OracleÊý¾Ýµ¼³öµ½DBFµÄÎÊÌâ
OracleÊý¾Ýµ¼³öºÜ¼òµ¥£¬µ«ÎªÁËÌá¸ßËÙ¶È£¬ÎÒÒ»°ã²»Ö±½Óµ¼³ö³ÉDBF£¬¶øÊÇÏȵ¼³ö³ÉCSV¸ñʽµÄÎı¾Îļþ¡£
½ñÌì¾ÍÓöµ½Ò»¸öÎÊÌ⣬µ¼³öµÄcsvÔÚת»»³Édbfʱ³öÏÖÁ˺ܶà¿ÕÐС£¾¹ý²éÕÒÎÊÌ⣬·¢ÏÖÊÇ×Ö¶ÎÖк¬Óл»Ðзûµ¼Ö¡£
ʹÓÃ
select Replace(zsyj,chr(13)||chr(10),'') as SXPD from TableName
½â¾öÎÊÌâ¡£
Ïà¹ØÎĵµ£º
1. ϵͳÅäÖùý³Ì
2.1. oracle°²×°Ìõ¼þ¼ì²é
2.1.1. Ó²¼þ¼ì²é
¼ì²éÓ²¼þÇé¿öÊÇ·ñ·ûºÏoracle 10g µÄ°²×°ÒªÇó¡£ÒÔrootµÇ¼ϵͳ£¬ÓÃϱíÃüÁîÊä³öµÄÖµÓ¦´óÓÚ»òµÈÓÚ½¨ÒéÖµ¡£
¼ì²éÏîÄ¿
ÃüÁî ......
OracleÖÐstart with...connect by prior×Ó¾äÓ÷¨
connect by Êǽṹ»¯²éѯÖÐÓõ½µÄ£¬Æä»ù±¾Óï·¨ÊÇ£º
select ... from tablename start with Ìõ¼þ1
connect by Ìõ¼þ2
where Ìõ¼þ3;
Àý£º
select * from table
start with org_id = 'HBHqfWGWPy'
connect by prior org_id = parent_id;
¼òµ ......
Ç¿ÖÆÇл»ÖØ×öÈÕÖ¾
ALTER SYSTEM SWITCH LOGFILE; Ç¿ÖÆ²úÉú¼ì²éµã
ALTER SYSTEM CHECKPOINT; ¼ä½Ó²úÉú¼ì²éµã(É趨ʵÀý»Ö¸´Ê±¼ä²»³¬¹ýmmÃë,Ò༴ִÐмì²éµãÖ®ºóÔËÐг¬¹ýÕâ¸öʱ¼ä¾ÍÔÙ´ÎÖ´Ðмì²éµã)
ALTER SYSTEM SET FAST_START_MTTR_TARGET = ÃëÊý; »ñÈ¡ÖØ×öÈÕÖ¾ÎļþÐÅÏ¢
SELECT group#, ......
http://tianzt.blog.51cto.com/459544/171759
´ËÎÄ´ÓÒÔϼ¸¸ö·½ÃæÀ´ÕûÀí¹ØÓÚ·ÖÇø±íµÄ¸ÅÄî¼°²Ù×÷:
1.±í¿Õ¼ä¼°·ÖÇø±íµÄ¸ÅÄî
2.±í·ÖÇøµÄ¾ßÌå×÷ÓÃ
3.±í·ÖÇøµÄÓÅȱµã
&nbs ......
Redo Byte Address (RBA)
Recent entries in the redo thread of an Oracle instance are addressed using a 3-part redo byte address, or RBA. An RBA is comprised of
the log file sequence number (4 bytes)
the log file block number (4 bytes)
the byte offset into the block at which the redo record sta ......