The following settings and configurations maybe optimized in high volume transactions to achieve higher performance.
STATUS_BEAT_LCR
This determines how often a log message is written showing number of processed LCRs (in LCR count) (use 0 to disable). As of Dbvisit Replicate 2.3.14 the default is 10,000. For high volume configurations consider increasing to higher number.
OCI_COMMIT_MODE = NOWAIT BATCH
This may improve apply processing speed. Only set for non RAC target systems. See Configuration Variable Reference for more information.