TurboIMAGE/XL Database Management System Reference Manual (30391-90012)
Table Of Contents
- 1 Introduction
- 2 Database Structure and Protection
- 3 Defining a Database
- 4 Using the Database
- 5 TurboIMAGE/XL Library Procedures
- Using TurboIMAGE/XL Intrinsics
- DBBEGIN
- DBCLOSE
- DBCONTROL
- DBDELETE
- DBEND
- DBERROR
- DBEXPLAIN
- DBFIND
- DBGET
- DBINFO
- INTRINSIC NUMBER 402
- Syntax
- Parameters
- Discussion
- Mode 101: Item Number
- Mode 102: Item Name
- Mode 103: Items in Database
- Mode 104: Items in Data Set
- Mode 113: BTREEMODE1 and Wildcard Character
- Mode 201: Set Number
- Mode 202: Set Name
- Mode 203: Sets in Database
- Mode 204: Sets with Item
- Mode 205: Set Capacity
- Mode 206: Number of Data Set Chunks
- Mode 207: Size of Data Set Chunks
- Mode 208: Primary and Actual Capacity
- Mode 209: B-Tree Attachment
- Mode 301: Paths
- Mode 302: Key or Search Item
- Mode 401: Logging
- Mode 402: ILR
- Mode 403: Dynamic Roll-Back
- Mode 404: Logging Subsystem Information
- Mode 406: Database Information
- Mode 501: Subsystem Access
- Mode 502: Critical Item Update
- Modes 8nn: Third-Party Indexing
- Mode 901: Language
- DBLOCK
- DBMEMO
- DBOPEN
- DBPUT
- DBUNLOCK
- DBUPDATE
- DBXBEGIN
- DBXEND
- DBXUNDO
- 6 Host Language Access
- Model Program
- ORDERS Database Model Program
- Main Body of Program
- Opening the Database
- Retrieving All the Records on a Chain (with Item Level Locking)
- Retrieving a Data Entry Using a Record Number
- Retrieving Master Data Using a Key Value
- Retrieving Data Serially (with Set Level Locking)
- Adding an Entry
- Updating an Entry
- Deleting an Entry
- Rewinding a Data Set
- Obtaining Database Information
- Obtaining Error Messages and Explanations
- Closing the Database
- C
- COBOL II
- Defining Data Types, Variables, and Intrinsics
- Main Body of Program
- Opening the Database
- Retrieving All the Records on a Chain (with Item Level Locking)
- Retrieving a Data Entry Using a Record Number
- Retrieving Master Data Using a Key Value
- Retrieving Data Serially (with Set Level Locking)
- Adding an Entry
- Updating an Entry
- Deleting an Entry
- Rewinding a Data Set
- Obtaining Database Information
- Obtaining Error Messages and Explanations
- Closing the Database
- FORTRAN 77
- Pascal
- RPG
- 7 Logging and Recovery
- Database Utilities Used in Logging and Recovery
- Recovery Options
- Logical Transactions
- Dynamic Roll-Back Recovery
- Intrinsic Level Recovery
- Logging Preparation
- Step 1--Checking MPE/iX Logging Configuration
- Step 2--Acquiring Logging Capability
- Step 3--Logging to Tape or Disk
- Step 4--Building a Log File for Logging to Disk
- Step 5--Creating the Log Identifier
- Step 6--Setting the Log Identifier
- Step 7--Setting Flags for the Database Backup Copy
- Step 8--Making a Database Backup Copy
- TurboSTORE/iX 7x24 True-Online Backup
- Logging Status
- Logging Maintenance
- Roll-Forward Recovery
- Roll-Back Recovery
- DBRECOV Commands Used with Roll-Forward and Roll-Back Recovery
- Recovery Tables
- Post-Recovery Options
- The Mirror Database
- 8 Using the Database Utilities
- Restructuring the Database with TurboIMAGE/XL Utilities
- Summary of Utility Routines
- Utility Program Operation
- DBLOAD
- DBRECOV
- >CONTROL
- >EXIT
- >FILE
