mary george wrote:
We have got a sysdump in our shop for a LE abend.
When we tried formatting it by first setting the dataset to
IPCS,instead of getting ASID we got RBA.
When we tried few basic commands on the dump dataset using
IPCS it says,
BLS18100I,HEADER 0168 not available for BLSRPRD
BLS18104I,Symbol CVT not found
BLS18104I,Symbol ASVT not found
BLS17543I,Select service could not obtain the ASVT
BLS17541I,No address spaces with the CURRENT attribute were found
BLS17541I,No address spaces with the ERROR attribute were found
Does this mean that the dump is not usable?
The most common reason for seeing this is copying your dump to a
RECFM=FB data set with an interesting BLKSIZE. IPCS requires RECFM=FBS
in order to calculate relative record addresses, so it decided that you
might be interested in viewing it just as a data set containing a
sequence of bytes (RBA view of the thing) and did not attempt to
generate a view of the dumped z/OS system. That's the bad news.
The good news is that you probably copied the dump using a tool that, in
fact, produced a RECFM=FBS data set but didn't add the "S" for standard
length blocks. This has happened so often around our shop that I have a
little CLIST that allocates the dump as SYSUT2 for IEBGENER, specifying
DISP=MOD and RECFM=FBS. SYSUT1 is a dummy with similar attributes. The
result of "copying" the empty data set at the end of the one that you
have is to rewrite the EOF record and to update the DSCB to say that the
data set has RECFM=FBS. After doing this, use DROPDUMP and restart your
dump analysis. It should go a lot better.
Note: The above is not a panacea. I've also seen folks FTP dumps with
translation and tell transcription programs that some of the 4160-bytes
in dump records really weren't all that important! The targets of those
transcriptions were useless. Check what you have as a starting point
before bothering to try the recipe for in-place repair.
--
Bob Wright - MVS Service Aids
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