Example 4 — Unloading while allowing read write access to the table space
This example unloads a sample of rows from example tables while giving users read/write access to the table space.
By specifying SHRLEVEL CHANGE CONSISTENT YES, UNLOAD PLUS briefly restricts access to the object only while externalizing the pages of the table space. When operating on partitioned objects (as in this example), UNLOAD PLUS restricts access of only the participating objects.
Message 50041I indicates the status of zIIP processing. For this example, an XBM subsystem ID was specified for SHRLEVEL CHANGE processing. UNLOAD PLUS uses the same XBM subsystem ID for zIIP processing.
The following table describes key command options that this job uses:
Command options used in JCL | Description |
---|---|
LIMIT 10 | Unloads up to 10 records |
INTERVAL 2 | Unloads every other row |
SHRLEVEL CHANGE CONSISTENT YES | Invokes XBM or SUF to allow concurrent read and write access during the unload |
XBMID XBMB | Identifies the XBM subsystem for using XBM or SUF with UNLOAD PLUS |
SELECT | Names columns to unload |
FROM | Names the table to unload |
WHERE | Qualifies the data to unload |
The following figure shows the JCL for example 4:
//UNLOAD04 EXEC PGM=ADUUMAIN,REGION=0M,
// PARM=(DEHJ,'ADUXM04','NEW ',,'MSGLEVEL(1)')
//*********************************************************************
//STEPLIB DD DISP=SHR,DSN=<product.libraries>
// DD DISP=SHR,DSN=DB2.DSNEXIT
// DD DISP=SHR,DSN=DB2.DSNLOAD
//SYSIN DD *
*
UNLOAD LIMIT 10 INTERVAL 2
SHRLEVEL CHANGE CONSISTENT YES XBMID XBMB
*
SELECT EMPL_LNAME, HIRE_DATE, DEPT_NO, SALARY_CODE
FROM BMC.EMPLS
WHERE SALARY_CODE ='H'
*
SELECT EMPL_LNAME,EMPL_HIRE_DATE,EMPL_DEPT_NO,EMPL_SALARY_CODE
FROM BMC.RET_EMPLS
WHERE EMPL_SALARY_CODE ='S'
*
//SYSREC01 DD DSN=ADU.EXAMPLE4.SYSREC01,
// DISP=(,CATLG),SPACE=(TRK,(1,1)),UNIT=SYSDA
//SYSREC02 DD DSN=ADU.EXAMPLE4.SYSREC02,
// DISP=(,CATLG),SPACE=(TRK,(1,1)),UNIT=SYSDA
//UTPRINT DD SYSOUT=*
//SYSPRINT DD SYSOUT=*
SYSPRINT for example 4
The following figure shows the SYSPRINT for example 4:
(C) COPYRIGHT 1991 - 2013 BMC SOFTWARE, INC.
BMC50001I UTILITY EXECUTION STARTING 10/28/2013 13:02:42 ...
BMC50002I UTILITY ID = 'ADUXM04'. DB2 SUBSYSTEM ID = 'DEHJ'. OPTION MODULE = 'ADU$OPTS'.
BMC50471I z/OS 2.1.0,PID=HBB7790,DFSMS FOR Z/OS=2.1.0,DB2=11.1.0
BMC50471I REGION=0M,BELOW 16M=8844K,ABOVE 16M=1412360K,IEFUSI=NO,CPUS=3
BMC50471I MEMLIMIT=17592186040320M,AVAILABLE=17592186040311M,MEMLIMIT SET BY:REGION=0
BMC50471I UNLOAD PLUS FOR DB2--V11.01.00
BMC50471I NO MAINTENANCE TO REPORT
BMC50471I DB2 UTILITIES COMMON CODE--V11.01.00
