Reason code 00C90084 indicates a problem with temporary file space availability in your DB2 system. This error usually appears alongside SQLCODE -904, which means "Unsuccessful execution caused by an unavailable resource."
This error occurs when your DB2 system tries to create a temporary file for processing a query, but there is not enough space in any of the work file tablespaces.
Here are common scenarios leading to this error:
- Large Queries: Complex or large queries with many rows can require a significant amount of temporary space to process the data efficiently.
- High Transaction Volume: Running many concurrent transactions can exhaust the available temporary file space.
- Insufficient Table Space: Your DB2 system may be configured with insufficient work file tablespaces for your workload, making it vulnerable to space constraints.
Here are potential solutions:
- Increase Work File Table Space: Allocate more space to your work file tablespaces to accommodate the processing needs of your queries and transactions.
- Optimize Queries: Review and optimize your queries to minimize the temporary space required.
- Adjust Transaction Volume: If possible, reduce the number of concurrent transactions running on the DB2 system.
- Increase Page Size: Consider increasing the page size of your work file tablespaces to potentially reduce the number of pages needed for temporary files.
Remember: Consult with your DB2 administrator or refer to IBM documentation for specific guidance tailored to your environment.
