create table t1 (a int key, b int unique, c int) engine ndb; ERROR HY000: Can't create table 't1' show warnings; Level Code Message Warning 1296 Got error 299 'Operation not allowed or aborted due to single user mode' from NDB Error 1005 Can't create table 't1' CREATE LOGFILE GROUP lg1 ADD UNDOFILE 'undofile.dat' INITIAL_SIZE 16M UNDO_BUFFER_SIZE = 1M ENGINE=NDB; ERROR HY000: Failed to create LOGFILE GROUP show warnings; Level Code Message Warning 1296 Got error 299 'Operation not allowed or aborted due to single user mode' from NDB Warning 1296 Failed to create logfile group 'lg1' in NDB Error 1528 Failed to create LOGFILE GROUP create table t1 (a int key, b int unique, c int) engine ndb; CREATE LOGFILE GROUP lg1 ADD UNDOFILE 'undofile.dat' INITIAL_SIZE 16M UNDO_BUFFER_SIZE = 1M ENGINE=NDB; CREATE TABLESPACE ts1 ADD DATAFILE 'datafile.dat' USE LOGFILE GROUP lg1 INITIAL_SIZE 12M ENGINE NDB; ERROR HY000: Failed to create TABLESPACE show warnings; Level Code Message Warning 1296 Got error 299 'Operation not allowed or aborted due to single user mode' from NDB Warning 1296 Failed to create tablespace 'ts1' in NDB Error 1528 Failed to create TABLESPACE DROP LOGFILE GROUP lg1 ENGINE =NDB; ERROR HY000: Failed to drop LOGFILE GROUP show warnings; Level Code Message Warning 1296 Got error 299 'Operation not allowed or aborted due to single user mode' from NDB Warning 1296 Failed to drop logfile group 'lg1' from NDB Error 1529 Failed to drop LOGFILE GROUP CREATE TABLESPACE ts1 ADD DATAFILE 'datafile.dat' USE LOGFILE GROUP lg1 INITIAL_SIZE 12M ENGINE NDB; ALTER TABLESPACE ts1 DROP DATAFILE 'datafile.dat'; ERROR HY000: Failed to alter: DROP DATAFILE FAILED show warnings; Level Code Message Warning 1296 Got error 299 'Operation not allowed or aborted due to single user mode' from NDB Warning 1296 Failed to drop datafile 'datafile.dat' from NDB Error 1533 Failed to alter: DROP DATAFILE FAILED ALTER TABLESPACE ts1 DROP DATAFILE 'datafile.dat'; DROP TABLESPACE ts1; ERROR HY000: Failed to drop TABLESPACE show warnings; Level Code Message Warning 1296 Got error 299 'Operation not allowed or aborted due to single user mode' from NDB Warning 1296 Failed to drop tablespace 'ts1' from NDB Error 1529 Failed to drop TABLESPACE DROP TABLESPACE ts1; DROP LOGFILE GROUP lg1 ENGINE =NDB; insert into t1 values (1,1,0),(2,2,0),(3,3,0),(4,4,0),(5,5,0),(6,6,0),(7,7,0),(8,8,0),(9,9,0),(10,10,0); create table t2 as select * from t1; select * from t1 where a = 1; a b c 1 1 0 select * from t1 where b = 4; a b c 4 4 0 select * from t1 where a > 4 order by a; a b c 5 5 0 6 6 0 7 7 0 8 8 0 9 9 0 10 10 0 update t1 set b=102 where a = 2; update t1 set b=103 where b = 3; update t1 set b=b+100; update t1 set b=b+100 where a > 7; delete from t1; insert into t1 select * from t2; create unique index new_index on t1 (b,c); Cluster Configuration --------------------- [ndbd(NDB)] 2 node(s) id=1 @127.0.0.1 (MYSQL_VERSION NDB_VERSION, single user mode, Nodegroup: 0, *) id=2 @127.0.0.1 (MYSQL_VERSION NDB_VERSION, single user mode, Nodegroup: 0) [ndb_mgmd(MGM)] 1 node(s) id=3 @127.0.0.1 (MYSQL_VERSION NDB_VERSION) [MYSQL_VERSION NDB_VERSION)] 14 node(s) id=16 @127.0.0.1 (MYSQL_VERSION NDB_VERSION) id=32 (not connected, accepting connect from localhost) id=48 (not connected, accepting connect from localhost) id=49 @127.0.0.1 (MYSQL_VERSION NDB_VERSION, allowed single user) id=63 (not connected, accepting connect from localhost) id=127 (not connected, accepting connect from localhost) id=192 (not connected, accepting connect from localhost) id=228 (not connected, accepting connect from localhost) id=229 (not connected, accepting connect from localhost) id=230 (not connected, accepting connect from localhost) id=231 (not connected, accepting connect from localhost) id=232 (not connected, accepting connect from localhost) id=233 (not connected, accepting connect from localhost) id=255 (not connected, accepting connect from localhost) drop table t2; drop table t1; ERROR HY000: Storage engine can't drop table 'test.t1' create index new_index_fail on t1 (c); ERROR HY000: Got error 299 'Operation not allowed or aborted due to single user mode' from NDBCLUSTER insert into t1 values (21,21,0),(22,22,0),(23,23,0),(24,24,0),(25,25,0),(26,26,0),(27,27,0),(28,28,0),(29,29,0),(210,210,0); ERROR HY000: Got error 299 'Operation not allowed or aborted due to single user mode' from NDBCLUSTER select * from t1 where a = 1; ERROR HY000: Got error 299 'Operation not allowed or aborted due to single user mode' from NDBCLUSTER select * from t1 where b = 4; ERROR HY000: Got error 299 'Operation not allowed or aborted due to single user mode' from NDBCLUSTER update t1 set b=102 where a = 2; ERROR HY000: Got error 299 'Operation not allowed or aborted due to single user mode' from NDBCLUSTER update t1 set b=103 where b = 3; ERROR HY000: Got error 299 'Operation not allowed or aborted due to single user mode' from NDBCLUSTER update t1 set b=b+100; ERROR HY000: Got error 299 'Operation not allowed or aborted due to single user mode' from NDBCLUSTER update t1 set b=b+100 where a > 7; ERROR HY000: Got error 299 'Operation not allowed or aborted due to single user mode' from NDBCLUSTER BEGIN; update t1 set b=b+100 where a=1; BEGIN; update t1 set b=b+100 where a=2; update t1 set b=b+100 where a=3; COMMIT; update t1 set b=b+100 where a=4; ERROR HY000: Got error 299 'Operation not allowed or aborted due to single user mode' from NDBCLUSTER ROLLBACK; create table t2 (a int) engine myisam; alter table t2 add column (b int); drop table t2; drop table t1;