SYSCS_DIAG.STATEMENT_CACHE diagnostic table

The SYSCS_DIAG.STATEMENT_CACHE diagnostic table shows the contents of the SQL statement cache.

You can reference the SYSCS_DIAG.STATEMENT_CACHE diagnostic table directly in a statement. For example:

SELECT * FROM SYSCS_DIAG.STATEMENT_CACHE

For a database for which authentication and SQL authorization are both enabled, only the database owner can access this diagnostic table. See "Configuring user authentication" and "Configuring user authorization" in the Derby Security Guide for more information.

The table has the columns shown in the following table.

Table 1. Columns in the SYSCS_DIAG.STATEMENT_CACHE table
Column Name	Type	Length	Nullable	Contents
ID	CHAR	36	false	The internal identifier of the compiled statement.
SCHEMANAME	VARCHAR	128	true	The schema the statement was compiled in.
SQL_TEXT	VARCHAR	32,672	false	The text of the statement.
UNICODE	BOOLEAN	1	false	Always true
VALID	BOOLEAN	1	false	true (the statement is currently valid) false (the statement is not currently valid)
COMPILED_AT	TIMESTAMP	29	true	The time the statement was compiled. Requires statistics timing to be enabled (see SYSCS_UTIL.SYSCS_SET_STATISTICS_TIMING system procedure).