Error
Error Code: ORA-30354

Oracle ORA-30354: SYS Relation Rewrite

📦 Oracle Database
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Description

The ORA-30354 error occurs when a materialized view with query rewrite enabled attempts to reference a SYS relation (table or view) in its SELECT clause. This is not permitted by Oracle's query rewrite mechanism for security and stability reasons.
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Error Message

ORA-30354: Query rewrite not allowed on SYS relations
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Known Causes

2 known causes
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SYS Relation Reference
A materialized view's SELECT statement directly references a table or view owned by the SYS schema.
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Query Rewrite Enabled
The materialized view was created or altered with the `REWRITE` option enabled, triggering the rewrite validation.
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Solutions

Coming Soon

Detailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:

General Troubleshooting Tips

  • Check the error message carefully for specific details
  • Review recent changes that might have caused the error
  • Search for the exact error code in the official documentation
  • Check log files for additional context
  • Try restarting the application or service

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