Display Sql Error Oracle
Contents |
Churchill Run-time errors arise from design faults, coding mistakes, hardware failures, and many other sources. Although you cannot anticipate all possible errors, you can plan to handle certain kinds of errors meaningful to your oracle sqlerror PL/SQL program. With many programming languages, unless you disable error checking, a run-time error oracle sql error codes such as stack overflow or division by zero stops normal processing and returns control to the operating system. With PL/SQL, a oracle sql error message mechanism called exception handling lets you "bulletproof" your program so that it can continue operating in the presence of errors. This chapter discusses the following topics: Overview of PL/SQL Error Handling Advantages of PL/SQL Exceptions oracle sqlcode Predefined PL/SQL Exceptions Defining Your Own PL/SQL Exceptions How PL/SQL Exceptions Are Raised How PL/SQL Exceptions Propagate Reraising a PL/SQL Exception Handling Raised PL/SQL Exceptions Tips for Handling PL/SQL Errors Overview of PL/SQL Error Handling In PL/SQL, a warning or error condition is called an exception. Exceptions can be internally defined (by the run-time system) or user defined. Examples of internally defined exceptions include division by zero and out of memory.
Oracle Sqlplus Error Handling
Some common internal exceptions have predefined names, such as ZERO_DIVIDE and STORAGE_ERROR. The other internal exceptions can be given names. You can define exceptions of your own in the declarative part of any PL/SQL block, subprogram, or package. For example, you might define an exception named insufficient_funds to flag overdrawn bank accounts. Unlike internal exceptions, user-defined exceptions must be given names. When an error occurs, an exception is raised. That is, normal execution stops and control transfers to the exception-handling part of your PL/SQL block or subprogram. Internal exceptions are raised implicitly (automatically) by the run-time system. User-defined exceptions must be raised explicitly by RAISE statements, which can also raise predefined exceptions. To handle raised exceptions, you write separate routines called exception handlers. After an exception handler runs, the current block stops executing and the enclosing block resumes with the next statement. If there is no enclosing block, control returns to the host environment. In the example below, you calculate and store a price-to-earnings ratio for a company with ticker symbol XYZ. If the company has zero earnings, the predefined exception ZERO_DIVIDE is raised. This stops normal execution of the block and transfers control to the exception handlers. The optional OTHERS handler catches all exceptions that the block does not na
to your PL/SQL program. With many programming languages, unless you disable error checking, a run-time error such as stack overflow or division by
Oracle Sqlerrm
zero stops normal processing and returns control to the operating system. With oracle sql error 942 PL/SQL, a mechanism called exception handling lets you bulletproof your program so that it can continue operating oracle sql error ora-65096 invalid common user or role name in the presence of errors. This chapter contains these topics: Overview of PL/SQL Runtime Error Handling Advantages of PL/SQL Exceptions Summary of Predefined PL/SQL Exceptions Defining Your Own PL/SQL https://docs.oracle.com/cd/B10500_01/appdev.920/a96624/07_errs.htm Exceptions How PL/SQL Exceptions Are Raised How PL/SQL Exceptions Propagate Reraising a PL/SQL Exception Handling Raised PL/SQL Exceptions Overview of PL/SQL Compile-Time Warnings Overview of PL/SQL Runtime Error Handling In PL/SQL, an error condition is called an exception. Exceptions can be internally defined (by the runtime system) or user defined. Examples of internally defined exceptions include division by http://docs.oracle.com/cd/B19306_01/appdev.102/b14261/errors.htm zero and out of memory. Some common internal exceptions have predefined names, such as ZERO_DIVIDE and STORAGE_ERROR. The other internal exceptions can be given names. You can define exceptions of your own in the declarative part of any PL/SQL block, subprogram, or package. For example, you might define an exception named insufficient_funds to flag overdrawn bank accounts. Unlike internal exceptions, user-defined exceptions must be given names. When an error occurs, an exception is raised. That is, normal execution stops and control transfers to the exception-handling part of your PL/SQL block or subprogram. Internal exceptions are raised implicitly (automatically) by the run-time system. User-defined exceptions must be raised explicitly by RAISE statements, which can also raise predefined exceptions. To handle raised exceptions, you write separate routines called exception handlers. After an exception handler runs, the current block stops executing and the enclosing block resumes with the next statement. If there is no enclosing block, control returns to the host environment. For information on managing errors when using BULK COLLECT, see "Handling FORALL Exceptions wi
