SCANPDS - Search and Cross-Reference PDS Members and Libraries


	© 1998-2017 GSF Software LLC

Overview

SCANPDS is a multi-function utility program which scans partitioned data sets (PDS & PDSE), lists directories, cross-references the members they contain, and prints records matching specified search arguments. SCANPDS runs in the TSO/E environment (batch or on-line) on MVS/ESA, OS/390 and z/OS.

SCANPDS is a high-performance tool designed to help programmers, consultants and auditors obtain quick answers to a variety of questions, such as the following:

How many versions of our payroll programs do we have ? In what libraries can we find the source code and load-modules? When were they modified or link-edited?
What procedures contain an EXEC PGM=PAY234R5 statement? In what libraries are they stored? Which one is the most recent?
Do we have any members in ISPF PACK format in our source libraries? If we do, where are they? Is the content of any of these members corrupted?
Do we have duplicate programs in our system libraries? Are they different from one another ?
What PDS members refer to the CP3UU7J COPY member ? What JCL members execute PGM=PAYDAY34 ?
What programs in what libraries refer to field CVTUSER ?
What PARMLIB and Link-List members were modified or link-edited last week?

Highlights

SCANPDS performs the following:

Search on-line catalogs or VTOCs for data set names matching a list of user-specified selection criteria, using wildcards such as SYS%.** or %%P.LIB*.SOURCE*.** or fully-qualified names such as PROD.AR.SOURCE.
Read directories and select members based upon a list of user-specified selection criteria, such as members whose names match specified names or patterns, duplicate members, members in ISPF packed format, empty members, members updated by specified TSO users, members modified or link-edited within a specified range of dates, etc
List selected directory entries in member name sequence, along with ISPF statistics, link-edit date and load-module attributes
Optionally read members from selected libraries, search for specified character strings and display matching records. Process record sizes up to 32760 and unpack members in ISPF PACK format, as necessary.

SCANPDS supports PDS and PDSE libraries and does not normally update the "last-reference" date in the data set's VTOC entry (format-1 DSCB). SCANPDS is designed for speed and uses various techniques to reduce run time, I/O activity, and CPU consumption.

SCANPDS does not support the EDIT or SCRATCH functions to update or delete PDS members, but we also distribute two products which support them; they are PDSEDIT and SCRATCH

SCANPDS is an affordable product. A free, time-limited version is available for evaluation. Sample output reports are available for viewing.

Command Syntax

SCANPDS is a TSO/E command and standard TSO/E rules for command syntax apply. Below is a list of options and parameters which can be specified. Please refer to the sample JCL for coding examples.

SCANPDS	(defaults)
(library filter keys)	Mandatory
EXCLUDE(exclude filters)	n/a
MEMBERS(member filters)	*
EXCLUDEMEMBERS(member filters)	n/a
USERID(user-ID filters)	n/a
EXCLUDEUSERID(user-ID filters)	n/a
CATALOG(catalog name)	n/a
ENTTYPE(catalog entry types)	A
VOLUMES(volume list)	n/a
FROM(from-date)	n/a
TO(to-date)	n/a
FIND(search strings)	n/a
BOUNDS(n,m)	1,&LRECL
CAPS\|ASIS	ASIS
LANGUAGE(ASM\|COBOL\|JCL)	n/a
FIRST\|FIRST(n)\|LAST\|ALL	ALL
PREFIX\|SUFFIX\|WORD	n/a
INSYNC\|SUPERC\|PDSM18	INSYNC
MBRSEQ(NAME\|TTR)	See Comments
MOUNT\|NOMOUNT	NoMount
RECALL\|NORECALL	NoRecall
RACHECK\|NORACHECK	Racheck
FORMAT1\|FORMAT2\|FORMAT3	Format2
DUPLICATES\|NODUPLICATES\|ALL	ALL
LINKDATE\|NOLINKDATE	NoLinkdate
LoadLibraries(EVEN\|ONLY\|NONE)	EVEN
PACKED\|NOPACKED	n/a
UNPACKED\|NOUNPACKED	n/a
PACKERROR\|NOPACKERROR	n/a
EMPTY\|NOEMPTY	n/a
IOERROR\|NOIOERROR	n/a
PUTLINE\|SYSPRINT(dsname)	See comments
LastReferenceDate(Keep\|Update\|Conditional)	Keep
SortLibraryList	See comments
MAXTASKS(n)	20

