The standard parcel header format (SPH) contains a 2‑byte flavor field and a 2‑byte length field. This format limits the length of the parcel to 65536 bytes.
The alternate parcel header (APH), extends the limit to 1 MB. The APH format contains a 2‑byte flavor field, a 2‑byte reserved field, and a 4‑byte length field.
Note: dbcarea.consider_APH_resps must be set to ‘Y’ to receive APH responses.
The following lists the parcel flavor, name, and description.
|
Parcel Flavor |
Name |
Description |
|
1 |
Req |
Record mode request parcel |
|
2 |
RunStartup |
Startup parcel |
|
3 |
Data |
Data parcel |
|
4 |
Resp |
Response parcel |
|
5 |
KeepResp |
Keep response parcel |
|
7 |
Cancel |
Cancel parcel sent to cancel the stored procedures multi-tsr parcel |
|
13 |
FMReq |
Field mode request parcel |
|
14 |
FMRunStartup |
Field mode startup request |
|
32 |
NOP |
No operation parcel |
|
68 |
IndicData |
Data parcel containing indicator bytes |
|
69 |
IndicReq |
Indicator mode request parcel |
|
71 |
DataInfo |
Data info parcel |
|
72 |
IVRunStartup |
Indicator mode startup request |
|
85 |
Options |
Parcel for request |
|
120 |
CursorHost |
Cursor parcel sent by host |
|
128 |
MultiTsr |
Multi TSR parcel used by stored procedures |
|
129 |
SPOptions |
Stored procedures options parcel |
|
140 |
MultipartData |
MultipartData parcel |
|
141 |
EndMultipartData |
End MultipartData parcel |
|
142 |
MultipartIndicData |
Multipart Indic data parcel |
|
143 |
EndMultipartIndicData |
End Multipart Indic data parcel |
|
146 |
DataInfoX |
Datainfox parcel |
|
147 |
MultipartRunStartup |
MultipartRunStartup parcel |
|
148 |
MultipartRequest |
MultipartRequest parcel |
|
153 |
ExtResp |
New extended response parcel |
|
154 |
ExtKeepResp |
New extended keep response parcel |
|
157 |
SETPOSITION |
Cursor positioning request |
|
158 |
ROWPOSITION |
Row position to which cursor needs to be repositioned. |
|
159 |
OFFSETPOSITION |
From where the LOB data should be returned. |