Question

我想使用OCI接口从C ++调用Oracle存储过程，并使用输出SYS_REF_CURSOR作为过程的参数来迭代结果。我是OCI的新手，所以可能会遗漏一些简单的东西。大部分代码都来自此处：https://community.oracle.com/thread/507765?start=0&tstart=0

我的存储过程是：

CREATE OR REPLACE PROCEDURE FXT_TEST_CALL(CRESULTS OUT SYS_REFCURSOR) IS
sTESTQUERY VARCHAR2(4000);

BEGIN
sTESTQUERY := ' SELECT set_nam, cc_type from  fxt_con_rules';

OPEN CRESULTS FOR sTESTQUERY;
END 
FXT_TEST_CALL;

我的c ++代码片段是：

OCIError* pOciError;
int answer;
OCIStmt* pOciStatement;
char* sqlCharArray = "BEGIN FXT_TEST_CALL; END;";
char set_nam[40];
char cc_type[40];
OCIEnv* g_pOciEnvironment = NULL;
OCIServer* g_pOciServer = NULL;
OCISession* g_pOciSession = NULL;
OCISvcCtx* g_pOciServiceContext = NULL;
sb2* pIndicator=0;
sb2* pIndicator2=0;
sb2* pIndicator3=0;
OCIDefine* pOciDefine;
OCIDefine* pOciDefine2;
OCIBind* pBind;
OCIStmt* cursor;
answer = OCIHandleAlloc(g_pOciEnvironment, (void **)(&pOciStatement), OCI_HTYPE_STMT, 0, NULL);
answer = OCIStmtPrepare(pOciStatement, pOciError, (unsigned char *)sqlCharArray, strlen(sqlCharArray),OCI_NTV_SYNTAX, OCI_DEFAULT);
answer = OCIHandleAlloc(g_pOciEnvironment, (void **)(&cursor), OCI_HTYPE_STMT, 0, NULL);

// I get an error "ORA-01036: illegal variable name/number" after this line
answer = OCIBindByPos(pOciStatement,&pBind, pOciError, 1, &cursor, 0,SQLT_RSET, pIndicator2, 0,NULL, 0,0,OCI_DEFAULT);
answer = OCIStmtExecute(g_pOciServiceContext, pOciStatement, pOciError, 1, 0, NULL, NULL, OCI_COMMIT_ON_SUCCESS);
answer = OCIDefineByPos(cursor,&pOciDefine, pOciError,1,set_nam,40, SQLT_STR,pIndicator, 0, 0,OCI_DEFAULT);
answer = OCIDefineByPos(cursor,&pOciDefine2, pOciError,2,cc_type,40, SQLT_STR,pIndicator3, 0, 0,OCI_DEFAULT);

// loop for debug to see if set_nam and cc_type are being populated
int blah = 0;
while ((answer = OCIStmtFetch(cursor,pOciError, 1,OCI_FETCH_NEXT,OCI_DEFAULT)) == 0)
{
    blah++;
}

存储过程很难更改，所以更喜欢修改我的代码。 Oracle版本是：Oracle Database 11g企业版11.2.0.4.0版提前谢谢。

Answer 1

您已设置：

sqlCharArray = "BEGIN FXT_TEST_CALL; END;"

哪个没有绑定参数;你试图设置一个，因此错误，程序定义需要一个。你需要把它称为：

sqlCharArray = "BEGIN FXT_TEST_CALL(:1); END;"

通过OCI调用Oracle存储过程，并在C ++中使用out ref游标返回结果

1 个答案: