Replacing data while allowing concurrent read access

This example illustrates how to run a LOAD REPLACE job while leaving the table space in read-only (RO) status.

This example uses the SHRLEVEL REFERENCE option to tell BMC AMI Load to leave the original table space in RO status during the load and create shadow data sets. BMC AMI Load loads the new data to these shadow data sets, and then stops the table space to perform rename or fastswitch processing.

Important

For the assumptions made in this example, see Assumptions made in the syntax examples.

The benefit of this job is data availability; the cost is the additional DASD required for the shadow copies during the load process.

Related topics

LODPARMS

WRITETO

SYSREC

SYSIN 


 //LODPARMS  DD *
//SYSREC    DD DISP=SHR,DSN=USER.DATA
//SYSIN     DD *
  LOAD DATA REPLACE SHRLEVEL REFERENCE INDDN SYSREC
  INTO TABLE NGT.TABLE1
  (ID POSITION(2),
   MESSAGE POSITION(*)  CHAR(34) NULLIF(1:1) = '?',
   LANGUAGE POSITION(*)  CHAR(10) DEFAULTIF(1:1) = '?')

Important

Alternatively, you can use the +WRITETO(B) parameter instead of SHRLEVEL REFERENCE.


 

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