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What is RBA (Relative Byte Address)?

 
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karthi_ind

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Joined: 24 Feb 2004
Posts: 131
Location: Chennai

PostPosted: Mon Jul 05, 2004 3:13 pm    Post subject: What is RBA (Relative Byte Address)?
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hi to all

1) What is RBA (Relative Byte Address)?

2) What is spooling?

3) What is the diff. between jes2 and jes3 ?

4) what is addressing ? what is the use of Amode and rmode?
what is 24 bit and 31 bit addressing?

anbudan

karthi G.
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meetsrk

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Joined: 13 Jun 2004
Posts: 85

PostPosted: Mon Jul 05, 2004 11:32 pm    Post subject:
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hi karthik_ind,

1 RBA is internal byte address of each record for a vsam file with respect to the first record. i.e

RBA is mainly used in fixed format records.

suppose if u record length = 80 then
RBA of rec 1 = 0
RBA of rec 2 = 80
RBA of rec 3 = 160

hence even using RBA we can access records randomly.

3. jes => Job entry subsytem

either jes2 and jes3 can exist in a system.

jes2 is used for uniprocessor system.
jes3 is used for multiprocessor system.
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