BMC50471I NO MAINTENANCE TO REPORT
BMC50471I SOLUTION COMMON CODE--V11.01.00
BMC50471I MAINT: BPJ0661 BPJ0667 BPJ0671 BPJ0674 BPJ0675 BPJ0676 BPJ0682 BPJ0686 BPJ0689 BPJ0697
BMC50471I BMCSORT ENGINE--V02.04.01
BMC50471I MAINT: BPJ0691
BMC50471I BMC STATS API--V11.01.00
BMC50471I MAINT: BPU5409 BPU5534 BPU5674
BMC50471I EXTENDED BUFFER MANAGER--V06.01.00
BMC50471I MAINT: BPE0401 BPE0403 BPE0405 BPE0407 BPE0410 BPE0412 BPE0416
BMC50471I ANALYZE=(DB2STATS,NOLIMIT) FORCE_RPT=NO SMAX=16
BMC50471I CENTURY=(1950,2049) FORCE=NONE SMCORE=(0K,0K)
BMC50471I CHANGE_CONSISTENT=NO HISTORY=YES SORTNUM=32
BMC50471I CHANGE_QUIESCE=NO IBUFFS=25 SQLDELAY=3
BMC50471I CMAX=16 INLINE=NO SQLRETRY=100
BMC50471I CMRATIO=50 LOADDECP=NO TAPEDISP=DELETE
BMC50471I CONSTRULES=BMC LOCKROW=YES TASKMAX=200%
BMC50471I CURRENTDEGREE=NONE MAXP=5 UBUFFS=25
BMC50471I DELFILES=YES MSGLEVEL=1 UNLDMAX=200%
BMC50471I DRNDELAY=1 NULLCHAR=X'6F' UNLOADDN_ACTIVE=(YES,NO)
BMC50471I DRNRETRY=255 NULLTYPE=T1 UNLOADDN=(SYSREC,SYSRED)
BMC50471I DRNWAIT=NONE OPNDB2ID=YES USELRECL=NO
BMC50471I DSPLOCKS=DRNFAIL PLAN=ADUQA UXSTATE=SUP
BMC50471I EXCLDUMP=(X37,X22,X06) RECFM=AUTO WORKUNIT=SYSALLDA
BMC50471I FILEREFDN=SYSREF ROWSETSZ=100 ZIIP=ENABLED
BMC50471I FILL=NO SDUMP=YES ZONEDDECOVP=(C,D)
BMC50471I FORCE_AT=(START,3) SHRLEVEL=REFERENCE
BMC50471I TAPES=NONE
BMC50470I OUTPUT = SYSREC SYSRED SYSREF
BMC50470I UNIT = SYSALLDA SYSALLDA SYSALLDA
BMC50470I VOLCNT = 25 25 25
BMC50470I GDGLIMIT = 5 5 5
BMC50470I GDGEMPTY = NO NO NO
BMC50470I GDGSCRAT = NO NO NO
BMC50470I STORCLAS = NONE NONE NONE
BMC50470I DATACLAS = NONE NONE NONE
BMC50470I MGMTCLAS = NONE NONE NONE
BMC50470I UNITCNT = 0 0 0
BMC50470I SPACE = CYL CYL CYL
BMC50470I PCTPRIM = AUTO AUTO AUTO
BMC50470I MAXPRIM = 0 0 0
BMC50470I MAXSECD = 0 0 0
BMC50470I FILESZPCT 100 100 100
BMC50470I NBRSECD = AUTO AUTO AUTO
BMC50470I DISKRETN = NONE NONE NONE
BMC50470I DISKEXPD = NONE NONE NONE
BMC50470I RETPD = NONE NONE NONE
BMC50470I EXPDT = 99000 99000 99000
BMC50470I TRTCH = NONE NONE NONE
BMC50470I DSNTYPE = NONE NONE PDS
BMC50483I SYSREC VOLUMES=NONE
BMC50483I SYSRED VOLUMES=NONE
BMC50483I SYSREF VOLUMES=NONE
BMC50483I SYSREC DSNAME=&USERID.&TYPE.S&SELNUM
BMC50483I SYSRED DSNAME=&USERID.&TYPE.S&SELNUM
BMC50483I SYSREF DSNAME=&USERID.BMC
BMC50471I DB2 DSNHDECP MODULE SETTINGS:
BMC50471I VERSION = 1110
BMC50471I SUBSYSTEM DEFAULT = DEHJ
BMC50471I CHARACTER SET = ALPHANUM
BMC50471I DATE FORMAT = USA
BMC50471I TIME FORMAT = USA
BMC50471I LOCAL DATE LENGTH = 0
BMC50471I LOCAL TIME LENGTH = 0
BMC50471I DECIMAL POINT = PERIOD
BMC50471I DECIMAL ARITHMETIC = 15
BMC50471I DELIMITER = DEFAULT
BMC50471I SQL DELIMITER = DEFAULT
