The SYSCS_UTIL.SYSCS_GET_XPLAIN_MODE function returns the current xplain mode.
If the xplain mode is non-zero, then statements are not actually executed, but are just compiled, and their statistics recorded in the SYSXPLAIN_* database tables. If the xplain mode is zero (the default), then statements are executed normally.
See "Working with RunTimeStatistics" in the Tuning Java DB for additional information.
SYSCS_UTIL.SYSCS_GET_XPLAIN_MODE() RETURNS INTEGER
To determine the current value of the XPLAIN mode: