Delete records in PDL (800xA v4.1)
Hmm... I'm no pro on PDL... so please take this with a grain of salt:
1) Reduce storage setting for PDLMSGLOG to cause log to wrap earlier, wait for wrapping to occur, then extend it again.
3BUF001092R4101, page 190
2) hsdbmaint has a Reinitialize Logs feature which may erase the log.
3BUF001092R4101, page 592