Advanced Queuing - Oracle

(ub4) OCI_ATTR_SERVER, (OCIError *) errhp);
AQ and Memory Usage
/* Allocate a user context handle: */
OCIHandleAlloc((dvoid *)envhp, (dvoid **)&usrhp, (ub4) OCI_HTYPE_SESSION,
(size_t) 0, (dvoid **) 0);
OCIAttrSet((dvoid *)usrhp, (ub4)OCI_HTYPE_SESSION,
(dvoid *)"scott", (ub4)strlen("scott"), OCI_ATTR_USERNAME, errhp);
OCIAttrSet((dvoid *)usrhp, (ub4)OCI_HTYPE_SESSION,
(dvoid *)"tiger", (ub4)strlen("tiger"), OCI_ATTR_PASSWORD, errhp);
checkerr(errhp, OCISessionBegin (svchp, errhp, usrhp, OCI_CRED_RDBMS,
OCI_DEFAULT));
OCIAttrSet((dvoid *)svchp, (ub4)OCI_HTYPE_SVCCTX,
(dvoid *)usrhp, (ub4)0, OCI_ATTR_SESSION, errhp);
do {
deqmesg(buf, &buflen);
printf("%.*s\n", buflen, buf);
} while(1);
} /* end main */
static void checkerr(errhp, status)
LNOCIError *errhp;
sword status;
{
text errbuf[512];
ub4 buflen;
sb4 errcode;
if (status == OCI_SUCCESS) return;
switch (status)
{
case OCI_ERROR:
OCIErrorGet ((dvoid *) errhp, (ub4) 1, (text *) NULL, &errcode,
errbuf, (ub4) sizeof(errbuf), (ub4) OCI_HTYPE_ERROR);
printf("Error - %s\n", errbuf);
break;
case OCI_INVALID_HANDLE:
printf("Error - OCI_INVALID_HANDLE\n");
break;
default:
Oracle Advanced Queuing by Example A-83