z/VM: System Messages and Codes Š CP - z/VM - IBM

ALP003 ALT002
VMDFR1ST should point to the first frame on the list,
and VMDFRLST should point to the last frame on the
list. FRMFPNT is the forward pointer to the next frame
on the list, and FRMBPNT is the backward pointer to
the previous frame on the list. The frame being
unchained at the time of the abend may not have been
chained properly on the user-owned frame list. Another
possibility is that the FRMOWNED flag is not on in the
frame table entry, indicating that this frame may not
belong to this VMDBK. R14 points to the address in
HCPALP where CP detected the abend.
ALP003
Explanation: The available list replenishment function
was attempting to take a frame from a user-owned
frame list, but the frame state was incorrect.
User Response: FRMPTE field in the frame table
entry contains an address of zero. This indicates the
frame is incorrect, since it is on a user-owned frame list
but does not point to a valid page table entry. Inspect
the process of chaining and unchaining frames from the
user-owned frame list. Examine the dump to determine
the VMDBK or SNTBK control block that owns the
frame. R14 points to the address in HCPALP where CP
detected the abend.
ALS002
Explanation: The available list replenishment function
was attempting to take a frame from a user-owned
frame list, but the frames on the list were chained
improperly. It may also be that a frame on the
user-owned frame list does not have the FRMOWNED
bit on.
User Response: Inspect the process of chaining and
unchaining frames from the user-owned frame list.
Examine the dump and determine the VMDBK or
SNTBK that owns the user-owned frame list.
VMDFR1ST should point to the first frame on the list,
and VMDFRLST should point to the last frame on the
list. FRMFPNT is the forward pointer to the next frame
on the list, and FRMBPNT is the backward pointer to
the previous frame on the list. The frame being
unchained at the time of the abend may not have been
chained properly on the user-owned frame list. Another
possibility is that the FRMOWNED flag is not on in the
frame table entry, indicating that this frame may not
belong to this VMDBK.
ALS003
Explanation: The available list replenishment function
was attempting to decrease the count of resident pages
for a VMDBK or an ASCBK, but the count was already
negative or would go negative.
User Response: Inspect the process of increasing
and decreasing the count of resident pages. Examine
the dump and determine the VMDBK or ASCBK for
20 z/VM: System Messages and Codes — CP
which this count is being decreased. A negative count
indicates an incorrect user-owned frame list. This count
increases when a frame is added to the list and
decreases when a frame is taken from the list. Inspect
the validity of the user-owned frame list.
ALS004
Explanation: The available list replenishment function
was attempting to take a frame from a user-owned
frame list, but the frame state was incorrect.
User Response: FRMPTE field in the frame table
entry contains an address of zero. This indicates the
frame is incorrect, since it is on a user-owned frame list
but does not point to a valid page table entry. Inspect
the process of chaining and unchaining frames from the
user-owned frame list. Examine the dump to determine
the VMDBK or SNTBK control block that owns the
frame.
ALT001
Explanation: The available list replenishment function
was attempting to take a frame from a user-owned
frame list, but the frames on the list were chained
improperly. It may also be that a frame on the
user-owned frame list does not have the FRMOWNED
bit on.
User Response: Inspect the process of chaining and
unchaining frames from the user-owned frame list.
Examine the dump and determine the VMDBK or
SNTBK that owns the user-owned frame list.
VMDFR1ST should point to the first frame on the list,
and VMDFRLST should point to the last frame on the
list. FRMFPNT is the forward pointer to the next frame
on the list, and FRMBPNT is the backward pointer to
the previous frame on the list. The frame being
unchained at the time of the abend may not have been
chained properly on the user-owned frame list. Another
possibility is that the FRMOWNED flag is not on in the
frame table entry, indicating that this frame may not
belong to this VMDBK.
ALT002
Explanation: The available list replenishment function
was attempting to decrease the count of resident pages
for a VMDBK or an SNTBK, but the count was already
negative.
User Response: Inspect the process of increasing
and decreasing the count of resident pages
(VMDCTPRS). Examine the dump and determine the
VMDBK or SNTBK for which this count is being
decreased. A negative count indicates an incorrect
user-owned frame list. This count increases when a
frame is added to the list and decreases when a frame
is taken from the list. Inspect the validity of the
user-owned frame list. R14 points to the address in
HCPALP where CP detected the abend.