I am using netbackup 5.1 with rman for my oracle database backups.OS is Solaris 9 with oracle 9.2.0.7 and I am unable to get a speed more than 50MB/sec. For FS backup this speed is 100MB/sec but for rman I get stucked at 50MB/sec. I don't know why I am unable to get more speed.
The library is L100 and I am using two drives for backup. By increasing number of drives or number of channels the backup speed is not going to be better. The tunning I have made so far is. NET_BUFFER_SZ as 262144 NUMBER_DATA_BUFFERS=64 SIZE_DATA_BUFFERS=1048576 The rman backup script is like this. CMD_STR=" ORACLE_HOME=$ORACLE_HOME export ORACLE_HOME ORACLE_SID=$ORACLE_SID export ORACLE_SID $RMAN target $TARGET_CONNECT_STR catalog rman/[EMAIL PROTECTED] trace /u09/rman.trc msglog $RMAN_LOG_FILE append << EOF RUN { debug io; ALLOCATE CHANNEL ch01 TYPE 'SBT_TAPE' PARMS 'BLKSIZE=1048576' MAXOPENFILES=20; ALLOCATE CHANNEL ch02 TYPE 'SBT_TAPE' PARMS 'BLKSIZE=1048576' MAXOPENFILES=20; SEND 'NB_ORA_SERV=bserver-bk,NB_ORA_CLIENT=client3-bk'; BACKUP $BACKUP_TYPE FILESPERSET 20 # recommended format FORMAT 'bk_%s_%p_%t' DATABASE; sql 'alter system archive log current'; RELEASE CHANNEL ch01; RELEASE CHANNEL ch02; # backup all archive logs ALLOCATE CHANNEL ch01 TYPE 'SBT_TAPE' PARMS 'BLKSIZE=1048576'; ALLOCATE CHANNEL ch02 TYPE 'SBT_TAPE' PARMS 'BLKSIZE=1048576'; SEND 'NB_ORA_SERV=bserver-bk,NB_ORA_CLIENT=client3-bk'; BACKUP filesperset 20 FORMAT 'al_%s_%p_%t' ARCHIVELOG ALL DELETE INPUT; RELEASE CHANNEL ch01; RELEASE CHANNEL ch02; Any idea will be highly appreciated. thanks, atif _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu