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Top Forums UNIX for Dummies Questions & Answers ORA-12154: TNS:could not resolve service name Post 302369608 by pludi on Monday 9th of November 2009 06:55:34 AM
Old 11-09-2009
You can (most of the time) get a pretty good description of the causes of an error by running oerr, eg
Code:
$ oerr ora 12154
12154, 00000, "TNS:could not resolve service name"
// *Cause:  The service name specified is not defined correctly in the
// TNSNAMES.ORA file.
// *Action:  Make the following checks and correct the error:
//           - Verify that a TNSNAMES.ORA file exists and is in the proper
//             place and accessible. See the operating system specific manual
//             for details on the required name and location.
//           - Check to see that the service name exists in one of the
//             TNSNAMES.ORA files and add it if necessary.
//           - Make sure there are no syntax errors anywhere in the file.
//             Particularly look for unmatched parentheses or stray characters.
//             Any error in a TNSNAMES.ORA file makes it unusable. See
//             Chapter 4 in the SQL*Net V2 Administrator's Guide. If
//             possible, regenerate the configuration files using the Oracle
//             Network Manager.

 

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OCI_PASSWORD_CHANGE(3)													    OCI_PASSWORD_CHANGE(3)

oci_password_change - Changes password of Oracle's user

SYNOPSIS
bool oci_password_change (resource $connection, string $username, string $old_password, string $new_password) DESCRIPTION
resource oci_password_change (string $dbname, string $username, string $old_password, string $new_password) Changes password for user with $username. The oci_password_change(3) function is most useful for PHP command-line scripts, or when non-persistent connections are used throughout the PHP application. PARAMETERS
o $connection - An Oracle connection identifier, returned by oci_connect(3) or oci_pconnect(3). o $username - The Oracle user name. o $old_password - The old password. o $new_password - The new password to be set. o $dbname - The database name. RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 oci_password_change(3) example changing the password of an already connected user <?php $dbase = 'localhost/orcl'; $user = 'cj'; $current_pw = 'welcome'; $new_pw = 'geelong'; $c = oci_pconnect($user, $current_pw, $dbase); oci_password_change($c, $user, $current_pw, $new_pw); echo "New password is : " . $new_pw . " "; ?> Example #2 oci_password_change(3) example of connecting and changing the password in one step <?php $dbase = 'localhost/orcl'; $user = 'cj'; $current_pw = 'welcome'; $new_pw = 'geelong'; $c = oci_pconnect($user, $current_pw, $dbase); if (!$c) { $m = oci_error(); if ($m['code'] == 28001) { // "ORA-28001: the password has expired" // Login and reset password at the same time $c = oci_password_change($dbase, $user, $current_pw, $new_pw); if ($c) { echo "New password is : " . $new_pw . " "; } } } if (!$c) { // The original error wasn't 28001, or the password change failed $m = oci_error(); trigger_error('Could not connect to database: '. $m['message'], E_USER_ERROR); } // Use the connection $c ?> NOTES
Note Changing the password either with this function or directly in Oracle should be done carefully. This is because PHP applications may continue to successfully reuse persistent connections by authenticating with the old password. The best practice is to restart all web servers whenever the user password is changed. Note If upgrading the Oracle client libraries or the database from a release prior to 11.2.0.3 to version 11.2.0.3 or higher, oci_pass- word_change(3) may give the error "ORA-1017: invalid username/password" unless both client and server versions are upgraded at the same time. Note The second oci_password_change(3) syntax is available since OCI8 version 1.1. Note In PHP versions before 5.0.0 you must use ocipasswordchange(3) instead. This name still can be used, it was left as alias of oci_password_change(3) for downwards compatability. This, however, is deprecated and not recommended. PHP Documentation Group OCI_PASSWORD_CHANGE(3)
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