In-Doubt Resolution - IBM IMS Interface for Teradata

IBM IMS Interface for Teradata® Reference

Product
IBM IMS Interface for Teradata
Release Number
17.00
Published
June 2020
Language
English (United States)
Last Update
2020-06-19
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B035-2447
Product Category
Teradata Tools and Utilities
It is possible for a failure to occur during the 2PC session during one of the following circumstances:
  • The communication link between the coordinator, such as IMS, and the participant, such as the database, is lost.
  • There is an IMS system crash.
  • A participant, such as DB2, experiences a system failure.

When the electrical power, system, or communication line is restored after a failure, the coordinator reconciles existing activity logs from the coordinator and the participants.

If the logs cannot be reconciled, then in-doubt resolution is necessary.

There are two forms of in-doubt resolution: automatic and manual.