Hello folks...
We've just found that out backup tapes give a error when reading a
block from our
(full) backup tapes. BAD news... details are:
Backups done via SAP's BRbackup which calls cpio -> NSR to perform a
DB backup
of tables.
This table is 4 Gig exactly (SAP uses cpio)
The same error is seen on all three of out backups, same table, same
point.
nwrecover: Unable to read checksum from save streamnwrecover:
error recovering
./sapdata3/btabd_1/btabd.data1
Error encountered on the following files by NSR server
`waltp51p.gecits.ge.com': can not read
record 12500 of file 131 on tz89 tape brbackup.014
./sapdata3/btabd_1/btabd.data1 _at_ Wed Dec 10 04:42:41
1997
nwrecover: Requesting remaining 2 files from NSR server
`waltp51p.gecits.ge.com'
./sapdata2/btabi_1/btabi.data1
./sapdata2/btabi_1/btabi.data1: file exists, overwriting
nwrecover: Unable to read checksum from save streamnwrecover:
error recovering
./sapdata2/btabi_1/btabi.data1
Error encountered on the following files by NSR server
`waltp51p.gecits.ge.com': can not read
record 12500 of file 113 on tz89 tape brbackup.011
./sapdata2/btabi_1/btabi.data1 _at_ Wed Dec 10 04:42:38
1997
No errors were seen in the BRbackup logs, error shows up during
restore.
_______________
- Could cpio have a problem with > 4gig files
- If it is data corruption, in the table, how come it wasn't seen
during backup.
NOTE: The database and files were fine before this full restore
attempt.
(were in stress test, test->restore->test->restore
etc........)
Config:
DU 4.0b SAP 3.1g Oracle 7.2.3 NSR 4.3
Received on Wed Dec 17 1997 - 00:34:54 NZDT