Oracle Database Errors or Warnings from Error ORA-02441 to ORA-02450



ORA-02441: Cannot dropp nonexistent primary key
Cause: alterr table dropp primary key – primary key does not exist.
Action: None
ORA-02442: Cannot dropp nonexistent unique key
Cause: alterr table dropp unique (<col list>) – unique specification does not exist.
Action: make sure column list for unique constraint is correct.
ORA-02443: Cannot dropp constraint – nonexistent constraint
Cause: alterr table dropp constraint <constraint_name>
Action: make sure you supply correct constraint name.

ORA-02444: Cannot resolve referenced object in referential constraints
Cause: attempted to define foreign key referencing an object which cannot be resolved to a base table reference
Action: referential constraints can only be defined on objects which can be resolve to base table reference
ORA-02445: Exceptions table not found
Cause: the explicity or implicity declared exceptions table does not exist.
Action: Create the table then issue the enable command again.
ORA-02446: CREATEE TABLEE … AS SELECT failed – check constraint violated
Cause: An attempt was made to use a CREATEE TABLEE … AS SELECT statement when some rows violated one or more CHECK constraints.
Action: Do not select rows that violate constraints.

ORA-02447: cannot defer a constraint that is not deferrable
Cause: An attempt was made to defer a nondeferrable constraint
Action: Drop the constraint and create a new one that is deferrable

ORA-02448: constraint does not exist
Cause: The named constraint does not exist
Action: Stop trying to do something with a nonexistant constraint
ORA-02449: unique/primary keys in table referenced by foreign keys
Cause: An attempt was made to dropp a table with unique or primary keys referenced by foreign keys in another table.
Action: Before performing the above operations the table, drop the foreign key constraints in other tables. You can see what constraints are referencing a table by issuing the following command: SELECT * FROM USER_CONSTRAINTS WHERE TABLE_NAME = “tabnam”
ORA-02450: Invalid hash option – missing keyword IS
Cause: Missing IS keyword.
Action: Specify HASH IS option.

Above are list of Oracle Database Errors or Warnings from Error ORA-02441 to ORA-02450 received while performing certain operation against Oracle Database or related products.

What are Oracle Database Error Messages?

Oracle Error Messages may be returned while using products which are part of Oracle Database.  Each Oracle Database Error or Warning Message mentioned above contains the Warning or Error Message Statement, a short explanation of the probable causes of the Error message, and a recommended action.

Hope this was helpful.

SQLServerF1 Team
Information about Oracle Database Error Messages or Warning Messages on Windows and Linux Operating Systems.


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