Runtime components : Core components : CHA : Reference : CHAInstance database schema
  
CHAInstance database schema
The CHAInstance table uses the following database schema for DB2® to store information about CHAInstance Entity EJBs:
CHAInstance database schema
 
Column name
Column type
Max length
Primary key?
Usage
PARENTID
VARCHAR
128
NO
Used for CHA Instance EJB chaining function. This column is used to track the instance ID of the parent instance to which this CHA Instance is chained as a child.
INSTANCEID
VARCHAR
128
YES
Unique ID for this CHA Instance. These must be unique within the DB2® table and cannot be repeated.
NAME
VARCHAR
80
NO
The name of the Context being wrapped by the CHA instance. Used for By Name queries.
ISROOT
SMALLINT
2
NO
Indicator field populated if CHA Instance is the Root Context, null if not.
CONTEXT
LONG VARCHAR (binary) or BLOB
Unbound
NO
This is the physical Context instance wrapped by a given CHA Instance.
TYPENAME
VARCHAR
80
NO
Type name assigned to the Context. Used for By Type queries.
Note CHAInstance CMP will only be called in CHA server side by CHASession Session Bean. So there is only local EJB interface for CHAInstance CMP.
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