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6.6.20: Administering transactions (overview) >
6.6.20.0: Transaction properties
- Application is recoverable
- Indicates whether the application is recoverable. Recoverable processes
(sometimes called recoverable applications) have the ability to undo operations on data
when a transaction aborts, and they can recover modifications to data in the case of a
system failure.
- Local ID
- Indicates a Transaction identifier (TID), a unique ID assigned to each transaction to identify all
actions associated with that transaction. Each TID is unique to a given server and is
known only by that server.
- Global ID
- Indicates an identifier that ties a transaction to all of its participating applications across
different servers.
- Top Level
- Indicates a transaction that does not run within the scope of another transaction. A top-level
transaction is the root of a transaction family, even if it is the only transaction in the
family.
- Local State
- Indicates the state of a subtransaction visible only to its parent transaction.
- Global State
- Indicates the state of a transaction from the perspective of the transaction coordinator. This
state is based on the local state of all the participants of the transaction.
- Beginner Application
- Indicates the application that originated the transaction.
A transaction family consists of all nested transactions that share a
common ancestor. All members of a transaction family commit together and drop their locks
simultaneously.
- Parent
- Indicates a transaction that starts another transaction. Subtransactions are called child
transactions.
- Top Ancestor
- When transactions are nested, this value indicates the transaction that is the parent of the entire tree
(family) of transactions.
- Descendants
- Indicates all subtransactions (child transactions) in a family of transactions.
- Family Begin Time
- Indicates the time that the transaction family was started.
- Application properties
- Indicates the application properties associated with the transaction. These
properties are for use by IBM support only.
- System properties
- Indicates the system properties associated with the transaction. These properties
are for use by IBM support only.
A participant is an application that takes part in a transaction. An
application is considered a participant in a transaction if it either initiates the
transaction or receives a request on behalf of the transaction.
- Direct participant list
- Indicates the applications that are direct participants in the transaction.
- Indirect participant list
- Indicates the applications that are indirect participants in the transaction.
- Family participant list
- Indicates the transaction family members participating in the transaction.
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