Other Issues

Other Issues

How to limit the number of rows returned by a Query in Oracle

There are two approaches to limit the number of rows returned by an Oracle query. Using the rownum value to limit the number of rows, as well as the OFFSET and FETCH keywords to limit the number of rows. The row limiting clause is supported in Oracle queries beginning with

Get a List of all Tables In Oracle

To get a list of all tables in Oracle, use data dictionary views to query. To get a list of all tables in an Oracle database, utilize data dictionary views such as tab, user tables, all tables, and dab tables. The queries listed below are equivalent to the “show tables”

PLS-00103: Encountered the symbol “END” when expecting one of the following

The PLS-00103: Encountered the symbol “END” when expecting one of the following: error occurs when the keyword “END” is encountered when the PL/SQL code is expected to have a valid literal value. When oracle scans the PL/SQL code while compiling, it detects the “END” symbol instead of the literal one.

PLS-00103: Encountered the symbol “BEGIN” when expecting one of the following

The PLS-00103: Encountered the symbol “BEGIN” when expecting one of the following: error occurs when the keyword “BEGIN” is encountered due to an error just before BEGIN keyword. When Oracle compiles PL/SQL code, it detects the “BEGIN” symbol rather than the literal one. The error usually appears just before the

PLS-00103: Encountered the symbol “end-of-file” when expecting one of the following:

The error PLS-00103: Encountered the symbol “end-of-file” when expecting one of the following occurs when oracle encounters the end of file while the PL/SQL code is expected to have a valid literal value. When oracle scans the PL/SQL code while compiling, it detects the end of file character instead of

PLS-00308: this construct is not allowed as the origin of an assignment

The PLS-00308: this construct is not allowed as the origin of an assignment error occurs when an index is used to change the value of a variable on which indexing is not permitted. If a variable is declared with a datatype and the variable is accessed as a list such

PLS-00222: no function with name exists in this scope

The PLS-00222: no function with name exists in this scope oracle error occurs occurs when an index is used to change the value of a variable on which indexing is not permitted. If a variable is declared with a datatype and then accessed as a list, such as sort, cursor,

PLS-00320: the declaration of the type of this expression is incomplete or malformed

The PLS-00320: the declaration of the type of this expression is incomplete or malformed error occurs when a variable declaration is missing, incomplete, malformed, or incorrect, or when it throws an error in oracle PL/SQL declaration. When a variable is declared using database objects such as sort, cursor, table, and

PLS-00302: component must be declared

The PLS-00302: component must be declared error occurs when the component of an object is used in the PL/SQL code but not declared in the oracle database object. The data base objects such as type, package, table, cursor may contain member components. If the components are not declared in the

ORA-06550: line n column m

The ORA-06550: line n column m error happens as part of another exception stack, which displays the line and column numbers where the error happened in the oracle PL/SQL code. The exception to this is not caused by the error. A stack of unhandled exceptions in the PLSQL code causes

PLS-00201: identifier must be declared

The PLS-00201: identifier must be declared error happens when the identifier is used without being declared in the PL/SQL code. Oracle Variables and other identifiers must either be declared or made available before they’ve been used. The variable is used in the code, but it isn’t declared in the database

DBMS_OUTPUT.PUT_LINE not printing

DBMS_OUTPUT.PUT_LINE not printing – The dbms_output.put_line command is used to print the output of PL/SQL code in the console window in oracle sql developer and sql plus. The dbms_output.put_line command will not be working or printing in the sql developer or sqlpqus console window by default. The PL/SQL code execute

ORA-06530: Reference to uninitialized composite

The ORA-06530: Reference to uninitialized composite error occurs when an object, LOB, or other composite was referenced as a left hand side without having been initialized. When a reference to an uninitialised object, LOB or composite is used to assign or access a value, the error ORA-06530: Reference to uninitialized

ORA-06512: at line n error

The error ORA-06512: at line occurs as part of another exception stack that shows the line number where the exception occurred. The error is not the cause of the exception to this. This error is caused by a stack of unhandled exceptions in the PLSQL code. This error ORA-06512: at line

ORA-06502: PL/SQL: numeric or value error

The ORA-06502: PL/SQL: numeric or value error occurs when the not null variable is assigned with a null value. The numeric not null variable should assign with a number. If the variable is assigned with a variable that contains a null value, the error ORA-06502: PL/SQL: numeric or value error