CSV or EXCEL Interactive Report Download Fails when ORDS Deployed to WLS
(Doc ID 2128216.1)
Last updated on FEBRUARY 09, 2023
Applies to:
Oracle REST Data Services - Version 3.0.1 and laterOracle Application Express (APEX) - Version 4.2.6.00 and later
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.
Symptoms
1. Using the default mechanism to download an Interative Report (IR) from APEX in .CSV format:
2. ORDS 3.0.4 is deployed in WLS 12.1 and front ended by Oracle HTTP Server (OHS).
3. For extremely large IR downloads - some as large as 500,000 rows - the download fails.
4. OHS error thrown is: "Failure of Apache Bridge"
5. WLS logs show Error 503 at the 2 hour mark and indications of stuck threads
6. This failure did not occur with OHS using DAD configuration.
7. Download are slow with ORDS 3.0.4 in Standalone mode but download is eventually successful.
8. Various JDBC timeout related settings per the ORDS Blog have been tried with no success.
9. The issue does not happen with HTML download format.
Changes
Moved from Oracle HTTP Server (OHS) to ORDS 3.0.4 deployed on WLS 12.1.
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |