asheville, NC USA 28803
sales@softbase.com
support@softbase.com
800-669-7076
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