Error
Error Code: ORA-30358

Oracle ORA-30358: Schema Mismatch

📦 Oracle Database
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Description

The ORA-30358 error indicates that a materialized view and its summary are located in different schemas within the Oracle database. This typically occurs during materialized view creation or refresh operations when the schemas are unintentionally mixed.
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Error Message

summary and materialized view are not in same schema
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Known Causes

4 known causes
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Incorrect Schema Specification
The CREATE MATERIALIZED VIEW statement explicitly specifies a different schema for the summary table than the materialized view itself.
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Schema Privilege Issues
The user attempting to create or refresh the materialized view lacks sufficient privileges to access or create objects in the intended summary schema.
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Default Schema Conflict
The user's default schema is different from the schema where the summary is intended to reside, leading to implicit schema resolution issues.
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Incorrect Object Ownership
The summary table and the materialized view are owned by different users and located in different schemas.
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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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