130 lines
4.9 KiB
HTML
130 lines
4.9 KiB
HTML
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<title>Example: Initialization and connection in a DB2 UDB CLI application</title>
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<body id="rzadpexiniterm"><a name="rzadpexiniterm"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Example: Initialization and connection in a DB2<sup>®</sup> UDB CLI application</h1>
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<div><div class="section"><div class="note"><span class="notetitle">Note:</span> By using the code examples, you agree to the terms
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of the <a href="codedisclaimer.htm">Code license and disclaimer information</a>.</div>
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</div>
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<div class="example"> <pre>/*******************************************************
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** file = basiccon.c
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** - demonstrate basic connection to two datasources.
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** - error handling ignored for simplicity
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**
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** Functions used:
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**
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** SQLAllocConnect SQLDisconnect
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** SQLAllocEnv SQLFreeConnect
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** SQLConnect SQLFreeEnv
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**
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**
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********************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include "sqlcli.h"
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int
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connect(SQLHENV henv,
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SQLHDBC * hdbc);
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#define MAX_DSN_LENGTH 18
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#define MAX_UID_LENGTH 10
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#define MAX_PWD_LENGTH 10
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#define MAX_CONNECTIONS 5
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int
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main()
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{
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SQLHENV henv;
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SQLHDBC hdbc[MAX_CONNECTIONS];
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/* allocate an environment handle */
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SQLAllocEnv(&henv);
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/* Connect to first data source */
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connect(henv, &hdbc[0];);
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/* Connect to second data source */
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connect(henv, &hdbc[1];);
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/********* Start Processing Step *************************/
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/* allocate statement handle, execute statement, and so forth */
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/********* End Processing Step ***************************/
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printf("\nDisconnecting .....\n");
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SQLDisconnect(hdbc[0]); /* disconnect first connection */
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SQLDisconnect(hdbc[1]); /* disconnect second connection */
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SQLFreeConnect(hdbc[0]); /* free first connection handle */
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SQLFreeConnect(hdbc[1]); /* free second connection handle */
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SQLFreeEnv(henv); /* free environment handle */
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return (SQL_SUCCESS);
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}
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/********************************************************************
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** connect - Prompt for connect options and connect **
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********************************************************************/
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int
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connect(SQLHENV henv,
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SQLHDBC * hdbc)
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{
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SQLRETURN rc;
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SQLCHAR server[MAX_DSN_LENGTH + 1], uid[MAX_UID_LENGTH + 1],
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pwd[MAX_PWD_LENGTH
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+ 1];
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SQLCHAR buffer[255];
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SQLSMALLINT outlen;
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printf("Enter Server Name:\n");
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gets((char *) server);
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printf("Enter User Name:\n");
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gets((char *) uid);
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printf("Enter Password Name:\n");
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gets((char *) pwd);
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SQLAllocConnect(henv, hdbc);/* allocate a connection handle */
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rc = SQLConnect(*hdbc, server, SQL_NTS, uid, SQL_NTS, pwd, SQL_NTS);
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if (rc != SQL_SUCCESS) {
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printf("Error while connecting to database\n");
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return (SQL_ERROR);
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} else {
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printf("Successful Connect\n");
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return (SQL_SUCCESS);
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}
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}
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</pre>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzadphditerm.htm" title="The initialization task allocates and initializes environment handles and connection handles.">Initialization and termination tasks in a DB2 UDB CLI application</a></div>
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</div>
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</div>
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</body>
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