Advanced Queuing - Oracle

Registering for Notification [Specifying Subscription Name—Multiconsumer Queue]
/* Registrations are for AQ namespace */
ub4 namespace = OCI_SUBSCR_NAMESPACE_AQ;
/* The context fot the callback */
ub4 ctx[5] = {0,0,0,0,0};
printf("Initializing OCI Process\n");
/* The OCI Process Environment must be initialized with OCI_EVENTS */
/* OCI_OBJECT flag is set to enable us dequeue */
(void) OCIInitialize((ub4) OCI_EVENTS|OCI_OBJECT, (dvoid *)0,
(dvoid * (*)(dvoid *, size_t)) 0,
(dvoid * (*)(dvoid *, dvoid *, size_t))0,
(void (*)(dvoid *, dvoid *)) 0 );
printf("Initialization successful\n");
/* The standard OCI setup */
printf("Initializing OCI Env\n");
(void) OCIEnvInit((OCIEnv **) &envhp, OCI_DEFAULT, (size_t) 0,
(dvoid **) 0 );
(void) OCIHandleAlloc( (dvoid *) envhp, (dvoid **) &errhp, OCI_HTYPE_ERROR,
(size_t) 0, (dvoid **) 0);
/* Server contexts */
(void) OCIHandleAlloc( (dvoid *) envhp, (dvoid **) &srvhp, OCI_HTYPE_SERVER,
(size_t) 0, (dvoid **) 0);
(void) OCIHandleAlloc( (dvoid *) envhp, (dvoid **) &svchp, OCI_HTYPE_SVCCTX,
(size_t) 0, (dvoid **) 0);
printf("connecting to server\n");
(void) OCIServerAttach( srvhp, errhp, (text *)"", strlen(""), 0);
printf("connect successful\n");
/* Set attribute server context in the service context */
(void) OCIAttrSet( (dvoid *) svchp, OCI_HTYPE_SVCCTX, (dvoid *)srvhp,
(ub4) 0, OCI_ATTR_SERVER, (OCIError *) errhp);
(void) OCIHandleAlloc((dvoid *) envhp, (dvoid **)&authp,
(ub4) OCI_HTYPE_SESSION, (size_t) 0, (dvoid **) 0);
11-62 Oracle9i Application Developer’s Guide - Advanced Queuing