![]() You must force compilation and resolution yourself only if you are developing and you want to find problems early. The dependency system enables you to rely on Oracle Database to manage dependencies between classes, to recompile, and to resolve automatically. Note that classes can be recompiled only if the source file is present on the server. Before you use any of these classes again, Oracle Database attempts to resolve them and recompile, if necessary. If you change the definition of class A by adding a new field to it, then the dependency mechanism in Oracle Database flags classes B and C as invalid. In the preceding example, you can see that classes A, B, and C depend on one another, because A holds an instance of B, B holds an instance of C, and C holds an instance of A. The system tracks dependencies at a class level of granularity. Consider the following example: public class A Oracle Database provides a dependency management and automatic build facility that transparently recompiles source programs when you make changes to the source or binary programs upon which they depend. The packages and classes are compiled with online=false.Īll other packages and classes match the empty string entry and are compiled with online=true. The name a.b matches class and package names beginning with a.b. The packages and classes are compiled with online=true. The name a.b.c.d matches class and package names beginning with a.b.c.d. The online option shown in the table matches schema object names as follows: Because the table has no entry for the encoding option, the compiler uses the default or the value specified on the command line. The schema name with a higher resolution for the pattern match is the entry that applies. The pattern match rule is to match as much of the schema name against the table entry as possible. The following table represents a hypothetical JAVA$OPTIONS database table. SQL> execute dbms_t_compiler_option('x.y', 'online', 'false') The procedure will create the table, if it does not exist. To create a JAVA$OPTIONS table, use the t_compiler_option procedure from the DBMS_JAVA package to set a value. You will then also need to load those.Initially, a schema does not have a JAVA$OPTIONS table. Of course those EBS classes may have dependencies on other EBS or third-party classes. Or you can also use the DBMS_JAVA package, specifically the LOADJAVA() method. You can do that using the loadjava command line tool, which lets you load entire jar files into your database. So you then need to load those classes in your database. SQL> select owner, count(*) from all_java_classes group by owner order by owner īut it is unlikely that the EBS-specific classes you want to invoke are there. You will find that it has already 10's of thousands of classes loaded. The JVM embedded in your Oracle database only allows you to access java classes loaded inside that database: accessing external classes (from OS files) is not allowed.įirst you need to find out what java classes are already loaded in your database by reading dictionary view ALL_JAVA_CLASSES. ![]() The question is have is, how do I set the classpath for the database (either permanently or for the session) so that it can access this method? Alternatively, is there a query to determine what the classpath is so that I can copy the classes to the proper location in the operating system? L know for a fact that this class exists at /u01/install/APPS/fs1/EBSapps/comn/java/classes/path/to/classname.class. ![]() ORA-29540: class path/to/classname does not exist ![]() Select methodname('foo', 'bar') FROM DUAL SQL> select methodname('foo', 'bar') FROM DUAL However when I attempt to call it, I get the following error. SQL> create or replace function methodname(foo in varchar2, bar in varchar2) With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production On my test server I define a function: java_test]$ sqlplus Release 10.1.0.5.0 - Production on Tue May 21 10:21:24 2019Ĭopyright (c) 1982, 2005, Oracle. ![]() L am trying to make use of some proprietary Oracle Java classes/methods using an Oracle provided virtual machine (E-Business Suite Vision, Oracle 12.2.28) ![]()
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