> For the complete documentation index, see [llms.txt](https://docs.infotopics.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.infotopics.com/writebackextreme/features/database-connections/oracle.md).
# Oracle
Most connections to Orcale work out-of-the box.
> #### ⚠️ TNS Support Availability
>
> Please note that Oracle TNS support is currently limited to specific versions of WriteBackExtreme.
>
> At this time:
>
> * TNS support is available from **version 5.7.5 and is not supported in 6.x versions.**
> * TNS support is **not yet available in version 6.x**, due to changes in the underlying database engine
>
> We are planning to support this in 6.x in a future update.
Occasionally we get questions about advanced configuration of the connection. We do support this but this requires advanced configuration on our side as-well.
For example, when your Oracle instance requires SSL. it will throw an error like this:
```
oci_connect(): ORA-12270: Client NOT using TCPS protocol to connect to server
```
In this case you need to create an .ora file on your system that contains the WALLET\_LOCATION to the .pem file.
## How to configure .ora configuration files:
Within the configuration file (wbe.config.toml) please add the following "tns\_admin" environment key to the section writeback-extreme.env with the value of `$ORACLE_HOME/network/admin/` (please expand ORACLE\_HOME into a absolute path).
See example below
[writeback-extreme]
domain = 'localhost'
host = ':8899'
[writeback-extreme.env]
tns_admin = '/absolute/path/to/oracle/home/network/admin'
This exposes a TNS\_ADMIN environment variable to the background service of the application. Therefore the application/our oracle driver uses the TNS\_ADMIN to locate the '.ora' files.
### Docker
When running WriteBackExtreme in Docker, pass the variable prefixed with WBE like so:
WBE\_TNS\_ADMIN = /absolute/path/to/oracle/home/network/admin
---
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