CA Dynam for VSE User Guide

Disk File Maintenance Utilities
OPEN Command
The OPEN command selects options for the tape file to be dumped/restored.
This command is only necessary to override default options for processing the
tape. Otherwise, the open will take place on the first DUMP, RESTORE, REORG,
or LISTTAPE command encountered, using the default file name and logical
unit. For more information, see Overview Of DYNUTIL.
This command has the following format:
OPEN dtfname ([REW|NORWD] [SYSnnn] [HDRINFO] [INPUT|OUTPUT])
dtfname
Identifies the file name or DTFname of the tape file to be opened. A TLBL
statement must be included in the job stream for this file name.
Optional Parameters
The following parameters are optional. REW and NORWD are mutually
exclusive.
REW
NORWD
SYSnnn
HDRINFO
INPUT
OUTPUT
Rewinds the tape to load point (the default option).
Indicates that the tape is not to be rewound.
Specifies the logical unit to be used in assigning the tape. If omitted, the
default is SYS005 for dtfname DUMP and SYS006 for all other dtfnames.
Prints information related to the standard labeled tape on SYSLOG. If this is
desired, you must specify HDRINFO, because it is not the default.
Opens the tape file for input prior to the RESTORE, REORG, or LISTTAPE
function. It is the default.
Opens the tape file for output prior to the DUMP function. Overrides the
default, INPUT.
Notes on the OPEN command:
• The options defined within parentheses can be specified in any order and
must be separated by one or more blanks.
• The OPEN and CLOSE commands are provided to allow user control of tape
data sets. This allows usage of any number of tape files during a single
execution of DYNUTIL.
• If you issue an OPEN immediately following a CLOSE (rewind), you can get
message CADT004 requesting a volume mount. This occurs because OPEN
AVR processing starts while the REWIND is still in progress. Wait until the
rewind is complete and then reply END/ENTER.
Chapter 5: Supporting Disk File Management 5–25