BMC50471I ENCODING SCHEME = EBCDIC
BMC50471I APPL. ENCODING SCHEME = EBCDIC
BMC50471I MIXED = NO
BMC50471I EBCDIC CCSID = (37,65534,65534)
BMC50471I ASCII CCSID = (819,65534,65534)
BMC50471I UNICODE CCSID = (367,1208,1200)
BMC50471I IMPLICIT TIME ZONE = CURRENT (-05:00)
BMC50028I DB2 MODE = NFM
BMC50471I BMC_BMCUTIL ='BMCUTIL.CMN_BMCUTIL'
BMC50471I BMC_BMCSYNC ='BMCUTIL.CMN_BMCSYNC'
BMC50471I BMC_BMCHIST ='BMCUTIL.CMN_BMCHIST'
BMC50471I BMC_BMCXCOPY ='BMCUTIL.CMN_BMCXCOPY'
BMC50102I *
BMC50102I UNLOAD LIMIT 10 INTERVAL 2
BMC50102I SHRLEVEL CHANGE CONSISTENT YES XBMID XBMB
BMC50102I *
BMC50102I SELECT EMPL_LNAME, HIRE_DATE, DEPT_NO, SALARY_CODE
BMC50102I FROM BMC.EMPLS
BMC50102I WHERE SALARY_CODE ='H'
BMC50102I *
BMC50102I SELECT EMPL_LNAME,EMPL_HIRE_DATE,EMPL_DEPT_NO,EMPL_SALARY_CODE
BMC50102I FROM BMC.RET_EMPLS
BMC50102I WHERE EMPL_SALARY_CODE ='S'
BMC50102I *
BMC51654I DIRECT YES IN EFFECT
BMC51687I ESTIMATED ROWS FOR TABLE SPACE BMCEXDB.BMCEXATS PART 1 IS 8 FROM DB2STATS
BMC51687I ESTIMATED ROWS FOR TABLE SPACE BMCEXDB.BMCEXATS PART 2 IS 5 FROM DB2STATS
BMC51687I ESTIMATED ROWS FOR TABLE SPACE BMCEXDB.BMCEXATS PART 3 IS 5 FROM DB2STATS
BMC51687I ESTIMATED ROWS FOR TABLE SPACE BMCEXDB.BMCEXATS PART 4 IS 2 FROM DB2STATS
BMC51688I ESTIMATED ROWS FOR TABLE BMC.EMPLS IS 20 FROM DB2STATS
BMC51687I ESTIMATED ROWS FOR TABLE SPACE BMCEXDB.BMCEXBTS PART 0 IS 6240 FROM HURBA
BMC51688I ESTIMATED ROWS FOR TABLE BMC.RET_EMPLS IS 6240 FROM TABLESPACE
BMC51688I ESTIMATED ROWS FOR TABLE BMC.HRLY_EMPLS IS 6240 FROM TABLESPACE
BMC51688I ESTIMATED ROWS FOR TABLE BMC.SAL_EMPLS IS 6240 FROM TABLESPACE
BMC51689I ESTIMATED ROWS FOR SELECT 1 IS 40
BMC51689I ESTIMATED ROWS FOR SELECT 2 IS 10
BMC50004I UTILINIT PHASE COMPLETE. ELAPSED TIME = 00:00:00
BMC51639I FOR DDNAME 'SYSREC01' DSN=ADU.EXAMPLE4.SYSREC01,DCB=(RECFM=VB,BLKSIZE=27993,LRECL=37)
BMC51639I FOR DDNAME 'SYSREC02' DSN=ADU.EXAMPLE4.SYSREC02,DCB=(RECFM=VB,BLKSIZE=27993,LRECL=37)
BMC50894I PAGE EXTERNALIZATION PROCESS STARTING AT 10/28/2013 13:02:42
BMC50650I ESTABLISHING A POINT OF CONSISTENCY FOR:
BMC50651I SPACE BMCEXDB.BMCEXATS PART(0) PSID(0002)
BMC50651I SPACE BMCEXDB.BMCEXBTS PART(0) PSID(0007)
BMC50895I PAGE EXTERNALIZATION PROCESS COMPLETE. ELAPSED TIME = 00:00:00
BMC50041I 0: ZIIP ENABLED (0) USING XBM SUBSYSTEM XBMB
BMC50474I BELOW 16M = 8496K, ABOVE 16M = 1403296K, CPUS = 3
BMC51701I MAX TASKS = 4, MAX PARTITIONS PER TASK = 1, SORTWKS PER TASK = 0, MAX OPEN PARTITIONS PER TASK = 1
BMC50477I 4: PARTITION = 4, ROWS/KEYS = 2, I/O WAITS = 2 ,DDNAME = SYS00006
BMC50478I 4: RDB LOCK WAITS = 0
BMC50477I 3: PARTITION = 3, ROWS/KEYS = 5, I/O WAITS = 2 ,DDNAME = SYS00005
