cursor_name CURSOR DYNAMIC FOR SELECT * FROM employee ORDER BY salary DESC; BEGIN OPEN cursor_name; loop FETCH cursor_name INTO var_employee; -- 处理查询结果,如打印员工信息 PRINT var_employee; EXIT WHEN cursor_name%NOTFOUND; END LOOP; CLOSE cursor_name; END; / ``` 5.总结与建议 Oracle...
create or replace package dynamic_cursor is type t_crs isref cursor; procedure dyn_sel ( tab_name in varchar2, field_name in varchar2, val in varchar2, crs in out t_crs); procedure openCursor; end dynamic_cursor; / create or replace package body dynamic_cursor as procedure dyn_sel (...
4type cursor2isrefcursorreturnd2t_log%rowtype; 5 6cs_cursor2 cursor2; 7begin 8dbms_output.put_line('dynamic cursor define ok'); 9 10opencs_cursor2forselect*fromd2t_log; 11loop 12fetchcs_cursor2intor_d2tlog; 13exitwhencs_cursor2%notfound; 14dbms_output.put_line('activeid='||r_d2tl...
Oracle Database need not verify thata cursor is in the cache because it cannot be deallocated while an applicationcursor associated with it is open.
This is also the primary cause for cursor leakage. Clients (especially Java apps in my experience) use ref cursors - but forget to close them after use. The open cursor handle count quickly runs up and an ORA error results.. with the Java developers then thinking there is something wrong ...
ojdbc8dms.jar: Oracle Dynamic Monitoring Service (DMS)를 지원하는 코드가 포함되어 있다는 점을 제외하면 ojdbc8.jar와 동일합니다. JDBC 로깅 지원도 일부 포함되어 있습니다. 해당 파일은 dms.jar도 클래스...
Oracle RAC-Datenaffinität und Shard-Leitsystem für APIs für Mid-Tiers Sicherheit: Automatische Anbieterlösung für OraclePKIProvider; Unterstützung von Key Store Service (KSS) und HTTPS-Proxy-Unterstützung Datentypen: Zugriff auf assoziative PL/SQL-Arrays; Oracle REF CURSOR als IN-Bindung...
1)、概述 在原来的open-for,fetch,close语句处理动态多行查询语句时,默认每次提取单行数据,循环提取。 通过在fetch语句中引入bulk子句,可以一次提取所有数据。 2)、语法 fetch dynamic_cursor bulk collect into define_name[,define_name…]; 3)、处理多行查询语句 declare type empcurtyp is ref cursor; emp_...
--查看游标数show parameter open_cursors;--查看当前打开的游标数目selectcount(*)fromv$open_cursor;--修改最大游标数altersystemsetopen_cursors=1000 scope=both 1. 2. 3. 4. 5. 6. 3、字符集(建议建库时就设置好) 复制 --查询数据库服务端的字符集:NLS_LANG = language_territory.charsetselect*fromnl...
たとえば、HOLD_CURSOR=YESおよびRELEASE_CURSOR=YESをユニットAには指定し、ユニットBには指定しなかった場合、ユニットAのSQL文はこれらのHOLD_CURSOR値とRELEASE_CURSOR値で実行されますが、ユニットBのSQL文はデフォルト値で実行されます。ただし、Oracleに接続すると有効になるMAXOPENCURSORS設定...