Journal limits

This topic provides system limits for journals, such as the size of a journal receiver, the length of a single journal entry, and the maximum sequence number for journal entries.

Table 1. Journal limits
Journal limits Value
Maximum size of a single journal receiver Approximately 1 terabyte
Maximum length of a single journal entry (bytes) 4 000 000 000 bytes
Start of changeMaximum length of a single journal entry that can be written using the Send Journal Entry (QJOSJRNE) APIEnd of change Start of change15 761 440 bytesEnd of change
Maximum sequence number for journal entries 18 446 744 073 709 551 600
Start of changeMaximum number of objects that can be associated with one journal1End of change Start of change10 000 000End of change
Start of changeMaximum number of objects allowed on a single APYJRNCHG or RMVJRNCHG commandEnd of change Start of change10 000 000End of change
Maximum number of journal receivers allowed in a range of receivers on a journal command 1024
Maximum number of remote journal target systems for broadcast mode 255
Start of changeMaximum number of active commitment definitions with object-level changes that can be processed concurrently by an APYJRNCHG or APYJRNCHGX commandEnd of change Start of change1023End of change
Note:
  1. This maximum includes objects whose changes are currently being journaled, and journal receivers that are associated with the journal. If the number of objects is larger than this maximum, journaling does not start.
Parent topic: Maximum capacities