BMC50478I 3: RDB LOCK WAITS = 0
BMC50477I 2: PARTITION = 2, ROWS/KEYS = 5, I/O WAITS = 2 ,DDNAME = SYS00004
BMC50478I 2: RDB LOCK WAITS = 0
BMC50477I 1: PARTITION = 1, ROWS/KEYS = 8, I/O WAITS = 2 ,DDNAME = SYS00003
BMC50478I 1: RDB LOCK WAITS = 0
BMC51701I MAX TASKS = 1, MAX PARTITIONS PER TASK = 1, SORTWKS PER TASK = 0, MAX OPEN PARTITIONS PER TASK = 1
BMC50477I 5: PARTITION = 0, ROWS/KEYS = 20, I/O WAITS = 2 ,DDNAME = SYS00007
BMC50478I 5: RDB LOCK WAITS = 0
BMC50476I DDNAME = SYSREC01, I/OS = 3, I/O WAITS = 3, RDB LOCK WAITS = 0
BMC50476I DDNAME = SYSREC02, I/OS = 1, I/O WAITS = 1, RDB LOCK WAITS = 0
BMC51671I UNLOAD STATISTICS: 2 ROWS PROCESSED FROM PARTITION 1
BMC51686I UNLOADING OF DATASET 'DEHJCAT.DSNDBD.BMCEXDB.BMCEXATS.I0001.A001' READ 3 PAGES
BMC51671I UNLOAD STATISTICS: 1 ROWS PROCESSED FROM PARTITION 2
BMC51686I UNLOADING OF DATASET 'DEHJCAT.DSNDBD.BMCEXDB.BMCEXATS.I0001.A002' READ 3 PAGES
BMC51671I UNLOAD STATISTICS: 2 ROWS PROCESSED FROM PARTITION 3
BMC51686I UNLOADING OF DATASET 'DEHJCAT.DSNDBD.BMCEXDB.BMCEXATS.I0001.A003' READ 3 PAGES
BMC51671I UNLOAD STATISTICS: 0 ROWS PROCESSED FROM PARTITION 4
BMC51686I UNLOADING OF DATASET 'DEHJCAT.DSNDBD.BMCEXDB.BMCEXATS.I0001.A004' READ 3 PAGES
BMC51672I UNLOAD STATISTICS: 5 ROWS PROCESSED FROM SPACE 'BMCEXDB.BMCEXATS', 15 NOT SELECTED, 0 DISCARDED
BMC51686I UNLOADING OF DATASET 'DEHJCAT.DSNDBD.BMCEXDB.BMCEXBTS.I0001.A001' READ 3 PAGES
BMC51670I UNLOAD STATISTICS: 4 ROWS PROCESSED FROM TABLE 'BMC.RET_EMPLS', 16 NOT SELECTED, 0 DISCARDED
BMC51672I UNLOAD STATISTICS: 4 ROWS PROCESSED FROM SPACE 'BMCEXDB.BMCEXBTS', 16 NOT SELECTED, 0 DISCARDED
BMC51674I UNLOAD STATISTICS: 5 RECORDS WRITTEN TO DDNAME 'SYSREC01'
BMC51674I UNLOAD STATISTICS: 4 RECORDS WRITTEN TO DDNAME 'SYSREC02'
BMC51675I UNLOAD STATISTICS: 0 RECORDS DISCARDED DUE TO ERRORS
BMC50041I 0: ZIIP NOT ENABLED (0) USING XBM SUBSYSTEM XBMB
BMC50277I XBM STATISTICS: DSN='DEHJCAT.DSNDBD.BMCEXDB.BMCEXATS.I0001.A001 ', READS 4, HITS 0, WRITES 0, CACHE 0
BMC50277I XBM STATISTICS: DSN='DEHJCAT.DSNDBD.BMCEXDB.BMCEXATS.I0001.A002 ', READS 4, HITS 0, WRITES 0, CACHE 0
BMC50277I XBM STATISTICS: DSN='DEHJCAT.DSNDBD.BMCEXDB.BMCEXATS.I0001.A003 ', READS 4, HITS 0, WRITES 0, CACHE 0
BMC50277I XBM STATISTICS: DSN='DEHJCAT.DSNDBD.BMCEXDB.BMCEXATS.I0001.A004 ', READS 4, HITS 0, WRITES 0, CACHE 0
BMC50277I XBM STATISTICS: DSN='DEHJCAT.DSNDBD.BMCEXDB.BMCEXBTS.I0001.A001 ', READS 99, HITS 0, WRITES 0, CACHE 0
BMC50004I UNLOAD PHASE COMPLETE. ELAPSED TIME = 00:00:00
BMC50006I UTILITY EXECUTION COMPLETE, RETURN CODE = 0
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