6.104 DBA_IM_EXPRESSIONS

DBA_IM_EXPRESSIONS provides information about the list of expressions (SYS_IME virtual columns) that are currently enabled for in-memory storage.

Related View

Typically, you can query this view after invoking the DBMS_INMEMORY_ADMIN.IME_CAPTURE_EXPRESSIONS PL/SQL procedure to see the list of hot expressions added to different tables across the database.

Based on this view, you can:

  • Populate expressions on a particular table immediately

  • Drop certain expressions that are marked for in-memory but not desired by users

USER_IM_EXPRESSIONS provides information about the list of expressions (SYS_IME virtual columns) that are currently enabled for in-memory storage in schemas owned by the current user. This view does not display the OWNER column.

Column Datatype NULL Description

OWNER

VARCHAR2(129)

Table owner

TABLE_NAME

VARCHAR2(129)

Table name

OBJECT_NUMBER

NUMBER

Object number of the table

COLUMN_NAME

VARCHAR2(128)

NOT NULL

Column name of the expression added to the table (with SYS_IME prefix)

SQL_EXPRESSION

LONG

SQL representation of the expression

See Also:

"USER_IM_EXPRESSIONS"