The following messages are observed in target event_log where the source is Oracle and the target is SQL Server:
sp_ctrl (VMS10-PD:2100)> show log reverse
Notice 2018-10-01 16:34:07.958000 4488 4492 Poster: Serializer invalid op(22) ODR_USEQ (posting from o.SID1, queue queue_name, to r.SID2) [module opx]
Notice 2018-10-01 16:34:07.958000 4488 4492 Poster: Serializer invalid op(22) ODR_USEQ (posting from o.SID1, queue queue_name, to r.SID2) [module opx]
At the time of creation of this article which dates to SharePlex version 9.1.3, the replication of sequences is not supported for open targets. Though this will not result in any errors as far as replication is concerned, the messages are of annoyance. To resolve this, disable sequence replication by configuring the following parameter on source:
sp_ctrl> stop capture
sp_ctrl> set param SP_OCT_REPLICATE_SEQUENCES 0
sp_ctrl> start capture
