Enotebook : While retrieving waiting documents, error opening database connection" After Oracle SID Change

When switching between user folders in E-Notebook Enterprise, users may encounter the error message "While retrieving waiting documents, error opening database connection" after changing the Oracle database SID name. This typically occurs during database migrations, version changes, or when switching between Oracle editions.

Environment:
- E-Notebook Enterprise
- Oracle database
- Scenarios involving database SID name changes

Symptoms:
- Error message "While retrieving waiting documents, error opening database connection" appears when switching between user folders
- Connection issues between E-Notebook and the Oracle database
- Problems may occur after database migration or Oracle edition changes

Root Cause:
The issue occurs when the Oracle database SID name is changed, but not all E-Notebook configuration files are updated to reflect this change. Specifically, while TNSNames.ora might be updated, the OracleConfig.xml file often gets overlooked during the migration process.

Solution:
1. Locate and open the OracleConfig.xml file (typically found in the E-Notebook installation directory)
2. Update the database SID name in the OracleConfig.xml file to match the new SID name
3. If using CsDocStore, recreate the certificates and re-run the CsDocStoreSetup.exe utility
4. Restart the E-Notebook services after making these changes

Additional Notes:
- Always ensure that all configuration files are updated when changing database connection details
- Key files to update include:
 - TNSNames.ora
 - OracleConfig.xml
 - Any other application configuration files referencing the database SID
- After making changes, verify connectivity by testing user folder navigation