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SQL*Plus: Release 10.2.0.4.0 - Production on Thu Feb 25 19:23:35 2010
Copyright (c) 1982, 2007, Oracle.  All Rights Reserved.
SQL> desc v$datafile;
SP2-0640: Not connected
SP2-0641: "DESCRIBE" requires connection to server
SQL> conn / as sysdba
Connected.
SQL> desc v$datafile;
 Name                                      Null?    Type
 ----------------------------------------- -------- ----------------------------
 FILE#                                              NUMBER
 CREATION_CHANGE#                                   NUMBER
 CREATION_TIME                                      DATE
 TS#                                                NUMBER
 RFILE#                                    &


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5.µ÷Óú¯ÊýFN_ADDONE
--------------------
SQL> SET SERVEROUTPUT ON
SQL> DECLARE CNUM NUMBER;
  2  BEGIN
  3     CNUM := USER1_ADB.FN_ADDONE(3);
  4     DBMS_OUTPUT.PUT_LINE('CNUM = ' || CNUM);
  5  END;
  6&nbs ......

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show parameter sga_max_size;
show parameter sga_target;
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alter system set sga_max_size=1600m scope=spfile;
alter system set sga_target=1600m scope=spfile;
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show parameter sga_ ......

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select segment_name, bytes
from user_segments
where segment_type = 'TABLE';
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   Select Segment_Name,Sum(bytes)/1024/1024 from User_Extents Group By Segment_Name
ÁíÒ»ÖÖ±íʵ¼ÊÊ¹Ó ......

Oracle spool Ó÷¨Ð¡½á

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select
taskindex||'|'||commonindex||'|'||tasktype||'|'||to_number(to_char(sysdate,'YYYYMMDD'))
from ssrv_sendsms_task;
spool
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set colsep' ';¡¡¡¡¡¡ //ÓòÊä³ö·Ö¸ô·û ......

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