Backup :
Database tables are not directly copied to netbackup .
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bporaexp/bporaexp64 utility
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RMAN (oracle recovery manager ) is responsible for
performing backups and restores . Rman can’t directly access media and devices
it uses netbackup for oracle to uses the devices .
Rman does three things . identifies whether the opearation
is backup or restore
What to backup or restore (Rman)
Submits a request for media server to accessing the media
and devices for (backup/Restore ) using linking libobk or orasbt.dll
Process : Nbrb
will be intaited on media servers
Nbrb
will get the resources from emm
Controlls the flows of data into/out of databases
Process : Rman
access the devices and bpbkar gets started and send the data . (Backup)
Rman
access the devices and tar gets started and send the data . (Restore)
Once it gets the resources
Bpbkar gets intiates on
clients .
Sends data to media
server ( bpbkar puts data from client disk to networkà child bptm puts data
from network to shared memory à
parent bptm puts data from shared memory to disk )
Rman uses restore command to start restores
Using netbackup library
libobk talks to media server via bpcd to get resource
Once it gets the
resources
Tar gets initated on
the client and transfers data to client from media server
Parent bptm reads
data from tapes/disk of mediaserver and puts in buffersà child bptm puts data
from shared memory to network -à
tar reads data from network to client disk
Scripts:
/usr/openv/netbackup/ext/dbext/oracle/samples
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