Oracle Grafana Config

As a DevOps Engineer, I require assistance in creating a shell script that generates output in InfluxDB line protocol format. This script will be integrated into my telegraf.conf configuration file, and I am using Mimir as middleware. The script should comprehensively cover all relevant Oracle database metrics, from basic to advanced levels, for an on-premises setup. Additionally, please ensure that the script handles any potential issues related to the use of the '$' character while querying the Oracle database. 

**Output Requirements:** 
- The script must output data in InfluxDB line protocol format. 
- Include comments in the script for clarity. 
- Handle errors gracefully and log any issues encountered.

**Example Metrics to Cover:** 
- CPU usage 
- Memory statistics 
- Disk I/O 
- Active sessions 

Please provide the complete shell script with detailed instructions on how to integrate it into telegraf.conf.