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SELECT USERNAME,DEFAULT_TABLESPACE, TEMPORARY_TABLESPACE, PROFILE, ACCOUNT_STATUS, CREATED from dba_users; ²éѯÓû§¿Õ¼äʹÓúÍÉÏÏÞÇé¿ö
SELECT username, tablespace_name, bytes/1024/1024 space_used_in_mb, max_bytes/1024/1024 max_space_in_mb from dba_ts_quotas; ´´½¨Óû§
CREATE USER Óû§Ãû IDENTIFIED BY ¿ÚÁî DEFAULT TABLESPACE ±í¿Õ¼äÃû TEMPORARY TABLESPACE ±í¿Õ¼äÃû QUOTA {ÕýÕûÊý[K|M] | UNLIMITED} ON ±í¿Õ¼äÃû PASSWORD EXPIRE PROFILE ¸ÅÒªÎļþÃû ¸Ä±äÓû§±í¿Õ¼äÅä¶î
ALTER USER Óû§Ãû QUOTA 38M ON ±í¿Õ¼äÃû; ɾ³ýÓû§. É÷ÓÃ,Óû§Ïà¹Ø¶ÔÏóÒ²½«Ïûʧ.
DROP USER Óû§Ãû [CASCADE]; Ëø¶¨ºÍ½âËøÓû§
ALTER USER ̞ ACCOUNT UNLOCK|LOCK;



ÆôÓÃ×ÊÔ´ÏÞÖÆ.·ñÔò¸ÅÒªÎļþÖеĶ¨Òå²»Æð×÷ÓÃ.
a.)Ð޸IJÎÊýÎļþ, RESOURCE_LIMIT = TRUE
b.)ʹÓÃÃüÁî, ALTER SYSTEM SET RESOURCE_LIMIT = TRUE; ²éѯ¸ÅÒªÎļþÇé¿ö. RESOURCE_TYPEΪKERNELʱ¼´ÊÇ×ÊÔ´ÏÞÖÆ.PASSWORDΪ¿ÚÁȫÏÞÖÆ.
SELECT * from dba_profiles; ´´½¨×ÊÔ´ÏÞÖƵĸÅÒªÎļþ. ×î´óÖµ¿ÉΪÕýÕûÊý,UNLIMITED»òDEFAULT.
CREATE PROFILE ¸ÅÒªÎļþÃû LIMIT
   [SESSIONS_PER_USER ×î´óÖµ]     
   [CPU_PER_SESSION ×î´óÖµ]          --×ܹ²µÄCPUʹÓÃʱ¼ä.µ¥Î»ÊÇ°Ù·ÖÖ®Ò»Ãë
   [CONNECT_TIME ×î´óÖµ]               --Á¬½Óʱ¼ä,µ¥Î»ÊÇ·ÖÖÓ
   [IDLE_TIME ×î´óÖµ]                         --·þÎñÆ÷¶Ë½ø³ÌµÄÏÞÖÆʱ¼ä,µ¥Î»ÊÇ·ÖÖÓ
   [LOGICAL_READS_PER_SESSION ×î´óÖµ]       --´ÅÅ̺ÍÄÚ´æ×î´ó¶ÁÈ¡Êý¾Ý¿éÊý
   [CPU_PER_CALL ×î´óÖµ]
   [LOGICAL_READS_PER_CALL ×î´óÖµ] ´´½¨¿ÚÁîÏÞÖƵĸÅÒªÎļþ.¿ÉÒÔÓë×ÊÔ´ÏÞÖÆΪͬһ¸ÅÒªÎļþ.ÆäÖÐPASSWORD_REUSE_MAXºÍPASSWORD_REUSE_TIME


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ORACLE DBAѧϰ±Ê¼Ç ¹ÜÀí¹éµµÈÕÖ¾Îļþ

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Oracle dataguardÅäÖÃStep by Step

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1.1 ÉèÖÃÖ÷¿âµÄforce loggingģʽ
SQL> alter database force logging;
Database altered.
1.2 ´´½¨Ö÷¿âÃÜÂëÎļþ
$ orapwd file=orapw$ORACLE_SID password=thunis entries=4
1.3 ÅäÖÃÖ÷¿âstandby redo log£¬²¢ÑéÖ¤½á¹û
SQL> alter database add standby logfile group 4('/u01/app/oradata/guar ......

CMDÏ´´½¨OracleÊý¾Ý¿â£¨ÒÔOracle10gΪÀý£©

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Oracle RMAN¿ìËÙÈëÃÅ

1.ʲôÊÇRMAN£¿
¡¡¡¡RMAN¿ÉÒÔÓÃÀ´±¸·ÝºÍ»¹Ô­Êý¾Ý¿âÎļþ¡¢¹éµµÈÕÖ¾ºÍ¿ØÖÆÎļþ¡£ËüÒ²¿ÉÒÔÓÃÀ´Ö´ÐÐÍêÈ«»ò²»ÍêÈ«µÄÊý¾Ý¿â»Ö¸´¡£
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¡¡¡¡RMAN¿ÉÒÔÓÉOEMµÄBackup Manager ......
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