Open Intent
Open Intent shows parameters the program supplied when it opened the data set. This field can help you to better understand how the measured program accesses the data set.
The non-VSAM values are:
Method |
Description |
EXTEND |
The data set is treated as an OUTPUT data set, but records are added to the end of the data set regardless of what was specified on the DISP parameter of the DD statement. |
INOUT |
The program accesses this data set first for input and later, without reopening the file, for output. |
INPUT |
The data set is opened for INPUT. |
OUTIN |
The program accesses this data set first for output and later, without reopening the file, for input. |
OUTINX |
The data set is treated as an OUTIN data set, except that records are added to the end of the data set regardless of what was specified on the DISP parameter of the DD statement. For PDSEs, OUTINX is equivalent to OUTPUT. |
OUTPUT |
The data set is opened for OUTPUT. (For BDAM, OUTPUT is equivalent to UPDAT.) VSAM access allows both input and output operations against the file. |
RDBACK |
The data set is an input data set positioned to read backward. This option is supported only for magnetic tape. |
UPDAT |
The data set is to be updated in place or, for BDAM, blocks are to be updated or added. |
The VSAM values are:
Method |
Meaning |
DIR |
The data set is accessed with direct access. |
INPUT |
The data set is used for retrieval of records (the ACB specifies the 'IN' MACRF option). |
DYN |
The data set's index component is processed randomly, which most frequently indicates that the COBOL program specified 'ACCESS IS DYNAMIC'. |
I-O |
The data set is for input and output access (the ACB specifies both 'IN' and 'OUT' MACRF value). |
LOAD |
Records are written to the data set in load mode. |
OUTPUT |
The data set is used for storage of new records (the ACB specifies the 'OUT' MACRF value.) |
SEQ |
The data set is access with sequential access. |
SKP |
The data set is accessed with skip-sequential access. |
More about the Data Set Characteristics report