'library filter keys' specifies a list of partially or fully qualified data set names which are used to search the catalogs. This parameter is required. The following formats are valid:
1. ABC.DEF.GHI represents a fully qualified name
2. ABC*.** searches all data sets whose high-level qualifier begins with the characters ABC
3. ABCD.EFGH.** searches all dsnames beginning with 'ABCD.EFGH.'
4. ABC%.**.EFGH searches all dsnames beginning with 'ABC' with any non-blank 4th character, then end with .EFGH
5. LINKLIST, LPALIST, APFLIST, PARMLIB are key-words which result in the selection of the corresponding sets of system libraries.
6. JOBLIB, STEPLIB and SYSLIB are key-words which result in the selection of the libraries currently allocated to the corresponding DD name.
SCANPDS does not prefix the TSO user ID or prefix to the data set names. If a data set name is prefixed with "&SYSUID.", then SCANPDS replaces "&SYSUID." with the current job's owner ID.
'exclude filters' specifies a list of partially or fully qualified data set names that should be ignored. The format of this list is identical to that of the 'library filter keys' .
'member filters' specifies a list of partially or fully qualified member names that should be listed and/or excluded. The following formats are valid:
1. ABCDEF represents a fully qualified name
2. ABC* lists all members whose name begins with the characters ABC
3. ABC%EF* lists all members whose names are at least 6-characters long, beginning with ABC and having the characters EF in 5th and 6th positions.
'user-ID filters' specifies a list of partially or fully qualified names that restricts the list to the members whose SPF statistics contain and/or do not contain the specified names in their user-ID field. A value of &SYSUID is interpreted as the current job's owner ID.
'catalog name' optionally specifies the name of a catalog that should be searched for library names. By default, the master catalog and all connected, on-line catalogs are searched. The CATALOG and VOLUMES options are mutually exclusive.
'catalog entry types' specifies the entry types that should be retrieved from the catalogs. Acceptable types are A (non-VSAM) and H (Generation Data Set). The default is ENTTYPE(A). Specify ENTTYPE(AH) if the PDSes or PDSEs can be generation data sets.
'volume list' specifies an optional list of volume serial numbers on which the specified data sets reside. The CATALOG and VOLUMES options are mutually exclusive.
'from-date' and 'to-date' specify optional dates in yyyyddd or yyyymmdd format used to select members based on their date of last update (ISPF statistics) or link-edit (load-modules or program objects).
'search strings' specifies a list of character strings to be searched for in the selected partitioned data sets. The records that contain the specified strings (matching records) are printed on FINDOUT DD. Arguments which contains lower-case characters or certain special characters such as spaces, apostrophes or parentheses must be enclosed in apostrophes (single quotes).
BOUNDS is an optional parameter that can be used in conjunction with FIND. BOUNDS specify the first and last position of each record in which the specified character strings should be searched. For variable-length records, BOUNDS values refer to the data portion of the record, excluding the Record Descriptor Word.
LANGUAGE specifies what type of comment lines should be ignored during the FIND operation. Current supported values are ASM, COBOL and JCL.
CAPS and ASIS are optional parameters which can be used in conjunction with FIND. CAPS indicates that the case is ignored when searching for FIND arguments. ASIS, which is the default, indicates that the character strings must appear in the records exactly as specified in the FIND argument list. Specifying CAPS increases CPU consumption.
FIRST, FIRST(n) LAST and ALL are optional parameters that can be used in conjunction with FIND. FIRST indicates that only the first (or first n) matching record(s) from every PDS member should be listed on FINDOUT. LAST only prints the last matching record. When ALL is specified or defaulted to, all of the matching records are printed.
