pg_xlog content

[Siddharth Shah <siddharth.shah@xxxxxxxxxxxxx>]

Hi,

   When I initialize database, pg_xlog direcory takes almost 17 MB size
   Why pg_xlog/WAL takes 17 MB of size while there is no transaction 
occurred ?

   What is the content of pg_xlog , If it's only wal file it's must be 
blank after on write of transaction on database.

regards,
Siddharth

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