1.2.3.1.4 Parameter(s)

DB PCB
Contains all the DB related information, especially the DB name.
AIB
Specifies the AIB for the call. This parameter is an input and output parameter.
These fields must be initialized in the AIB:
AIBID Eye catcher.
This 8-byte field must contain DFSAIBbb.
AIBLEN AIB lengths.
This field must contain the actual length of the AIB that the application program obtained.
AIBRSNM1 Resource name.
This 8-byte, left-justified field must contain the name of a DB PCB.
AIBOALEN I/O area length.
This field must contain the length of the I/O area specified in the call list
I/O Area
Used to receive the returned segment.
SSA:
Number of SSA is less than or equal to min. (number of hierarchy levels, 15).
RSA:
Specifies the area in your program that contains the record search argument. This required input parameter is only used for GSAM.

Note:

The RSA "00010000" resets the position to the start of the GSAM.