PREFIX, SUFFIX and WORD are mutually exclusive parameters which can optionally be used in conjunction with FIND.
INSYNC, PDSFIND, PDSM18 and SUPERC are mutually exclusive key-words which control the format of the FINDOUT data set. Each key-word specifies that the format should be similar to the output produced by the corresponding utility program. INSYNC is the default.
MBRSEQ(NAME) indicates that the FIND option should process PDS members in name sequence. MBRSEQ(TTR) is the default for PDS members. MBRSEQ(NAME) is the default for PDSE members.
MOUNT indicates that SCANPDS should try to mount volumes when a selected catalog entry points to an off-line volume. The default is NOMOUNT.
RECALL indicates that migrated data sets that match the data set selection criteria should be RECALLed and processed. Specifying RECALL has a severe impact on performance. The default is NORECALL.
NORACHECK indicates that SCANPDS should not issue RACHECK to check that the user has READ authority to the selected data sets and prevent S913-38 abends The default is RACHECK on systems with RACF installed, NORACHECK otherwise.
FORMATn indicates how the data set and member names should be displayed in the output report. FORMAT1 displays the member name in pos 2 and the dsname in pos 10 of each line. FORMAT2 displays the names as dsname(member) to allow "point-and-shoot" commands to pick them up. FORMAT3 displays dsname(member) also, but right-justified. The default is FORMAT2. The FORMATn key-words can be abbreviated as Fn or FMTn.
DUPLICATES indicates that a member should only be listed if multiple members with the same name (homonyms) have been found in the selected libraries. NODUPLICATES indicates that a member should not be listed if multiple members with the same name have been found in the selected libraries. ALL is the default and indicates that members should be listed regardless of their duplicate status.
LINKDATE indicates that load modules and program objects should be analysed to retrieve the link-edit date.
LoadLibraries(ONLY) indicates that only partitioned data sets with RECFM=U are processed. LoadLibraries(NONE) indicates that partitioned data sets with RECFM=U are ignored. LoadLibraries(EVEN) is the default and indicates that libraries are selected regardless of RECFM value.
PACKED, NOPACKED, UNPACKED, NOUNPACKED, PACKERROR, NOPACKERROR, EMPTY, NOEMPTY, IOERROR, NOIOERROR are additional member selection criteria. Specifying any of these options results in performing I/O operations to read PDS members.
SYSPRINT indicates that the output report must be written to the SYSPRINT DD which must be present in the JCL. When PUTLINE is specified, the output report is written using the PUTLINE macro and can be OUTTRAP'd in a CLIST or REXX exec. The default is SYSPRINT when SCANPDS runs in batch, and PUTLINE when SCANPDS is invoked in an on-line TSO session. A data set name may optionally be specified for SYSPRINT; in that case, SCANPDS allocates the data set using the specified name with the following attributes: DISP=(NEW,CATLG,SPACE=(TRK,(100,100),RLSE). If the last 12 characters of the data set name are .DYYMMDD.THHMM, they are replaced with the current data and time before the dynamic allocation takes place.
LastReferenceDate indicates whether or not the Last Reference Date (field DS1REFD of each data set's format-1 DSCB) should be kept unchanged (KEEP) or set to the system date (UPDATE). When LastReferenceDate(Conditional) is specified, the Last Reference Date is only updated when the FIND command is successful.
The SortLibraryList option indicates that the library list should be printed in dsname and volume sequence. This option is only useful when several library filter keys are specified in the command. By default, the list is produced in the sequence in which data set names are retrieved from the catalogs.
MAXTASKS is a performance-oriented parameter which indicates the maximum number of sub-tasks will be allowed to execute concurrently to read PDS directories and members. The default value is 15+5*ncpu, where ncpu is the number of online CPUs. On a uni-processor machine, the MAXTASK default value is 20; on a 3-way multi-processor, the default value is 30 (15+5*3).

