checkSystemSchema(jarName, inSystem);
SQLJJar sqljJar = oldAIS.getSQLJJar(jarName);
if (sqljJar == null)
throw new NoSuchSQLJJarException(jarName);
if (!sqljJar.getRoutines().isEmpty())
throw new ReferencedSQLJJarException(sqljJar);
final AkibanInformationSchema newAIS = aisCloner.clone(oldAIS);
newAIS.removeSQLJJar(jarName);
if (inSystem) {
unStoredAISChange(session, newAIS);
}