Description of RW trace points

 

This topic collection discusses the RW trace points.

• RWff RC—Receive Data Stream Trace Point
  This data stream contains a DDM response from an application server (AS) program. The DSS headers are present in this data stream.

• RWff SN—Send Data Stream Trace Point
  This data stream contains either a distributed data management (DDM) request from an application requester (AR) program, or a DDM response from an application server (AS) program, as that request or response exists before it is given to the lower level CN component for addition of headers and transmission across the wire.

• RWQY S1—Partial Send Data Stream Trace Point 1
  This trace point occurs in the NEWBLOCK routine of the QRWTQRY module when a new query block is needed in the building of QRYDTA in the like environment.

• RWQY S2—Partial Send Data Stream Trace Point 2
  This trace point occurs in the NEWBLOCK routine of the QRWTQRY module when a new query block is needed in the building of QRYDTA in the unlike environment.

• RWQY BP—Successful Fetch Trace Point
  This trace point occurs in the FETCH routine of the QRWTQRY module when a call to the SQFCHCRS macro results in a non-null pointer to a BPCA structure, implying that one or more records were returned in the BPCA buffer.

• RWQY NB—Unsuccessful Fetch Trace Point
  This trace point occurs in the FETCH routine of the QRWTQRY module when a call to the SQFCHCRS macro results in a null pointer to a BPCA structure, implying that no records were returned in the BPCA buffer.

• RWQY P0—Result Set Pseudo-Open
  The associated information is the package list entry.

• RWQY AR—Array Result Set Processed
  The associated information is the array result set control block.

• RWQY DA—Array Result Set SQLDA
  The associated information is the array result set SQLDA.

• RWQY DO—Debug Options
  The associated information is a modified version of the QRWOPTIONS string.

• RWQY L1 and RWEX L1—Saved in Outbound LOB Table Trace Point
  These trace points record the address and other information about a large object (LOB) column saved by QRWTQRY or QRWTEXEC for later transmission to an application requester.

• RWQY L2 and RWEX L2—Built in Datastream from LOB Table Trace Point
  These trace points record the address and other information about a large object (LOB) column copied by QRWTQRY or QRWTEXEC to the communications buffer.

• RWQY L0 and RWEX L0—Saved in Inbound LOB Table Trace Point
  These trace points record the address and other information about a large object (LOB) column saved by QRWTQRY or QRWTEXEC for later construction of an SQL descriptor area (SQLDA) for input to the database management system (DBMS).

• RWAC RQ—Access RDB Request Trace Point
  This trace point occurs on entry to either the QRWSARDB module at a DRDA application requester (AR), or the QRWTARDB module at an application server (AS).

• RWAC cb—Access RDB Control Block Trace Points
  The trace points identify control blocks that are associated with functions that are provided by the QRWSARDB module.

• RWSY FN: SYNCxxx [TYPE:x]—Source TCP SYNC/RESYNC Trace Point
  This source-side trace point records various commands and replies flown in the execution of TCP/IP two-phase commit operations.

• RWSY xx: yyyyyyy...—Target TCP SYNC/RESYNC Trace Point
  This target-side trace point records various information. The type of information is identified by the two characters represented by xx.

• RW_ff_m—Application Requester Driver Control Block Trace Point
  This trace point displays the contents of the Application Requester Driver (ARD) control blocks for the different types of ARD calls that can be made. It displays three different types of control blocks: input formats, output formats, and SQLCAs.

 

Parent topic:

Interpreting data entries for the RW component of trace job