Migrated Data Sets

SCANPDS detects data sets migrated by HSM, FDR/ABR and CA-DISK and ignores them unless the RECALL option is specified. Specifying RECALL(DISK), RECALL(TAPE) or RECALL(BOTH) recalls data sets migrated to disk, tape, or both, respectively. Specifying RECALL is equivalent to RECALL(BOTH). As expected, specifying RECALL has a severe impact on performance, particularly when data sets have to be recalled from tape.

Members in ISPF PACKED Format

SCANPDS fully supports members in ISPF PACKED format. When the PACKED, UNPACKED or PACKERROR options are specified, SCANPDS reads members to identify those in PACKED format, members which are not in PACKED format, or members in PACKED format for which the unpacking routine detects an error. Specifying the PACKED, UNPACKED or PACKERROR options increases I/O activity; specifying PACKERROR also increases CPU consumption.

The FIND option automatically unpacks packed members before searching for specified arguments and displays unpacked records on the FINDOUT data set.

ALIAS Catalog Entries

SCANPDS does not currently support ALIAS entries in the catalog.

ALIAS Directory Entries

SCANPDS currently ignores the ALIAS bit in directory entries. As a result, those entries are supported like non-ALIAS members.

ALIAS names can be 1 to 8 characters; longer ALIAS names that can exist in a PDSE are not supported.

FIND Option

The FIND option searches PDS and PDSE members for specified arguments; matching records are printed to the FINDOUT data set. Specifying the FIND option increases I/O activity and CPU consumption.

FIND works in association with a set of related options, namely BOUNDS, WORD, PREFIX, SUFFIX, CAPS, ASIS, FIRST, LAST, ALL and LANGUAGE. Except for LANGUAGE, FIND and associated options work like the corresponding options of the ISPF and SDSF FIND commands.

The FIRST(n) or LAST(n) options (which do not exist in the FIND commands of ISPF or SDSF) instruct SCANPDS to print the first (or last) n matching records for each member. FIRST and LAST are equivalent to FIRST(1) and LAST(1), respectively.

The LANGUAGE(ASM), LANGUAGE(COBOL) or LANGUAGE(JCL) options indicate that comment lines should not be searched for matching arguments. Assembler comments are identified by the presence of an asterisk in pos 1 or 2 of the record. COBOL comments are identified by the presence of an asterisk or a slash in pos 7 of the record. JCL comments are identified by the presence of an asterisk in pos 3 of the record.

FIND operates on load-libraries in PDS or PDSE format. However, results from a load-library search may be confusing, as the matching arguments may not always appear in the FINDOUT output.

FINDOUT Data Set

The FINDOUT data set is used in conjunction with the FIND option of SCANPDS. When records matching the FIND arguments are found, they are printed to the FINDOUT DD. The default DCB attributes for FINDOUT are RECFM=VBA,LRECL=260. If matching records can be longer than 255 bytes, then an appropriate value equal to 5 plus the length of the longest matching record must be specified on the FINDOUT DD, e.g. LRECL=1005 will accomodate 1000-byte records. The RECFM for FINDOUT is always set to VBA and cannot be changed.

By default, the output written to FINDOUT is displayed in the COMPACT format, which includes the data-set and member names, and ISPF statistics (when present). For example, here is some of the output produced by the following TSO/E command: SCANPDS IBMUSER.JCL FIND('PGM=IEB' 'PGM=IEH'):

1IBMUSER.JCL(ASCII)  01.04 1997-06-17 1997-06-27 15:00:00     23     9    15 IBMUSER
 //LABEL EXEC PGM=IEBGENER                                               00060001
 //PRINT EXEC PGM=IEBGENER                                               00130001
 //PRINT2 EXEC PGM=IEBGENER                                              00190004
0IBMUSER.JCL(FREEBEES)  01.06 1992-05-21 1997-06-03 09:56:32     20    24     0 IBMUSER
 //COPY    EXEC PGM=IEBCOPY
0IBMUSER.JCL(IEHMOVE2)  01.03 1994-04-04 1999-12-28 12:27:48     17    16    10 IBMUSER
 //RELOAD EXEC PGM=IEHMOVE,PARM='POWER=4'                                00090000

When the INSYNC option is specified, the format of the output written to FINDOUT is similar to that produced by the INSYNC utility; for example, here is some of the output produced by this command: SCANPDS GSFSOFT.ESA43.MACLIB MEM(IHA*) XMEM(IHAASCB) FIND(ASCB) WORD INSYNC

  IHAASEO  ----------- GSFSOFT.ESA43.MACLIB ------------------------------------
ASEOSTKN DS    XL8                     64-bit stoken of new ASCB
ASEOASCB DS    A                       ASCB of new address space
*          3 ASEOSTKN BIT(64),         /* 64-bit stoken of new ASCB  */
*          3 ASEOASCB PTR(31),         /* ASCB of new address space  */
  IHAASSB  ----------- GSFSOFT.ESA43.MACLIB ------------------------------------
.*  $L9=ASCB     HBB4410  880404   PD16BN:  ASCB VSCR SUPPORT
ASSBASCB DS    A                   ADDRESS OF ASCB.                @L9C
*      2 ASSBASCB PTR(31),          /* ADDRESS OF ASCB.          @L9C*/
  IHAASTE  ----------- GSFSOFT.ESA43.MACLIB ------------------------------------
*                                  ASCB ADDRESS                    @L2A
*                                     ASCB ADDRESS.              @L2C*/
  IHAASVT  ----------- GSFSOFT.ESA43.MACLIB ------------------------------------
*                                  CONTAINS ADDRESS OF ASCB. IF NOT
*                                    CONTAINS ADDRESS OF ASCB. IF NOT
  IHAASXB  ----------- GSFSOFT.ESA43.MACLIB ------------------------------------
*/*     control.  The ASXB is swappable, and the ASCB is not.        */

