@SivaK17078241  

To manually install UDFs for Pega 718 on DB2 and Oracle, follow these steps:

1. Run this query: SELECT dbms_java.longname(object_name) FROM all_objects WHERE status!='VALID' AND object_type LIKE 'JAVA%'; Check if the class ‘com/pega/pegarules/data/udf/directstreamreader/DirectStreamReader’ is listed here or not.
2. Check if the below functions exist or not: pegarules/data/udf/directstreamreader/CachedDirectStream and com/pega/pegarules/data/udf/directstreamreader/BasicEnvironmentAdapter.
3. If the Java classes are installed and they are in an invalid state, Oracle validates them the first time you use them. You can use the UDFs for the first time to see if Oracle automatically validates them.
4. If the query fails with an ORA-29541 error, you need to force Oracle to revalidate UDFs. To do this, run the following command for each Java class that is in an invalid state: ALTER JAVA CLASS \"com/pega/pegarules/data/internal/clipboard/directstream/ByteArrayUtil\" RESOLVER ((vXYRULES)( public)) RESOLVE;
5. If the query results are successful, but the Java classes still show as invalid, you need to force Oracle to revalidate UDFs.
6.  

Please note that it's not advised to use UDFs in a production environment.

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