Lock timeout error trying to create a partition

I'm getting a lock timeout error attempting to partition a large BSEG table.  I have done this before successfully on other tables but for some reason this keeps failing with the following error:

Could not execute 'ALTER TABLE "OURSCHEMA"."BSEG" PARTITION BY RANGE (GJAHR) (PARTITION 1 <= VALUES < 1999, PARTITION ...' in 2:30:35.927 hours . SAP DBTech JDBC: [131]: transaction rolled back by lock wait timeout: Lock timeout occurs while waiting TABLE_LOCK of mode EXCLUSIVE(TRANSACTION_ID=128, UPDATE_TRANSACTION_ID=2123074)

NOTE: We have SUSPENDED the replication of BSEG while this partition is happening.

Anybody experience this problem?

Thanks,

-Patrick