When the SUPERC option is specified along with FIND, the format of the output written to FINDOUT is similar to that produced by the SEARCHFOR command of the IBM SUPERC utility; for example, here is some of the output produced by this command: SCANPDS GSFSOFT.ESA43.MACLIB MEM(IHA*) XMEM(IHAASCB) FIND(ASCB) WORD SUPERC

GSF Utilities - SCANPDS R401I                            Monday 27 Dec 2004 (2004.362) 16.36
 LINE-#  SOURCE SECTION                    SRCH DSN: GSFSOFT.ESA43.MACLIB

 IHAASEO                     --------- STRING(S) FOUND -------------------

     38  ASEOSTKN DS    XL8                     64-bit stoken of new ASCB
     39  ASEOASCB DS    A                       ASCB of new address space
     53  *          3 ASEOSTKN BIT(64),         /* 64-bit stoken of new ASCB  */
     54  *          3 ASEOASCB PTR(31),         /* ASCB of new address space  */

 IHAASSB                     --------- STRING(S) FOUND -------------------

     98  .*  $L9=ASCB     HBB4410  880404   PD16BN:  ASCB VSCR SUPPORT
    291  ASSBASCB DS    A                   ADDRESS OF ASCB.                @L9C
    582  *      2 ASSBASCB PTR(31),          /* ADDRESS OF ASCB.          @L9C*/

 IHAASTE                     --------- STRING(S) FOUND -------------------

    159  *                                  ASCB ADDRESS                    @L2A
    262  *                                     ASCB ADDRESS.              @L2C*/

 IHAASVT                     --------- STRING(S) FOUND -------------------

    120  *                                  CONTAINS ADDRESS OF ASCB. IF NOT
    199  *                                    CONTAINS ADDRESS OF ASCB. IF NOT

 IHAASXB                     --------- STRING(S) FOUND -------------------

     50  */*     control.  The ASXB is swappable, and the ASCB is not.        */

When the PDSM18 option is specified along with FIND, the format of the output written to FINDOUT is similar to that produced by the PDSM18 utility (PDSMAN), as shown below:

GSF Utilities - SCANPDS R401I                            Monday 27 Dec 2004 (2004.362) 16.36
** PDSM18 **   SYS1                                       GSFSOFT.ESA43.MACLIB
NO TARGET STRINGS FOUND   IN MEMBER IHAABDPL
NO TARGET STRINGS FOUND   IN MEMBER IHAABEPL
NO TARGET STRINGS FOUND   IN MEMBER IHAACEE
NO TARGET STRINGS FOUND   IN MEMBER IHAAE
NO TARGET STRINGS FOUND   IN MEMBER IHAAQAT
NO TARGET STRINGS FOUND   IN MEMBER IHAARL

 FLG LINENO --- HIT(S)        FOUND FOR MEMBER IHAASEO       ---

 HIT    38  ASEOSTKN DS    XL8                     64-bit stoken of new ASCB
 HIT    39  ASEOASCB DS    A                       ASCB of new address space
 HIT    53  *          3 ASEOSTKN BIT(64),         /* 64-bit stoken of new ASCB  */
 HIT    54  *          3 ASEOASCB PTR(31),         /* ASCB of new address space  */

 FLG LINENO --- HIT(S)        FOUND FOR MEMBER IHAASSB       ---

 HIT    98  .*  $L9=ASCB     HBB4410  880404   PD16BN:  ASCB VSCR SUPPORT
 HIT   291  ASSBASCB DS    A                   ADDRESS OF ASCB.                @L9C
 HIT   582  *      2 ASSBASCB PTR(31),          /* ADDRESS OF ASCB.          @L9C*/

 FLG LINENO --- HIT(S)        FOUND FOR MEMBER IHAASTE       ---

 HIT   159  *                                  ASCB ADDRESS                    @L2A
 HIT   262  *                                     ASCB ADDRESS.              @L2C*/

 FLG LINENO --- HIT(S)        FOUND FOR MEMBER IHAASVT       ---

 HIT   120  *                                  CONTAINS ADDRESS OF ASCB. IF NOT
 HIT   199  *                                    CONTAINS ADDRESS OF ASCB. IF NOT

 FLG LINENO --- HIT(S)        FOUND FOR MEMBER IHAASXB       ---

 HIT    50  */*     control.  The ASXB is swappable, and the ASCB is not.        */

Sample JCL

SCANPDS runs as a TSO command on-line or in batch. The following sample job stream shows how to set up a TMP job step to execute several SCANPDS commands.

