NET/MASTER Management Services (MS) Command Reference Manual

LBANNER
UDBCTL OPEN
NonStop NET/MASTER MS Commands
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The UDB ID is the logical name used by FILE verbs in NCL processes to access the
UDB or UDB pair. (For a UDB pair, the UDB ID refers to both files in the pair.)
The UDB ID provides a logical connection between NCL and the UDB or UDB
pair. A UDB or UDB pair must have a UDB ID before an NCL process can work
with it.
udb-id
specifies a UDB ID for the UDB or UDB pair. You can specify a UDB ID from
one through eight characters long, beginning with a character other than a
digit. It can contain the following characters:
Alphabetic characters: A through Z and a through z
Numeric characters: 0 through 9
Other characters: # $ @ _
*
specifies a UDB ID for the UDB or UDB pair. For a UDB, the UDB ID is the
unqualified part of the file specification. For a UDB pair, the UDB ID is the
unqualified part of the second file specification.
ACCESS
specifies the Tandem Disk Process 2 (DP2) caching strategy for the UDB or UDB
pair.
RANDOM
specifies random access.
SEQUENTIAL
specifies sequential access.
SYSTEM
instructs DP2 to determine the caching strategy.
BUFFERED
opens the UDB or the first file in a UDB pair to use buffered writes. This specifies
that records are to be buffered in cache memory before being transferred to the
UDB or the first file in a UDB pair. If you specify both the BUFFERED and INPUT
operands, BUFFERED is ignored.
For a UDB pair, the BUFFERED operand applies only to the first UDB in the pair.
Even though the second UDB is given the BUFFERED attribute, the attribute is not
used. (The attribute is displayed for both UDBs, however, by the SHOW UDB
command.)