08-13-2004
First, did passing the schema name correct your problem? If so, you will need to capture this information in some manner. We too have many instances, the environment is setup in such a way that there is an environment file for Oracle, much like you have already defined, and a variable gets set depending on the system [instance of oracle] the user is attempting to access, this variable is passed to the oraenv program.
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LEARN ABOUT X11R4
pam_putenv
PAM_PUTENV(3) Linux-PAM Manual PAM_PUTENV(3)
NAME
pam_putenv - set or change PAM environment variable
SYNOPSIS
#include <security/pam_appl.h>
int pam_putenv(pam_handle_t *pamh, const char *name_value);
DESCRIPTION
The pam_putenv function is used to add or change the value of PAM environment variables as associated with the pamh handle.
The pamh argument is an authentication handle obtained by a prior call to pam_start(). The name_value argument is a single NUL terminated
string of one of the following forms:
NAME=value of variable
In this case the environment variable of the given NAME is set to the indicated value: value of variable. If this variable is already
known, it is overwritten. Otherwise it is added to the PAM environment.
NAME=
This function sets the variable to an empty value. It is listed separately to indicate that this is the correct way to achieve such a
setting.
NAME
Without an '=' the pam_putenv() function will delete the corresponding variable from the PAM environment.
pam_putenv() operates on a copy of name_value, which means in contrast to putenv(3), the application is responsible to free the data.
RETURN VALUES
PAM_PERM_DENIED
Argument name_value given is a NULL pointer.
PAM_BAD_ITEM
Variable requested (for deletion) is not currently set.
PAM_ABORT
The pamh handle is corrupt.
PAM_BUF_ERR
Memory buffer error.
PAM_SUCCESS
The environment variable was successfully updated.
SEE ALSO
pam_start(3), pam_getenv(3), pam_getenvlist(3), pam_strerror(3), pam(7)
Linux-PAM Manual 06/04/2011 PAM_PUTENV(3)