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Q: What is JCLLIB ORDER?
Answer:
JCLLIB ORDER specifies procedure library search order. //JOBNAME JOB ... // JCLLIB ORDER=(PROC.LIB1,PROC.LIB2). Searched for INCLUDE and EXEC procname. Takes precedence over JES2/3 proclibs. Must be before first EXEC statement.
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Q: What is BMS?
Answer:
BMS (Basic Mapping Support) handles screen I/O. Map defines screen layout. DFHMSD macro creates mapset. SEND MAP displays screen. RECEIVE MAP gets input. Symbolic map in COBOL copybook. Physical map in load library.
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Q: What is DCLGEN?
Answer:
DCLGEN generates COBOL declarations from table. DCLGEN TABLE(name) LIBRARY(dataset) STRUCTURE(host-struct-name). Creates copybook with field definitions. Essential for maintaining table-program consistency.
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Q: What causes JCL error S013-14?
Answer:
S013-14 is member not found in PDS. Check: DD name matches program expectation, member name spelled correctly, library in concatenation contains member, DISP allows access. Use LISTDS or ISPF 3.4 to verify member exists.
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Q: What causes S806 abend?
Answer:
S806 is module not found. Check: program name spelling, STEPLIB/JOBLIB correct, library exists and contains module, module link-edited properly, aliases defined. S806-04 means not in JOBLIB/STEPLIB/LINKLIST.
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Q: How to define PDS?
Answer:
//PDSOUT DD DSN=MY.PDS,DISP=(NEW,CATLG),SPACE=(CYL,(5,1,10)),DCB=(RECFM=FB,LRECL=80). Directory blocks (10) required for PDS. Or DSNTYPE=LIBRARY for PDSE. PDSE allows dynamic directory expansion, member-level sharing.
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Q: How to allocate PDSE?
Answer:
DSNTYPE=LIBRARY creates PDSE. Better than PDS: dynamic directory, member-level sharing, no compression needed. Or DATACLAS with PDSE attribute. Cannot convert back to PDS easily. Recommended for new PDSes.
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Q: How to handle -818 SQLCODE?
Answer:
-818 is timestamp mismatch between plan and DBRM. DBRM precompiled after last BIND. Solutions: REBIND plan/package, ensure DBRM library current, check promotion procedures. Timestamp in DBRM must match bound plan.