ORACLEÈçºÎ¸ù¾ÝITLÕÒµ½Ç°¾µÏñµÄ
SQL> select * from emp where sal=800;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
----- ---------- --------- ----- ----------- --------- --------- ------
7369 SMITH CLERK 7902 12/17/1980 800.00 20
1 rows selected
SQL> select dbms_rowid.rowid_relative_fno(rowid)file_id,dbms_rowid.rowid_block_number(rowid)block_id from emp where sal=800;
FILE_ID BLOCK_ID
---------- ----------
5 204
SQL> update emp set sal=1000 where sal=800;
1 row updated
SQL> alter system dump datafile 5 block 204;
ϵͳÒѸü¸Ä¡£
SQL> select d.value||'/'||lower(rtrim(i.instance, chr(0)))||'_ora_'||p.spid||'.trc' trace_file_name
2 from
3 ( select p.spid
4 from sys.v$mystat m,sys.v$session s,sys.v$process p
5 where m.statistic# = 1 and s.sid = m.sid and p.addr = s.paddr) p,
6 ( select t.instance from sys.v$thread t,sys.v$parameter v
7 where v.name = 'thread' and (v.value = 0 or t.thread# = to_number(v.value))) i,
8 (
Ïà¹ØÎĵµ£º
ËäȻѧϰJavaºÜ¾ÃÁË£¬×Ô¼ºÒ²Á¬½Ó¹ýһЩÊý¾Ý¿â£¬±ÈÈçmysqlÖ®ÀàµÄ£¬Èç½ñÄØ£¬Ò²Ñ§Ï°ÁËÒ»¶Îʱ¼äµÄOracle£¬È»¶øÄØ£¬½ñÌìÊÇÎÒµÚÒ»´ÎÁ¬½ÓOracle£¬ºÙºÙ£¬Ó¦¸Ã»¹²»ËãÌ«³Ù°É¡£
½ñÌìÄØ£¬Óе㱿׾£¬´ó¼ÒĪЦ£¡
ÎÒÕâÊÇÒ»¸ö²éѯÀý×Ó
Ê×ÏÈ£¬Ô ......
Oracle 11gµÄLinux°æ±¾ÔÚÐÞ¸ÄÁËMEMORY_TARGET»òÕßSGA_TARGETºóÆô¶¯¿ÉÄܻᱨ´í£º
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup
ORA-00845: MEMORY_TARGET not supported on this system
Õâ¸öÎÊÌâÊÇÓÉÓÚÉèÖÃSGAµÄ´óС³¬¹ýÁ˲Ù×÷Ï ......
×öÊý¾Ý¿â¿ª·¢»ò¹ÜÀíµÄÈ˾³£Òª´´½¨´óÁ¿µÄ²âÊÔÊý¾Ý£¬¶¯²»¶¯¾ÍÐèÒªÉÏÍòÌõ£¬Èç¹ûÒ»ÌõÒ»ÌõµÄ¼È룬ÄÇ»áÀË·Ñ´óÁ¿µÄʱ¼ä£¬±¾ÎĽéÉÜÁËOracleÖÐÈçºÎͨ¹ýÒ»ÌõSQL¿ìËÙÉú³É´óÁ¿µÄ²âÊÔÊý¾ÝµÄ·½·¨¡£
²úÉú²âÊÔÊý¾ÝµÄSQLÈçÏ£º
SQL> select rownum as id,
2 &nb ......
OracleµÄËø»úÖƹéÄÉ×ܽá
ËøÊÇ·ÀÖ¹ÔÚÁ½¸öÊÂÎñ²Ù×÷ͬһ¸öÊý¾ÝÔ´£¨±í»òÐУ©Ê±½»»¥ÆÆ»µÊý¾ÝµÄÒ»ÖÖ»úÖÆ¡£Oracle²ÉÓ÷âËø¼¼Êõ±£Ö¤²¢·¢²Ù×÷µÄ¿É´®ÐÐÐÔ¡£OracleµÄËø·ÖΪÁ½´ó
ÀࣺÊý¾ÝËø£¨Ò²³ÆDMLËø£©ºÍ×ÖµäËø¡£×ÖµäËøÊÇOracle
DBMSÄÚ²¿ÓÃÓÚ¶Ô×Öµä±íµÄ·âËø¡£×ÖµäËø°üÀ¨Óï·¨·ÖÎöËøºÍDDLËø£¬ÓÉDBMSÔÚ±ØÒª ......
ORACLEÖУ¬±í¿Õ¼äÊÇÊý¾Ý¹ÜÀíµÄ»ù±¾·½·¨£¬ËùÓÐÓû§µÄ¶ÔÏóÒª´æ·ÅÔÚ±í¿Õ¼äÖУ¬Ò²¾ÍÊÇÓû§ÓпռäµÄʹÓÃȨ£¬²ÅÄÜ´´½¨Óû§¶ÔÏó£®·ñÔòÊDz»³äÐí´´½¨¶ÔÏó£¬ÒòΪ¾ÍÊÇÏë´´½¨¶ÔÏó,Èç±í,Ë÷ÒýµÈ£¬Ò²Ã»Óеط½´æ·Å,Oracle»áÌáʾ:ûÓд洢Åä¶î£®¡¡¡¡Òò´Ë£¬ÔÚ´´½¨¶ÔÏó֮ǰ£¬Ê×ÏÈÒª·ÖÅä´æ´¢¿Õ¼ä.
·ÖÅä´æ´¢£¬¾ÍÒª´´½¨±í¿Õ¼ä£º¡¡¡¡
´´½¨±í¿Õ¼äÊ ......