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DS 30C
DATEVAL DS 8C Date value from BWO recovery point
SUCMSG1 DS 8C Message text
TIMEVAL DS 8C Time value from BWO recovery point
SUCMSG2 DS C Message text
READMSG DS 0CL11 If function = READ put out BWO flags
DS 7C Message text
BWOVAL1 DS C BWO indicator 1
BWOVAL2 DS C BWO indicator 2
BWOVAL3 DS C BWO indicator 3
DS C Message text
*
DATETIME DS D Current date and time value
*
RECOVPT DS 0D BWO recovery point
DTZERO DS B Date dword
DTCENTRY DS B
DTDATE DS 5B
DTSIGN1 DS B
*
DTTIME DS 6B Time dword
DTTENTHS DS B
DTSIGN2 DS B
*
RECOVPTP DS 0D Packed recovery point
DATEPACK DS F Packed version of date
TIMEPACK DS F Packed version of time
*
DFHREGS
PROG CSECT
PROG AMODE 31
*
* Initialise INTO field for RECEIVE
*
MVC DSNAMER(48),BLANKS
MVC INLENGTH(2),INMAXLEN
*
EXEC CICS RECEIVE INTO(INDATA) LENGTH(INLENGTH)
*
CLI TRANFUNC,C’S’ Set or Read call?
BNE PRGREAD
*
* Set up the parameters for a SET call
*
SR R4,R4
LA R4,SET(0)
ST R4,FUNC Set function
MVC DSN(44),DSNAMES Set data set name
LH R4,INLENGTH
S R4,PRELENS Subtract tran id + space + BWO ind
ST R4,DSNLEN Set data set name length
*
EXEC CICS ASKTIME ABSTIME(DATETIME)
EXEC CICS FORMATTIME ABSTIME(DATETIME) YYDDD(DTDATE) *
TIME(DTTIME)
*
PACK KEYWORK(5),RECOVPT(9) Packed date field
MVC DATEPACK(4),KEYWORK
PACK KEYWORK(5),RECOVPT+8(9) Packed time field
MVC TIMEPACK(4),KEYWORK
XC RECOVPTP(1),RECOVPTP Set century 0=1900, 1=2000
OI RECOVPTP+3,X’0F’ Set +ve sign for date
OI RECOVPTP+7,X’0F’ Set +ve sign for time
MVC BWOTIME(8),RECOVPTP Set BWO recovery point time
*
EXEC CICS SYNCPOINT
*
Chapter 18. Backup-while-open (BWO) 219
- Recovery and Restart Guide 1
- Contents 5
- Contents v 7
- What this book is about 9
- Who should read this book 9
- How to use this book 9
- Release 1 11
- Logging changes 15
- The role of CICS 16
- Recoverable resources 17
- Emergency restart backout 18
- CICS forward recovery 19
- XCF/MRO partner failures 21
- Units of work 25
- Shunted units of work 25
- Synchronization points 27
- CICS recovery manager 29
- Recovery 30
- CICS system log 33
- System activity keypoints 34
- Forward recovery logs 34
- Normal shutdown processing 37
- First quiesce stage 37
- Second quiesce stage 38
- Third quiesce stage 38
- Warm keypoints 39
- Flushing journal buffers 40
- Uncontrolled termination 42
- Cataloging CICS resources 43
- Global catalog 43
- Local catalog 44
- Warm restart 47
- Emergency restart 47
- Cold start 48
- Dynamic RLS restart 49
- Chapter 4. CICS cold start 57
- Temporary storage 59
- Transient data 59
- Monitoring and statistics 61
- Terminal control resources 61
- Dump table 62
- Chapter 4. CICS cold start 51 63
- Chapter 5. CICS warm restart 65
- Data set name blocks 66
- Transactions 68
- LIBRARY resources 68
- Programs 68
- Start requests 69
- Other backout processing 74
- CICS ARM processing 79
- Registering with ARM 80
- De-registering from ARM 80
- Failing to register 81
- ARM couple data sets 81
- Workload policies 82
- Connecting to VTAM 82
- The COVR transaction 83
- Server ARM processing 83
- Unit of work recovery 85
- Transaction backout 86
- Intrapartition transient data 88
- Auxiliary temporary storage 88
- START requests 88
- EXEC CICS CANCEL requests 90
- Backout-failed recovery 91
- Commit-failed recovery 95
- Indoubt failure recovery 96
- Cache failure support 100
- Lost locks recovery 101
- Transaction abend processing 104
- Exit code 104
- Transaction restart 105
- Terminal error processing 109
- Node error program (DFHZNEP) 109
- End user’s standby procedures 115
- Security 116
- Documentation and test plans 117
- About this task 119
- Defining log streams to MVS 120
- Defining system log streams 120
- Recovery considerations 122
- Activity keypointing 124
- Log-tail deletion 126
- Writing user-recovery data 127
- Long-running transactions 128
- Procedure 128
- What to do next 129
- Defining the log of logs 130
- Log of logs failure 131
- Reading log streams offline 131
- Adjusting local time 132
- Recovery for transactions 135
- Recovery for files 137
- VSAM files 137
- Forward recovery 138
- Backward recovery 138
- BDAM files 141
- The CSD data set 141
- Logical recovery 144
- Physical recovery 144
- Recovery for Web services 148
- Persistent message processing 150
- SAA-compatible applications 155
- Program design 155
- Processing dialogs with users 156
- Main storage areas 157
- CICS recoverable resources 157
- Terminal paging through BMS 160
- Using transient data queues 160
- Transaction failures 161
- HANDLE ABEND commands 162
- Dynamic transaction backout 162
- System failures 163
- START TRANSID commands 165
- Implicit locking for files 166
- Recoverable files 167
- XRCINIT exit 173
- XRCINPT exit 173
- XFCBFAIL global user exit 173
- XFCLDEL global user exit 174
- XFCBOVER global user exit 174
- XFCBOUT global user exit 174
- The CICS-supplied PEP 175
- Your own PEP 176
- Omitting the PEP 177
- Quiescing RLS data sets 179
- INQUIRE DSNAME 187
- INQUIRE UOWDSNFAIL 187
- SHCDS LIST subcommands 188
- CEMT command examples 190
- A special case: lost locks 192
- Overriding retained locks 192
- Post-batch processing 193
- Using the REPRO method 195
- Rebuilding alternate indexes 198
- //SYSIN DD * 200
- SHCDS FRSETRR(old_dsname) 200
- SHCDS FRUNBIND(old_dsname) 200
- Catalog recovery 209
- BWO and concurrent copy 215
- BWO and backups 215
- BWO requirements 216
- Hardware requirements 217
- How you request BWO 218
- Removing BWO attributes 220
- Systems administration 220
- BWO processing 221
- File opening 222
- File closing (non-RLS mode) 224
- Shutdown and restart 225
- Data set backup and restore 225
- VSAM access method services 226
- Forward recovery logging 227
- Chapter 19. Disaster recovery 235
- Disaster recovery testing 236
- Tier 0: no off-site data 237
- Tier 1 - physical removal 237
- Tier 3 - electronic vaulting 239
- Tier 0–3 solutions 240
- Tier 0 - 3 241
- 37453745 242
- Tier 4–6 solutions 245
- PPRC or XRC? 247
- Remote Recovery Data Facility 248
- Disaster recovery facilities 250
- Final summary 252
- Part 4. Appendixes 253
- Trademarks 256
- Bibliography 257
- Other CICS publications 258
- Accessibility 259
- SC34-7012-01 266
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