Contents
4.4.2 DRDA Security Flows ......................................................................... 106
4.4.3 Performing the Bind Operation and Creating a
Package .................................................................................................. 136
4.4.4 Deleting an Existing Package ............................................................. 148
4.4.5 Performing aRebind Operation......................................................... 152
4.4.6 Activating and Processing Queries ................................................... 154
4.4.7 Executing aBound SQL Statement.................................................... 183
4.4.8 Preparing an SQL Statement .............................................................. 208
4.4.9 Retrieving the Data Variable Definitions of an
SQL Statement ...................................................................................... 211
4.4.10 Executing aDescribe Table SQL Statement...................................... 213
4.4.11Executing a Dynamic SQL Statement ............................................... 215
4.4.12 Returning SQL Diagnostics ................................................................ 217
4.4.13 Controlling the Amount of Describe Information
Returned ................................................................................................ 221
4.4.14 Interrupting a Running DRDA Request ........................................... 222
4.4.15 Commitment of Work in DRDA ........................................................ 225
4.4.16 Connection Reuse ................................................................................. 254
Chapter 5 Data Definition and Exchange..................................................... 261
5.1 Use of FD:OCA........................................................................................ 261
5.2 Use of Base and Option Sets.................................................................. 262
5.2.1 Basic FD:OCA Object Contained in DDM........................................ 262
5.2.2 DRDA FD:OCA Object........................................................................ 264
5.2.3 Early and Late Descriptors ................................................................. 267
5.3 Relationship of DRDA and DDM Objects and Commands.............. 270
5.3.1 DRDA Command to Descriptor Relationship ................................. 270
5.3.2 Descriptor Classes ................................................................................ 273
5.4 DRDA Descriptor Definitions ............................................................... 276
5.5 Late Descriptors ...................................................................................... 277
5.5.1 Late Array Descriptors........................................................................ 277
5.5.2 Late Row Descriptors .......................................................................... 280
5.5.3 Late Group Descriptors....................................................................... 283
5.6 Early Descriptors ..................................................................................... 296
5.6.1 Initial DRDA Type Representation .................................................... 296
5.6.2 Early Array Descriptors ...................................................................... 296
5.6.3 Early Row Descriptors......................................................................... 304
5.6.4 Early Group Descriptors ..................................................................... 315
5.6.5 Early Environmental Descriptors ...................................................... 355
5.6.6 Late Environmental Descriptors........................................................ 410
5.7 FD:OCA Meta Data Summary .............................................................. 412
5.7.1 Overriding Descriptors to Handle Problem Data ........................... 416
5.7.2 MDD Materialization Rules................................................................ 419
5.7.3 Error Checking and Reporting for Descriptors ............................... 420
5.8 DRDA Examples ..................................................................................... 422
5.8.1 Environmental Description Objects .................................................. 422
5.8.2 Command Execution Examples......................................................... 426
Chapter 6 Names ....................................................................................................... 443
6.1 End Users ................................................................................................. 444
6.1.1 Support for End-User Names............................................................. 444
6.2 RDBs.......................................................................................................... 445
iv Open Group Standard (2011)
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