CA Dynam for VSE User Guide

Direct Access File Independence Facility (VCKD)
// EXEC VCKDBKRS
RESTORE
/*
/&
Clear Disk Utility (VCKDCLDK)
The VCKD Clear Disk Utility (VCKDCLDK) program allows the user to format a
Direct Access file that will reside on an FBA disk device. If a user program does
not perform at a DA file using a WRITE RZERO or WRITE AFTER formatting
write, then VCKDCLDK must be executed. The utility control statements are
compatible with the IBM CLRDK program.
VCKDCLDK Control Statement Syntax
This program uses two different control statements: // UCL and // END. Apply
the following rules:
• All operands are optional.
• Separate all operands with commas.
• Include an END statement.
Control Statement Format
// UCL B=(K=k,D=d) [,C'c'|X'xx'][,OY|ON] [,E=(eeee)|RECORD]
// END
UCL
B=(K=k,D=d)
Specifies entry to clear disk utility.
Specifies key and data block length.
k the length (in bytes) of the key (default is 0)
d the length (in bytes) of the data block (default is 100)
C'c'|X'xx'
OY|ON
Identifies EBCDIC (C) or hexadecimal (X) fill character enclosed in single
quotation marks (default is x'00').
Identifies output option.
OY
ON
Write disk check. (OY is the default.)
Do not write disk check.
E=(eeee)|RECORD Specifies emulated CKD device type. Valid entries are: 2311, 2314, 3330,
3340, and 3350, enclosed in parentheses. RECORD indicates record-mapping
support. If this operand is omitted, the default is 2311.
6–50 User Guide