Database Topics

Database Topics

ORA-00925: missing INTO keyword

SQL Error: ORA-00925: missing INTO keyword error occurs when the INTO keyword is missing from the insert statement. The INTO keyword specifies the name of the table into which the data will be stored. Along with the INSERT keyword, the

ORA-00926: missing VALUES keyword

SQL Problem: ORA-00926: missing VALUES keyword error occurs when the VALUES clause in the insert statement is missing. The VALUES keyword identifies the VALUES clause. The VALUES clause specifies the values to be stored in the table. If the VALUES

ORA-00927: missing equal sign

ORA-00927: missing equal sign error occurs when the equal sign is missing in the expression in the sql query’s WHERE clause or SET clause. The equal sign is used to assign a value. In the SET clause, the equal sign

ORA-12154: TNS:could not resolve service name

ORA-12154: TNS:could not resolve service name error occurs when the connect identifier used to connect to a database or other database service could not be resolved into a connect descriptor using one of the naming methods configured. This issue might be

ORA-22818: subquery expressions not allowed here

ORA-22818: subquery expressions not allowed here error occurs when a subquery is found in a sql query where the subquery is not supported. Subqueries are not supported in various clauses, such as GROUP BY, MATERIALIZED VIEW, and so on. If

ORA-00942: table or view does not exist

ORA-00942: table or view does not exist oracle error indicates that you are trying to run a SQL query that refers to a table or view that does not exist. The Referencing table or view does not exist or attempting

ORA-00955: name is already used by an existing object

ORA-00955: name is already used by an existing object error occurs while creating a table, view, index, sequence, synonym, types, constraints or other object with a name that already exists in the database. A database object with the same name

ORA-02289: sequence does not exist

ORA-02289: sequence does not exist error occurs when a sequence is called that does not exist in the database or when the user does not have the necessary permissions to execute it. The sequence is either not created or removed

ORA-08002: sequence MYSEQUENCE.CURRVAL is not yet defined in this session

ORA-08002: sequence MYSEQUENCE.CURRVAL is not yet defined in this session error occurs when you try to call the CURRVAL of a sequence before calling the NEXTVAL of the sequence in the session. After you’ve created a sequence, you should call

ORA-08004: sequence MYSEQUENCE.NEXTVAL exceeds MAXVALUE and cannot be instantiated

ORA-08004: sequence MYSEQUENCE.NEXTVAL exceeds MAXVALUE and cannot be instantiated error occurs if the sequence next value is greater than the sequence maximum value. The sequence’s NEXTVAL increases the next value and assigns it to the current value. If the sequence’s

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