- >RECOVER
- >ROLLBACK
- >RUN
- DBRESTOR
- DBSTORE
- DBUNLOAD
- DBUTIL
- >>ACTIVATE
- >>ADDINDEX
- >>CREATE
- >>DEACTIVATE
- >>DETACH
- >>DISABLE
- >>DROPINDEX
- >>ENABLE
- >>ERASE
- >>EXIT
- >>HELP
- >>MOVE
- >>PURGE
- >>REBUILDINDEX
- >>REDO
- >>RELEASE
- >>SECURE
- >>SET
- >>SHOW
- Syntax
- Parameters
- Example (Show Users)
- Example Discussion
- Example (Show All)
- Example Discussion
- Example (Show Capacity)
- Format of Show Device List
- Example (Show Device)
- Format of Show Indices
- Example (Show Indices)
- Format of Show Locks List
- Example 1 (Show Locks)
- Example 1 Discussion
- Example 2 (Show Locks)
- Example 2 Discussion
- >>VERIFY
- 9 Using a Remote Database
- 10 Internal Structures and Techniques
- 11 B-Tree Indices
- A Error Messages
- B Results of Multiple Access
- C Database Design Considerations
- D Multiple Calls to DBLOCK
- E TurboIMAGE/XL Log Record Formats
- F MPE/iX Log Record Formats
- G Recovery and Logging Quick Reference
- H TurboIMAGE/XL versus TurboIMAGE/V
Index
Index 699
file system and memory management
error messages, 541
LISTLOG command, of MPE/iX, 327
lock area, 496
lock descriptors
sort sequence, 656
locking
accessor entries, 496
and dynamic transactions, 319
and transactions, 318
descriptor entries, 496
requirements, 317
set entries, 496
locking/unlocking
and logging, 314
conditional, 657
internals, 496
performance, 652
remote databases, 658
LOCKS option, of DBUTIL, 453
locks, showing, 459
LOG command, of MPE/iX, 339
log file
building, 326
size, determining, 378
time stamps, 344
log identifier
creating, 327
setting in root file, 330, 448
log records, 344
file reference, 397
fmode, 397
formats, MPE/iX, 665
formats, TurboIMAGE/XL, 659
rmode, 397
user reference, 397
logging
acquiring capability, 324
and locking, 318
and recovery utilities, 309
CHANGELOG capability, 341
checking MPE/iX configuration, 324
considerations, 314
cycle, 343
cycle, sample job stream, 674
DBSTORE flag, 409
device, quick reference, 673
disable, 428
displaying status, 338
enable, 432
erasing the database, 435
flags, 330, 340
flags and database backup copy, 330
format records, 344
initiating process, 339
maintaining, 339
overview, 314
preparation, 324
process, controlling, 377
quick reference, 673
re-enabling, 340
statistics, 363
time stamp, 344, 395
to disk, 325, 326
to disk, quick reference, 673
to tape, 325
to tape, quick reference, 673
LOGGING option, of DBUTIL, 428, 432
logical transaction
and locking, 317
definition of, 315
LOGID option, of DBUTIL, 448, 453
LOGINFO option, of DBUTIL, 453
M
MAINT option, of DBUTIL, 448, 453
maintenance word
changing or removing, 448
making a database backup copy, 332
master data set
media records, 479
space allocation for, 494
maximum size, 487
MDBX parameter, of DBRECOV, 392, 395
media records, 478
memory management error messages, 541
methods, remote database-access, 466
migrating secondaries
entries, 494
migration utility, 489
mirror database, 366
MODE4 parameter, of DBRECOV, 395
MODEX parameter, of DBRECOV, 392, 395
modify intrinsics, 485
MOVE command, of DBUTIL, 439
moving
files across devices, 439
from MPE/iX to MPE V, 691
to TurboIMAGE/XL, 682
MPE/iX
cleanup mode, 353, 358
COMMAND intrinsic and DS, 466
log record formats, 665
WRITELOG records, 659