Benefits of Implicit Connection Pooling Implicit Connection Pooling with DRCP increases the multiplexing of database connections without relying on the application's explicit opening or closing of connection calls. It allows applications that hold connections open for a long time to share their database...
Again, when JDBC code is running inside the target server, the connection is an implicit data channel, not an explicit connection instance as from a client. It should never be closed. I'm getting OutofMemory Error when I set a higher default prefetch value. ...
1、Decode()函数使用技巧 含义解释: DECODE(条件,值1,翻译值1,值2,翻译值2,...值n,翻译值n,缺省值) 该函数的含义如下: IF 条件=值1 THEN RETURN(翻译值1) ELSIF 条件=值2 THEN RETURN(翻译值2) ... ELSIF 条件=值n THEN RETURN(翻译值n) ELSE RETURN(缺省值) END IF 2、Instr函数 instr(a,b...
implicit versus explicit, 2-38 when performed implicitly, 2-36 when specified explicitly, 2-37 data definition language events and triggers, 7-430 statements, 6-1 and implicit commit, 6-2 causing recompilation, 6-2 PL/SQL support of, 6-2 data dictionary adding comments to,...
ERROR [42000] [Sybase][ODBC Driver][Adaptive Server Enterprise]Implicit conversion ERROR [42S02] [Microsoft][ODBC Excel Driver] The Microsoft Jet database engine could not find the object. ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified...
int main() { static const char func_GU[4] = "GU "; static const char func_ISRT[4] = "ISRT"; char ssa_name[] = "ORDER ORDER (ORDERKEY = 666666)"; int rc; char msg_seg_io_area[n]; char db_seg_io_area[n]; char alt_msg_seg_out[n]; ...
Cursors allow the programmer to retrieve data from a table and perform actions on that data one row at a time. There are two types of cursors implicit cursors and explicit cursors. Implicit cursors For SQL queries returning single row PL/SQL declares implicit cursors. Implicit cursors are simple...
Datatype can be either explicit (e.g. VARCHAR2) or implicit with %TYPE Body is the same as an anonymous block Syntax for Creating Procedures Use CREATE PROCEDURE followed by the name, optional parameters, and keyword IS or AS. Add the OR REPLACE option to overwrite an existing procedure. ...
1. 隐式游标所需代码更少 2. 隐式游标更快 3. 隐式游标提供了NO_DATA_FOUND 和 TOO_MANY_ROWS 这两种异常 所以相对来说使用隐式游标更方便。 参考:http://www.oracle-base.com/articles/misc/implicit-vs-explicit-cursors-in-oracle-plsql.php
OPEN一个游标也就是申请一块内存。 常规上我们把游标分为三类:隐式(implicit cursor)的,显示(explicit cursor)的,与动态游标(Ref cursor)。游标经历:声明(declare), 打开(open), 从游标中获取记录(Fetch into),关闭(close)。简单的过程,完 oracle 职场...