VVR replication Error

Hi gurus,
we have VVR running on solaris 8, now the replication is showing connected
state but in behind state. i had tried pause rlink but it throwed up
error.details follows.

root:db01> vxrlink -g datadg -r oraclervg pause rlk_10.2.135.26_oraclervg
VxVM VVR vxrlink ERROR V-5-1-10128  Transaction aborted waiting for io drain

root:db01> vradmin -g datadg -l repstatus oraclervg
Replicated Data Set: oraclervg
Primary:
  Host name:                  db01
  RVG name:                   oraclervg
  DG name:                    datadg
  RVG state:                  enabled for I/O
  Data volumes:               4
  VSets:                      0
  SRL name:                   srl
  SRL size:                   204.24 G
  Total secondaries:          1

Secondary:
  Host name:                  devel01
  RVG name:                   oraclervg
  DG name:                    datadg
  Rlink from Primary:         rlk_10.2.135.26_oraclervg
  Rlink to Primary:           rlk_10.2.135.27_oraclervg
  Configured mode:            asynchronous
  Latency protection:         off
  SRL protection:             autodcm
  Data status:                consistent, behind
  Replication status:         replicating (connected)
  Current mode:               asynchronous
  Logging to:                 SRL (104227993 Kbytes behind, 48% full)
  Timestamp Information:      behind by 53h 33m 56s
  Bandwidth Limit:            N/A

rgds
-d