How to Recompile invalid objects in oracle

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In this article, we will cover how to recompile invalid objects in oracle database. If Oracle objects package, procedure, function, trigger and views become invalid when dependent object has changed. 

recompile invalid objects in oracle
recompile invalid objects in oracle

How to find invalid objects in oracle

Check how many invalid objects in oracle database.

SQL>select owner,object_name,status,object_type from dba_objects where status=’INVALID’;

SQL>select object_name,status from dba_objects where object_name like ‘JA%’ and status =’INVALID’;

Really! Do you know how to recompile invalid objects in oracle?

No worry! There are several methods for recompiling invalid schema objects.

Manual approach: – Manual approach suitable if you have small number of invalid schema objects.  Here we can see how to package body in oracle.

SQL>ALTER PACKAGE package_name COMPILE;

SQL>ALTER PACKAGE package_name COMPILE BODY;

SQL>ALTER PROCEDURE procedure_name COMPILE;

SQL>ALTER FUNCTION function_name COMPILE;

SQL>ALTER TRIGGER trigger_name COMPILE;

SQL>ALTER VIEW view_name COMPILE;

 

DBMS_DDL: –Another approach is DBMS_DDL package to recompile the invalid object.

EXEC DBMS_DDL.alter_compile(‘PACKAGE’, ‘SCHEMA_NAME’, ‘PACKAGE_NAME’);

EXEC DBMS_DDL.alter_compile(‘PACKAGE BODY’, ‘SCHEMA_NAME’, ‘PACKAGE_NAME’);

EXEC DBMS_DDL.alter_compile(‘PROCEDURE’, ‘SCHEMA_NAME’, ‘PROCEDURE_NAME’);

EXEC DBMS_DDL.alter_compile(‘FUNCTION’, ‘SCHEMA_NAME’, ‘FUNCTION_NAME’);

EXEC DBMS_DDL.alter_compile(‘TRIGGER’, ‘SCHEMA_NAME’, ‘TRIGGER_NAME’);

 
 
UTL_RECOMP :- UTL_RECOMP is useful after a major version upgrade that typically invalidates all PL/SQL objects.
 
 
— Schema level.
 
SQL>EXEC UTL_RECOMP.recomp_serial(‘APPS’);
SQL>EXEC UTL_RECOMP.recomp_parallel(4, ‘APPS’);
— Database level.
 
SQL>EXEC UTL_RECOMP.recomp_serial();
SQL>EXEC UTL_RECOMP.recomp_parallel(4);
— Using job_queue_processes value.
 
SQL>EXEC UTL_RECOMP.recomp_parallel();
SQL>EXEC UTL_RECOMP.recomp_parallel(NULL, ‘APPS’);
 
 
Here we can use dbms_utility.compile_schema example to compile schema’s objects.
 
 
DBMS_UTILITY.compile_schema:-The COMPILE_SCHEMA procedure in the DBMS_UTILITY package compiles all procedures, functions, packages, and triggers in the specified schema.
 
 
SQL>EXEC DBMS_UTILITY.compile_schema(schema => ‘SCOTT’, compile_all => false);
 
 
UTLRP.SQL: –As we know that oracle recommended utlrp.sql script to recompile all invalid objects.
 
 

How do I recompile all invalid objects?

Here we will use simple way to compile invalid objects in oracle 19c as well as 12c and so on. To run the utlrp.sql script start the Sql*Plus as below. 

utlrp.sql location: – $ORACLE_HOME/rdbms/admin/utlrp.sql

[oracle@**** ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Thu Sep 3 13:36:40 2020

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 – 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> @$ORACLE_HOME/rdbms/admin/utlrp.sql

TIMESTAMP

——————————————————————————–

COMP_TIMESTAMP UTLRP_BGN  2020-09-03 13:36:51

DOC>   The following PL/SQL block invokes UTL_RECOMP to recompile invalid

DOC>   objects in the database. Recompilation time is proportional to the

DOC>   number of invalid objects in the database, so this command may take

DOC>   a long time to execute on a database with a large number of invalid

DOC>   objects.

DOC>

DOC>   Use the following queries to track recompilation progress:

DOC>

DOC>   1. Query returning the number of invalid objects remaining. This

DOC>      number should decrease with time.

DOC>         SELECT COUNT(*) FROM obj$ WHERE status IN (4, 5, 6);

DOC>

DOC>   2. Query returning the number of objects compiled so far. This number

DOC>      should increase with time.

DOC>         SELECT COUNT(*) FROM UTL_RECOMP_COMPILED;

DOC>

DOC>   This script automatically chooses serial or parallel recompilation

DOC>   based on the number of CPUs available (parameter cpu_count) multiplied

DOC>   by the number of threads per CPU (parameter parallel_threads_per_cpu).

DOC>   On RAC, this number is added across all RAC nodes.

DOC>

DOC>   UTL_RECOMP uses DBMS_SCHEDULER to create jobs for parallel

DOC>   recompilation. Jobs are created without instance affinity so that they

DOC>   can migrate across RAC nodes. Use the following queries to verify

DOC>   whether UTL_RECOMP jobs are being created and run correctly:

DOC>

DOC>   1. Query showing jobs created by UTL_RECOMP

DOC>         SELECT job_name FROM dba_scheduler_jobs

DOC>            WHERE job_name like ‘UTL_RECOMP_SLAVE_%’;

DOC>

DOC>   2. Query showing UTL_RECOMP jobs that are running

DOC>         SELECT job_name FROM dba_scheduler_running_jobs

DOC>            WHERE job_name like ‘UTL_RECOMP_SLAVE_%’;

DOC>#

PL/SQL procedure successfully completed.

TIMESTAMP

——————————————————————————–

COMP_TIMESTAMP UTLRP_END  2020-09-03 13:37:13

DOC> The following query reports the number of objects that have compiled

DOC> with errors.

DOC>

DOC> If the number is higher than expected, please examine the error

DOC> messages reported with each object (using SHOW ERRORS) to see if they

DOC> point to system misconfiguration or resource constraints that must be

DOC> fixed before attempting to recompile these objects.

DOC>#

OBJECTS WITH ERRORS

——————-

                  0

DOC> The following query reports the number of errors caught during

DOC> recompilation. If this number is non-zero, please query the error

DOC> messages in the table UTL_RECOMP_ERRORS to see if any of these errors

DOC> are due to misconfiguration or resource constraints that must be

DOC> fixed before objects can compile successfully.

DOC>#

ERRORS DURING RECOMPILATION

—————————

                          0

Function created.

PL/SQL procedure successfully completed.

Function dropped.

…Database user “SYS”, database schema “APEX_040200”, user# “371” 13:37:20

…Compiled 0 out of 2994 objects considered, 0 failed compilation 13:37:21

…263 packages

…255 package bodies

…452 tables

…11 functions

…16 procedures

…3 sequences

…457 triggers

…1320 indexes

…207 views

…0 libraries

…6 types

…0 type bodies

…0 operators

…0 index types

…Begin key object existence check 13:37:21

…Completed key object existence check 13:37:21

…Setting DBMS Registry 13:37:21

…Setting DBMS Registry Complete 13:37:21

…Exiting validate 13:37:21

PL/SQL procedure successfully completed.

SQL>

 

Once you run the utlrp.sql script, oracle automatically recompile all invalid objects.
 
 

References:-

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