Each record in the transaction log is identified by an origin queue ID that consists of 64 hexadecimal characters (32 bytes). The format of the origin queue ID is determined by the Replication Agent instance, and it varies according to the primary database type.
Table 3-1 illustrates the format of the origin queue ID for the Replication Agent for UDB.
Character |
Bytes |
Description |
|---|---|---|
0–3 |
2 |
Database generation ID |
4–19 |
8 |
Operation sequence number |
20–35 |
8 |
Transaction ID |
36–51 |
8 |
First operation sequence number of oldest active transaction |
52–55 |
2 |
Operation type (begin = 0, data/LOB = 1, commit/rollback = 7FFF) |
56–59 |
2 |
LOB sequence ID |
60–63 |
2 |
Unused |
