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and automatically limited remote I/O size cannot be identified. If the REMOTEIOSIZE exceeds

current hardware or software limitations, RESTORE returns this error:

TABLENAME *ERROR* Guardian error: 21 (BulkWrite)

You must repeat the operation using a smaller REMOTEIOSIZE.

• The default ENSCRIBE I/O transfer size is equal to BLOCKSIZE, but you can use REMOTEIOSIZE

to reduce it if you need to because of Expand limitations.

SCRATCHVOL

The SCRATCHVOL option specifies a disk volume where BACKUP is to create the temporary files

used in the DP1-to-DP2 conversion process. Use this option when converting nonpartitioned files

or individual partitions of partitioned files.

SCRATCHVOL $volume

$volume

is the name of a disk volume.

Guidelines

• If you omit this option, BACKUP creates temporary files (with prefix ZZCV) on the current

default volume and subvolume.

• Use this option if disk space is inadequate during a file conversion (if BACKUP returns error

43).

• You cannot use wild-card characters with this option.

SHAREOPEN

The SHAREOPEN option causes files to be backed up with shared-read access instead of

protected-read access. This gives other processes read/write access to the backup files during

BACKUP procedures.

SHAREOPEN

CAUTION: If you restore a file that was modified while being backed up, file-system error 59

(file is bad) can occur, and data can be lost. File inconsistencies are not detected during BACKUP

or RESTORE but might be discovered when the file is subsequently accessed.

NOTE: Backup always opens the ZTMFAT subvolume with SHAREOPEN option, irrespective of

whether SHAREOPEN has been specified or not.

Guidelines

• Because use of the SHAREOPEN option presents some risk to data integrity, this message

appears when the option is used:

*WARNING-7139* The backup files may be opened for writebecause the SHAREOPEN option was used for Backup.

This may

result in inconsistent file data on the backup tape.

This warning message also appears before a BACKCOPY or RESTORE that uses a BACKUP

tape made by using the SHAREOPEN option.

• You cannot use OPEN and SHAREOPEN in the same BACKUP command.

• Backup always opens TMF audit trail files with SHAREOPEN access irrespective of whether

SHAREOPEN access has been specified or not.

BACKUP Options 67

HP BACKCOPY User Manual

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