DBCHQE is called by a CLIv2 application to obtain information about its execution environment.
- 202 - CLIv2 does not support the query item
- 359 - Database version does not support the requested information
- 365 - TDP version does not support the requested information
- 451 - TDP does not support the query item
For queries that return collections of items (Aggregate-support-list, CLIv2-limits, SQL-limits, Procedure-data, Utility-session, Build-information, and Integrated-LOB), these applications should also allow for downlevel versions of CLIv2 by ensuring that items of interest are present by checking the returned length (QEPRALEN).