When to encounter an ora-00904 error message?

When you encounter an ORA-00904 error, the following error message will appear: You tried to execute a SQL statement that included an invalid column name or the column name is missing. This commonly occurs when you reference an invalid alias in a SELECT statement. The option (s) to resolve this Oracle error are:

Is there a way to remove the ora-00018 error?

To remove the ORA-00018 we want to increase the processes parameter and then bounce the instance. You should set the processes parameter to a very high value because it consumers very little resources and you do not want your instance to “lock up” with the ORA-0018 error.

How to resolve an oracle column name error?

The option (s) to resolve this Oracle error are: Rewrite your SQL to include a valid column name. To be a valid column name the following criteria must be met: The column name must begin with a letter. The column name can not be longer than 30 characters.

How to solve Oracle not available problem ora-01034?

To resolve ORA-01034, be sure that the ORACLE_HOME and ORACLE_SID properly match within the files /etc/oratab or /var/opt/oracle/oratab . As a last step in solving your ORA-01034 problem and running DBUA, make sure that ORACLE_HOME is set to ‘old’ home, not ‘new’ home.

Is there a warning condition for Oracle in DRDA?

Oracle, unlike DRDA (and DB2), has no notion of a warning condition. In Oracle, call execution is either successful or generates an error. For example, Oracle treats an overflow situation as an error, and does not continue.

What is the error code for Oracle error code?

Oracle Error Code SQLCODE SQLSTATE Error Code Description ORA-00001-803 23505 Unique constraint violation ORA-00900-104 or -199 42601 Invalid SQL statement ORA-00900-84 42616 Invalid SQL statement ORA-00901 or