what are extents?

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what are extents?

Question Posted / gopalandharinder

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what are extents?..

Answer / harish

EXTENTS ARE CONTIGIOUS MEMORY ALLOCATIONS

FOR SEQUENTIAL 16 EXTENTS ARE POSSIBLE AND FOR VSAM 123
EXTENS ARE POSSIBLE..........

pls let me know if ANY OTHER ANSWERS.

HARISH POOMGAME SHIVAPPA
NIIT TECHNOLOGY
KOLKATA

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what are extents?..

Answer / harish

extents are contigous memory locations

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what are extents?..

Answer / shailendra

extent means not a continious memory allocation.
its means the number of gap between the memory allocation
is possible when data is going to store.
if the extent is full then just run the jcl
with

space=(cyl or blk,(primary,secondary,directory,3),rlse)

it will increase the no extent by 3*16
previously it was 1*16.

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what are extents?..

Answer / prashanth yp

An extent is a contiguous area of storage in a computer file
system, reserved for a file. When a process requires
starting to write to a file, file-system management software
allocates a whole extent. When writing to the file again,
possibly after doing other write operations, the data
continues where the previous write left off. This reduces or
eliminates file fragmentation and possibly file scattering
too.(VISIT WWW.COOLINDIA.WEBS.COM FOR MORE)

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what are extents?..

Answer / mehdee

- Extents in DB2 is about either Table Space or Index Space
going further than the PRIQTY assigned, into SECQTY
assigned when we did the create, and it slows downe the
access to these tables. So when EXTENTs is more than 1,
then we need to do DB2 ALTER and increase the PRIQTY on
STOGROUP for that Table Space of Index Space.

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