are called exceptions. Note: The language of warning and error messages depends https://docs.oracle.com/cloud/latest/db112/LNPLS/errors.htm on the NLS_LANGUAGE parameter. For information about this parameter, see Oracle Database Globalization Support Guide. Topics Compile-Time Warnings Overview of Exception Handling Internally Defined Exceptions Predefined http://www.java2s.com/Tutorial/Oracle/0480__PL-SQL-Programming/Errormessagecodeandtext.htm Exceptions User-Defined Exceptions Redeclared Predefined Exceptions Raising Exceptions Explicitly Exception Propagation Unhandled Exceptions Error Code and Error Message Retrieval Continuing Execution After Handling Exceptions Retrying oracle sql Transactions After Handling Exceptions See Also: "Exception Handling in Triggers" "Handling FORALL Exceptions After FORALL Statement Completes" Tip: If you have problems creating or running PL/SQL code, check the Oracle Database trace files. The USER_DUMP_DEST initialization parameter specifies the current location of the trace files. You can find the value of oracle sql error this parameter by issuing SHOW PARAMETER USER_DUMP_DEST. For more information about trace files, see Oracle Database Performance Tuning Guide. Compile-Time Warnings While compiling stored PL/SQL units, the PL/SQL compiler generates warnings for conditions that are not serious enough to cause errors and prevent compilation—for example, using a deprecated PL/SQL feature. To see warnings (and errors) generated during compilation, either query the static data dictionary view *_ERRORS (described in Oracle Database Reference) or, in the SQL*Plus environment, use the command SHOW ERRORS. The message code of a PL/SQL warning has the form PLW-nnnnn. For the message codes of all PL/SQL warnings, see Oracle Database Error Messages. Table 11-1 summarizes the categories of warnings. Table 11-1 Compile-Time Warning Categories Category Description Example SEVERE Condition might cause unexpected action or wrong results. Aliasing problems with parameters PERFORMANCE Condition might cause performance problems. Passing a VARCHAR2 value to a NUMBER column in an INSERT statement INFORM
FunctionsRegular Expressions FunctionsStatistical FunctionsLinear Regression FunctionsPL SQL Data TypesPL SQL StatementsPL SQL OperatorsPL SQL ProgrammingCursorCollectionsFunction Procedure PackagesTriggerSQL PLUS Session EnvironmentSystem Tables Data DictionarySystem PackagesObject OrientedXMLLarge ObjectsTransactionUser PrivilegeError message code and text : Handle Exception«PL SQL Programming«Oracle PL/SQL TutorialOracle PL/SQL TutorialPL SQL ProgrammingHandle ExceptionSQL> DECLARE 2 e_TooManyEmployee EXCEPTION; -- Exception to indicate an error condition 3 v_ErrorCode NUMBER; -- Variable to hold the error message code 4 v_ErrorText VARCHAR2(200); -- Variable to hold the error message text 5 6 BEGIN 7 RAISE e_TooManyEmployee; 8 EXCEPTION 9 WHEN e_TooManyEmployee THEN 10 DBMS_OUTPUT.put_line('e_TooManyEmployee'); 11 v_ErrorText := SUBSTR(SQLERRM, 1, 200); -- Note the use of SUBSTR here. 12 DBMS_OUTPUT.put_line(v_ErrorText); 13 /* SQLERRM(0) */ 14 v_ErrorText := SUBSTR(SQLERRM(0), 1, 200); 15 DBMS_OUTPUT.put_line(v_ErrorText); 16 17 /* SQLERRM(100) */ 18 v_ErrorText := SUBSTR(SQLERRM(100), 1, 200); 19 DBMS_OUTPUT.put_line(v_ErrorText); 20 21 /* SQLERRM(10) */ 22 v_ErrorText := SUBSTR(SQLERRM(10), 1, 200); 23 DBMS_OUTPUT.put_line(v_ErrorText); 24 25 /* SQLERRM with no argument */ 26 v_ErrorText := SUBSTR(SQLERRM, 1, 200); 27 DBMS_OUTPUT.put_line(v_ErrorText); 28 29 /* SQLERRM(-1) */ 30 v_ErrorText := SUBSTR(SQLERRM(-1), 1, 200); 31 DBMS_OUTPUT.put_line(v_ErrorText); 32 33 /* SQLERRM(-54) */ 34 v_ErrorText := SUBSTR(SQLERRM(-54), 1, 200); 35 DBMS_OUTPUT.put_line(v_ErrorText); 36 37 38 WHEN OTHERS THEN 39 v_ErrorCode := SQLCODE; 40 END; 41 / e_TooManyEmployee User-Defined Exception ORA-0000: normal, successful completion ORA-01403: no data found -10: non-ORACLE exception User-Defined Exception ORA-00001: unique constraint (.) violated ORA-00054: resource busy and acquire with NOWAIT specified PL/SQL procedure successfully completed. SQL> 24.15.Handle Exception24.15.1.Code with No Exception Handler24.15.2.Code with Conditional Control to Avoid an Exception24.15.3.Code with Explicit Handler for Predefined Exception24.15.4.Handling an Unnamed Exception24.15.5.Handling a custom exception24.15.6.An example showing continuing program execution after handling exception24.15.7.The OTHERS Exception Handler24.15.8.Assigning a Name to Predefined Exception Code24.15.9.Using SQLCODE for error code and SQLERRM for error message24.15.10.Catch custom exception24.15.11.Handling exceptions