multiconsumer Queue with an Oracle Type from Java

You have a multi consumer queue with a user defined type CREATE TYPE topic_message AS OBJECT(Subject VARCHAR2(30),Text VARCHAR2(80)) / BEGIN dbms_aqadm.create_queue_table( ‘topic_queue_table’, ‘topic_message’, Multiple_consumers=>TRUE); dbms_aqadm.create_queue( ‘toy_topic’, ‘topic_queue_table’); dbms_aqadm.start_queue( ‘toy_topic’); END; / You create the corresponding java class with JPublisher (check the documentation of Database JPublisher User’s Guide 12c Release 1 (12.1) from which I took […]

strings larger than 4000 in 12c

Back in Oracle 7, the maximum length for VARCHAR2 was 2000. In 11gR2, it is still 4000 for varchar2/char columns and for literals. Any attempt to use something larger will produce an infamous ora-910, ora-1704 or ora-1489 error. SQL> create table t(x varchar2(5000)); create table t(x varchar2(5000)) * ERROR at line 1: ORA-00910: specified length […]

Advanced Queuing hello world

First for those who are looking for the difference between Queuing, Advanced Queuing (AQ) and Streams Advanced Queuing, there is none. There is no Beginner Queuing and Advanced Queuing was renamed to Streams advanced queuing when streams was popular and renamed back to Advanced Queuing was streams was deprecated. I am the provider, I give […]

Change background of Oracle Entreprise Manager

If you have more than one OEM and want a red status bar in your production OEM, here the proceedings Stop your cloud control emctl stop oms -all Unzip the $MW/oracle_common/modules/oracle.adf.view_11.1.1/adf-richclient-impl-11.jar in a new directory $MW/jdk16/jdk/bin/jar -xvf $MW/oracle_common/modules/oracle.adf.view_11.1.1/adf-richclient-impl-11.jar edit the picture dbd_topShadow.png (for instance) in adf/images/fusion- and copy it to META-INF/adf/images/fusion- with your favorite picture […]