Compilation errors

Compilation errors

PL/SQL is a procedural language designed specifically for the Oracle database management system. Like any programming language, PL/SQL code must be compiled before it can be executed. During the compilation process, the compiler checks the syntax and semantics of the code to ensure that it follows the rules of the language.

Compilation errors occur when the compiler encounters code that does not conform to the rules of the language. These errors can occur for a variety of reasons, such as misspelled identifiers, incorrect syntax, or referencing an object that does not exist.

Some common types of compilation errors in PL/SQL include:

1. Syntax errors: These occur when the code does not follow the correct syntax of the language. This can include missing or mismatched parentheses, missing semicolons, or incorrect keywords.
2. Semantic errors: These occur when the code is syntactically correct, but violates the rules of the language. For example, trying to insert a null value into a non-nullable column.
3. Identifier errors: These occur when an identifier (such as a variable or table name) is misspelled or does not exist in the database.

When compilation errors occur, the compiler will display error messages that provide information about the specific error and its location in the code. These error messages can be used to correct the errors and recompile the code.

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