Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

ÐÞ¸ÄOracle µÄ×î´óÁ¬½ÓÊý

ʹÓÃsys£¬ÒÔsysdbaȨÏ޵ǼOracle:
(ÆÕͨȨÏÞ£¬D:\sqlplus tss/tss123456@buaa)
D:\sqlplus sys/penghj@buaa as sysdba
SQL> show parameter processes;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
aq_tm_processes integer 1
db_writer_processes integer 1
job_queue_processes integer 10
log_archive_max_processes integer 1
processes integer 150
SQL> alter system set processes=300 scope = spfile;
ϵͳÒѸü¸Ä¡£
SQL> show parameter processes;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
aq_tm_processes integer 1
db_writer_processes integer 1
job_queue_processes integer 10
log_archive_max_processes integer 1
processes integer 150
SQL> create pfile from spfile;
ÎļþÒÑ´´½¨¡£
ÖØÆôÊý¾Ý¿â£¬OK£¡


Ïà¹ØÎĵµ£º

Oracle PL\SQL²Ù×÷£¨Ò»£©

1.OracleÔõÑù´æ´¢Îı¾
CHARºÍVARCHAR2µÄÇø±ð
•CHAR¶¨³¤×Ö·û´®£¬VARCHAR2±ä³¤×Ö·û´®¡£
•CHAR(n) ¶¨³¤×Ö·û´®£¬n×Ö½Ú£¬nµÄÈ¡Öµ·¶Î§£º1~2000×Ö½Ú¡£
•VARCHAR2(n) ¿É±ä³¤µÄ×Ö·û´®£¬¶¨ÒåʱӦָÃ÷×î´ó³¤¶È£¬È¡Öµ·¶Î§£º1~ 4000×Ö½Ú¡£
2. OracleÔõÑù´æ´¢ÊýÖµ
ÊýÖµÀàÐÍ˵Ã÷£º NUMBER£¨m , n£©
Êý×Ö ......

oracle+jspÖÐblobÀàÐÍ´æ´¢´óÎı¾ÎÊÌâ½â¾ö·½·¨


 
 
 
 
 
oracle+jspÖÐblobÀàÐÍ´æ´¢´óÎı¾ÎÊÌâ½â¾ö·½·¨
oracle ´æ´¢´óÎı¾Ò»Ö±ÊÇÒ»¸ö¼¬ÊÖµÄÎÊÌâ¡£
Ò»¡¢´æÊý¾Ý¿â£º
<%@page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<%
//¶¨Òå±äÁ¿
java.sql.Connection conn; //Êý¾ ......

oracle£ºCLUSTER

±í´Ø£¨table   cluster)ÊÇÒ»¸öÊý¾Ý¿â¶ÔÏó£¬Ëü¿ÉÒÔ½«ÄÇЩ¾­³£ÔÚÏàͬÊý¾Ý¿éÖÐÒ»ÆðʹÓõıí½øÐÐÎïÀí·Ö×é¡£µ±Äã´¦ÀíÄÇЩ¾­³£Á¬½ÓÔÚÒ»Æð½øÐвéѯµÄ±íʱ£¬±í´ØÊÇÌرðÓÐЧµÄ¡£Ò»¸ö±í´Ø´æ´¢´Ø¼ü£¨ÓÃÓÚ½«±íÁ¬½Óµ½Ò»ÆðµÄÁУ©£¬ÒÔ¼°´Ø±íÖеÄÁÐÖµ¡£ÒòΪ´ØÖÐµÄ±í¶¼±»´¢´æÔÚÏàͬµÄÊý¾Ý¿â¿éÖУ¬ËùÒÔʹÓôع¤×÷ʱ£¬I/O²Ù×÷¾Í¼õÉÙÁË¡£
......

ORACLE ³£Óòéѯ´óÈ«

oracle³£Óþ­µäSQL²éѯ
³£ÓÃSQL²éѯ£º
 
1¡¢²é¿´±í¿Õ¼äµÄÃû³Æ¼°´óС
 
select t.tablespace_name, round(sum(bytes/(1024*1024)),0) ts_size
from dba_tablespaces t, dba_data_files d
where t.tablespace_name = d.tablespace_name
group by t.tablespace_name;
 
2¡¢²é¿´±í¿Õ¼äÎïÀíÎļþµÄÃû³Æ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