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 varies according to the primary database type.
|
Character |
Bytes |
Description |
|---|---|---|
|
0–3 |
2 |
Database generation ID |
|
4–15 |
6 |
System change number |
|
16–19 |
2 |
System change number generation ID |
|
20–23 |
2 |
Redo log thread |
|
24–43 |
10 |
Redo log record block address |
|
44–55 |
6 |
System change number of the oldest active transaction begin |
|
56–63 |
4 |
Locator ID |