The format of the SHOWCB macro used to display fields in a request parameter list is:
[label] |
SHOWCB |
RPL=address |
---|
Subparameter | Fullwords | Description of the Field |
---|---|---|
ACB | 1 | Address of the access method control block that relates the request parameter list to the data. |
AIXPC 1 | 1 | Number of alternate index pointers. |
AREA | 1 | Address of the return area the program uses to process a data record for the access as defined by the request parameter list. |
AREALEN | 1 | Length of the return area whose address is given in AREA. |
ARG | 1 | Address of the field containing a search argument, if search arguments are being used. |
ECB 1 | 1 | Address of an event control block, if any, in which VSAM indicates the completion of requests defined by the request parameter list. |
FDBK 1 | 1 | Reason code that VSAM puts into the feedback field to describe the error detected for the preceding request. (The meaning of this code depends on the contents of register 15, which indicates whether the request was successful or failed because of a logical or physical error. See Record management return and reason codes.) |
FTNCD 1 | 1 | Code that describes the function in which a logical or physical error occurred; indicates whether the upgrade set may have been modified incorrectly by the preceding request. (The meaning of this code depends on the contents of register 15, which indicates whether the request was successful or failed because of a logical or physical error. See Record management return and reason codes.) |
KEYLEN | 1 | Length of the search argument, if a generic key is used for a search argument. |
MSGAREA 1 | 1 | Address of the area, if any, into which VSAM puts physical error messages. |
MSGLEN | 1 | Length of the message area, if any. |
NXTRPL | 1 | Address of the next request parameter list, if another one is chained to this one. |
RBA 1 | 1 | Relative byte address of the most recently processed record; you could use it to record the RBAs of records that you are retrieving or storing sequentially or by key. |
RECLEN 1 | 1 | Length of the data record, access to which is defined by the request parameter list. |
RPLLEN | 1 | Length of a request parameter list. |
TRANSID | 1 | Number that relates modified buffers in a buffer pool; described in z/OS DFSMS Using Data Sets. |
XRBA 1 | 2 | The return area (you are providing for VSAM for display) is two full words long to contain values possibly greater than 4GB. |