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time£º2010-05-13
1)If memory increases and you're 64-bit,  e.g  8G to 16G,  Oracle SGA and related parameters need adjust; So are some the Unix kernel parameters.
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SQL> desc test;
Name Type Nullable Default Comments
------- ------------ -------- ------- --------
COUNTRY VARCHAR2(20) Y
CITY VARCHAR2(20) Y
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COUNTRY CITY
-------------------- --------------------
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