DB2 ⭐ Featured
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Q: How to handle -551 SQLCODE?

Answer:
-551 is authorization failure. No privilege for operation. Check GRANT statements. May need SELECT, UPDATE, DELETE, INSERT authority. GRANT privilege ON object TO user/role. Check SYSIBM.SYSTABAUTH.
sqlcode -551 authorization
DB2 ⭐ Featured
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Q: What is DB2 catalog?

Answer:
Catalog tables describe DB2 objects. SYSIBM.SYSTABLES for tables, SYSIBM.SYSCOLUMNS for columns, SYSIBM.SYSINDEXES for indexes. Query catalog for metadata. Read-only except through DDL. Essential for documentation and analysis.
catalog sysibm metadata