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Extending HCL OneDB™Beyond standard relational database objects, HCL OneDB™ can be extended to handle specialized data types, access methods, routines, and other objects. HCL OneDB™ includes many built-in extensions that are fully integrated in the database server. HCL OneDB™ also provides DataBlade® modules, which are packages of extended database objects for a particular purpose and that are installed separately from the database server. Alternatively, you can create your own user-defined objects for HCL OneDB™.
HCL OneDB™ extensions and DataBlade® modulesThese topics describe how to use built-in database extensions and separately installed DataBlade® modules.
Database Extensions User's GuideThe HCL OneDB™ Database Extensions User's Guide explains how to use the database extensions that come with HCL OneDB™: Large Object Locator, MQ messaging, binary data types, basic text search, node data type, HCL OneDB™ web feature service for Geospatial Data, and SQL packages.
SQL Packages ExtensionThe SQL packages extension provides SPL routines that you can use in an application that is compatible with database servers other than HCL OneDB™.
DBMS_ALERT packageThe DBMS_ALERT package provides a set of procedures for registering for alerts, sending alerts, and receiving alerts.
SIGNAL procedureThe SIGNAL procedure signals the occurrence of a specified alert. The signal includes a message that is passed with the alert. The message is distributed to the listeners (processes that have registered for the alert) when the SIGNAL call is issued.

SIGNAL procedure

The SIGNAL procedure signals the occurrence of a specified alert. The signal includes a message that is passed with the alert. The message is distributed to the listeners (processes that have registered for the alert) when the SIGNAL call is issued.

Syntax

Procedure parameters

name: An input argument of type VARCHAR(128) that specifies the name of the alert.
message: An input argument of type VARCHAR(32672) that specifies the information to pass with this alert. This message can be returned by the WAITANY or WAITONE procedures when an alert occurs.