Advanced Queuing - Oracle

AQ and Memory Usage
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:
printf("Error - %d\n", status);
break;
}
exit(-1);
} /* end checkerr */
Enqueuing Messages (Reuse Memory) Using OCI
This program, enqreuse.c, enqueues each line of text into a queue 'msgqueue'
that has been created in scott's schema by executing create_types.sql. Each line
of text entered by the user is stored in the queue until user enters EOF. In this
program the enqueue subroutine reuses the memory for the message payload, as
well as the AQ message properties descriptor.
#ifndef OCI_ORACLE
#include
#endif
#include
static void checkerr(OCIError *errhp, sword status);
static void enqmesg(ub4 msgno, text *buf);
A-76 Oracle9i Application Developer’s Guide - Advanced Queuing