oracle¹ÜÀí³£ÓÃSQL
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¿Õ¼äÎïÀíÎļþµÄÃû³Æ¼°´óС
select tablespace_name, file_id, file_name,
round(bytes/(1024*1024),0) total_space
from dba_data_files
order by tablespace_name;
3¡¢²é¿´»Ø¹ö¶ÎÃû³Æ¼°´óС
select segment_name, tablespace_name, r.status,
(initial_extent/1024) InitialExtent,(next_extent/1024) NextExtent,
max_extents, v.curext CurExtent
from dba_rollback_segs r, v$rollstat v
Where r.segment_id = v.usn(+)
order by segment_name ;
4¡¢²é¿´¿ØÖÆÎļþ
select name from v$controlfile;
5¡¢²é¿´ÈÕÖ¾Îļþ
select member from v$logfile;
6¡¢²é¿´±í¿Õ¼äµÄʹÓÃÇé¿ö
select sum(bytes)
Ïà¹ØÎĵµ£º
ÓÃJavaÀ´²Ù×÷Êý¾Ý¿â£¬ÓÐÈçϼ¸ÖÖ·½Ê½£º
1JDBC-ODBCÇÅ£ºODBCÊý¾ÝÔ´ÔÚ²Ù×÷ϵͳ²ãÃæ¸øÓèÁËÖ§³Ö£¬ÎÒÃÇ¿ÉÒÔ²»ÓÃÁ˽âµ×²ãµ½µ×ÊÇ·â×°µÄÄÄÖÖÊý¾ÝÔ´£¬Ò²ÕÕÑù¿ÉÒÔÍê³É¶ÔÊý¾ÝµÄ²Ù×÷¡£µ«ÊÇËüÓÐÆ½Ì¨ÒÀÀµÐÔ£¬²»Ì«ÍƼöʹÓá£
2Javaµ½±¾µØAPI
3Javaµ½ÍøÂçÐÒé
4Javaµ½Êý¾Ý¿âÐÒ飺ËÙ¶È×î¿ì
Á¬½ÓÊý¾Ý¿â¿ÉÒÔ·ÖΪËIJ½£º
A¼ÓÔØÇý¶¯³ÌÐò£¨Ï ......
×î½üÔÚʹÓÃOracle×öÎļþÉÏ´«£¬ÒªÇó½«ÎļþÊý¾Ý±£´æµ½Êý¾Ý¿âÖС£OracleÌṩÁËBlobÓÃÀ´´æ´¢¶þ½øÖÆ´ó¶ÔÏóÊý¾Ý£¬¿ÉÊÇËüºÍJava.sqlÀïÃæµÄBlob²»¼æÈÝ£¬¾³£µ¼ÖÂBlob×Ö¶ÎÎÞ·¨Ëø¶¨»òÕß²Ù×÷ʧ°Ü¡£ÓÉÓÚÒÔǰûÓÐ×ö¹ýÕâÑùµÄÀý×Ó£¬ËùÒÔ»¨Á˲»ÉÙʱ¼ä²Å½â¾ö¡£
ÎÒʹÓõÄÊÇstruts2.1.8+spring2.5+hibernate3.2£¬ÏÂÃæÊÇÏà¹Ø´úÂ룺
springÅäÖÃ ......
1)Library CacheµÄÃüÖÐÂÊ:
.¼ÆË㹫ʽ:Library Cache Hit Ratio = sum(pinhits) / sum(pins)
SQL>SELECT SUM(pinhits)/sum(pins) from V$LIBRARYCACHE;
ͨ³£ÔÚ98%ÒÔÉÏ£¬·ñÔò£¬ÐèÒªÒª¿¼ÂǼӴó¹²Ïí³Ø£¬°ó¶¨±äÁ¿£¬ÐÞ¸Äcursor_sharingµÈ²ÎÊý¡£
2)¼ÆËã¹²Ïí³ØÄÚ´æÊ¹ÓÃÂÊ:
SQL>SELECT ......
2008-09-02
J2EE²Ù×÷OracleµÄclobÀàÐÍ×Ö¶Î
¹Ø¼ü×Ö: java
OracleÖУ¬Varchar2Ö§³ÖµÄ×î´ó×Ö½ÚÊýΪ4KB£¬ËùÒÔ¶ÔÓÚijЩ³¤×Ö·û´®µÄ´¦Àí£¬ÎÒÃÇÐèÒªÓÃCLOBÀàÐ͵Ä×ֶΣ¬CLOB×Ö¶Î×î´óÖ§³Ö4GB¡£
»¹ÓÐÆäËû¼¸ÖÖÀàÐÍ£º
blob:¶þ½øÖÆ,Èç¹ûexe,zip
clob:µ¥×Ö½ÚÂë,±ÈÈçÒ»°ãµÄÎı¾Îļþ.
nlob:¶à×Ö½ÚÂë,ÈçUTF¸ñʽµÄÎļþ.
ÒÔÏÂ¾Í ......
¡¡¡¡OracleÊý¾Ýµ¼Èëµ¼³öimp/exp¾ÍÏ൱ÓÚoracleÊý¾Ý»¹ÔÓ뱸·Ý¡£expÃüÁî¿ÉÒÔ°ÑÊý¾Ý´ÓÔ¶³ÌÊý¾Ý¿â·þÎñÆ÷µ¼³öµ½±¾µØµÄdmpÎļþ£¬impÃüÁî¿ÉÒÔ°ÑdmpÎļþ´Ó±¾µØµ¼Èëµ½Ô¶´¦µÄÊý¾Ý¿â·þÎñÆ÷ÖС£ ÀûÓÃÕâ¸ö¹¦ÄÜ¿ÉÒÔ¹¹½¨Á½¸öÏàͬµÄÊý¾Ý¿â£¬Ò»¸öÓÃÀ´²âÊÔ£¬Ò»¸öÓÃÀ´ÕýʽʹÓÃ……
¡¡¡¡OracleÊý¾Ýµ¼Èëµ¼³öimp/exp¾ÍÏàµ±Ó ......