数据库读clob

[greenweather]

在AIX上的多线程开发，char test[512000];用的栈空间，有2个这么大的变量，好像AIX只支持600K的栈，所以会core，想用堆空间，虽然oracle proc里面编译选项是CPP,可是不让我char *test = new char[512000]；

int CEntityBase::readClob(OCIClobLocator *p_clob, char* buff)
{	
	struct sqlca sqlca;
	EXEC SQL CONTEXT USE:m_pWorkThread->m_pvSqlCtx;
	
	EXEC SQL BEGIN DECLARE SECTION;		
		OCIClobLocator *clob;		
		varchar *lvr;		
		int amt;		
		int bufsize;	
	EXEC SQL END DECLARE SECTION;		

#if 0
	if(sqlca.sqlcode != 0)	
	{		
		return sqlca.sqlcode;	
	}		
#endif

	bufsize = 2048;	
	clob = p_clob;	
	char* tmp = new char[2 + bufsize];	
	memset(tmp, 0, 2+bufsize);	
	lvr = (varchar *)tmp;	
	lvr->len = bufsize;	
	int len = 0;	
	amt = 0;	

	EXEC SQL WHENEVER NOT FOUND DO break;	
	while (TRUE)	
	{        
		memset(lvr,0,2+bufsize);        
		EXEC SQL LOB READ :amt FROM :clob INTO :lvr WITH LENGTH :bufsize;        
		strcat(buff, (char *)lvr->arr);
//		memcpy(buff + len, lvr->arr, lvr->len);
//		len += lvr->len;	
	}	

	EXEC SQL WHENEVER NOT FOUND CONTINUE;	
	strcat(buff, (char *)lvr->arr);
//	memcpy(buff + len, lvr->arr, lvr->len);
//	len += lvr->len;
//	buff[len] = 0;	
	delete[] tmp;
	return 0;
}

OCIClobLocator *sbillpic1data_VALUE;
readClob（sbillpic1data_VALUE， test）；
CUFcString a = test;
其实就是最后想把test赋值给a，

[qq120848369]

malloc啊

[shenghuiping2001]

其实是数据库的问题，跟是否为 aix 没有关系。

[justkk]

试试定义为静态变量
static char test[512000]

[greenweather]

不能定义char*确实是数据库proc的问题

[greenweather]

不过不能定义512000这么大的总是AIX的栈问题吧？

[greenweather]

测试，malloc不行