Database Reference
In-Depth Information
reMaSterING
remaster activity is performed by the lMD process, and the activity is recorded in the trace files of the lMD
process on the respective nodes.
on the holder node (prddb8) / instance (prd_8)
once the remaster operation is issued on instance 1 (prd_1), the gCS and geS process on the requesting instance
locates the current object master using the local grD and sends the remaster request via the cluster interconnect
as a message to the current holder of the object master, instance 8.
on the holder instance, the following activity is captured:
*** 2013-11-27 13:17:55.687
* received DRM start msg from 1 (cnt 1, last 1, rmno 431)
Rcvd DRM(431) AFFINITY Transfer pkey 492984.0 from 8 to 1 oscan 0.1
ftd (30) received from node 4 (12/0.30.0)
ftd (30) received from node 2 (12/0.30.0)
ftd (30) received from node 3 (12/0.30.0)
. . . . . . . . . . .
. . . . . . . . . . . . .
td (37) received from node 4 (12/0.38.0)
ftd (37) received from node 6 (12/0.38.0)
ftd (37) received from node 7 (12/0.38.0)
ftd (37) received from node 1 (12/0.38.0)
all ftds received
2013-11-27 13:17:58.130186 :
End DRM(431) for pkey transfer request(s) from 1
on the requestor node (prddb1) / instance (prd_1)
the lMD process receives a request for a new rM (remaster) operation. this is the instance that is making the
remaster request, so the message should be interpreted as master received. the request is sent by instance 1 to
the current holder of the object (instance 8). once instance 8 receives the request, it starts sending the transfer
operation. as noted from the time stamp of when the request is received, the transfer process begins immediately.
*** 2013-11-27 13:17:55.686
* kjdrchkdrm: found a new RM request
*** 2013-11-27 13:17:55.687
Begin DRM(431) (swin 0) - AFFINITY transfer pkey 492984.0 to 1 oscan 1.1
kjiobjscn 1
ftd (30) received from node 4 (12/0.30.0)
ftd (30) received from node 2 (12/0.30.0)
ftd (30) received from node 3 (12/0.30.0)
ftd (30) received from node 7 (12/0.30.0)
ftd (30) received from node 5 (12/0.30.0)
ftd (30) received from node 6 (12/0.30.0)
ftd (30) received from node 8 (12/0.31.0)
all ftds received
 
Search WWH ::




Custom Search