 //SCANPDS3 JOB (acct#),'PDS XREF',CLASS=A,MSGCLASS=X,COND=(0,NE)
 //*
 //*		Cross-Reference MVS Libraries
 //*
 //PDSSCAN EXEC PGM=IKJEFT01
 //STEPLIB  DD DSN=<SCANPDS Load Library>,DISP=SHR
 //SYSTSPRT DD SYSOUT=*
 //SYSPRINT DD SYSOUT=*
 //FINDOUT  DD SYSOUT=*
 //SYSTSIN  DD *

 /* List the directory for SYS1.MACLIB */

 SCANPDS SYS1.MACLIB

 /* List duplicate members in PROD.LOADLIB and STAGE.LOADLIB

 SCANPDS (PROD.LOADLIB STAGE.LOADLIB) DUPLICATES

 /* List duplicate IEF anf IGG load-modules in system libraries,
 /* along with the corresponding link-edit dates

 SCANPDS (LINKLIST LPALIST) MEMBERS(IEF* IGG*) DUPL LINKDATE

 /* Scan JCL libraries to locate packed members
 /* Recall migrated libraries.

 SCANPDS (GSFSOFT.**.*JCL*.** PRJ144.JCL*.**) PACKED RECALL

 /* Search all PROD.** and STAGE.** source libraries in the catalog
 /* for members modified by GSFSOFT and STAFF*. Scan those members for
 /* records containing the 'CP3UU7J' or 'CP4RS4D' character strings.
 /* Ignore COBOL Comment lines.

 SCANPDS (PROD.** STAGE.**) +
	USERID(GSFSOFT STAFF*) +
	FIND(CP3UU7J CP4RS4D) +
	LANG(COBOL)

 /* Cross-reference duplicate members whose names match IEC* and *JEK*
 /* display load-module link-edit dates


 SCANPDS (**.LOAD* **.LINK* **.PARMLIB) +
	EXCLUDE(SYS%.** DLIB.**) +
	MEMBERS(IEC* *JEK*) +
	DUPLICATES +
	LINKDATE

 /* Search system and DLIB source libraries for IHA* and IGG*
 /* members which contain the 'PSA' or 'ASCB' character strings
 /* in pos 8 through 44 of each record.
 /* Ignore assembler comment lines with '*' in pos 1 or 2.
 /* Print only the first two matching records of each member.

 SCANPDS (SYS1.AOS* SYS1.MACLIB SYS1.MODGEN) +
	EXCLUDE(SYS1.AOS34 SYS1.AOS5* ) +
	LOADLIB(NO) +
	MEMB(IHA* IGG*) +
	FIND('PSA' 'ASCB') +
	BOUNDS(8,44) +
	LANG(ASM) +
	FIRST(2)

 /* List PARMLIB and link-list members updated during
 /* the first seven days of February 2004.

 SCANPDS (parmlib linklist) from(20040201) to(20040207)

 /* List all members in all SYS%.** uncatalogued data sets on specified on-line DASD volumes

 SCANPDS SYS%.** VOL(Z%RES% Z%USS%)

 /* List all empty members found in all catalogued data sets whose dsnames end with CTLCARDS 

 SCANPDS **.CTLCARDS EMPTY
/*

Sample Output Reports

Sample output listings produced by SCANPDS are available here and here.

Search key-words: ibm mvs os/390 os390 z/os zos tso ispf clist rexx exec list directory list directories liste listing global search members searching pds mass scan text plus scanning test locate locating fast cross-reference quick crossreference rapid xref crossref cross-ref idrdata create created modify change modified changed pds pdse pds/e dataset datasets mbrxref2 generic wildcard wildcards wild-card wild-cards partially-qualified fully-qualified jcl job stream listds listpds pdslist listdir iehlist srchfor srchdsn 5798-CXQ FDP replacement masse system-wide sequential mainframe main-frame superc isrsupc concatenation BUSCAR TODAS LIBRERIAS dynamically allocate gives produces i/o error