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Unable to connect to Oracle 12c

#1
Hi,

We have recently upgraded the database from Oracle 11g to 12c. However the application developed using CodeIgniter2 throws exception upon logging in. Please see the error below:

ERROR - 2017-07-12 16:50:35 --> Severity: Warning --> oci_connect(): ORA-28040: No matching authentication protocol /system/database/drivers/oci8/oci8_driver.php 230

It looks like the database driver of CodeIgniter does not support Oracle 12c. Please advise what would be the solution for the issue. 
Thanks in advance. 

Regards,
Steven
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#2
My case is similar to yours. Anyone know solution?
No SEO spam
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#3
Hi.
I notice that you use a prerequist file located in produit / 12.1.0 / rdbms / admin... that means that you've already installed the 12.1.0 before proceed the migration ?
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#4
Did you install the Oracle Instant Client in Windows or Linux ?
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