一个drop operation 持续2天没有出来!!
接到T3的请求说一个Drop materialied view preserve table 持续2天没有出来。
原来是被一个大的SQL block住了。
看来是一个大的循环。
SQL> select xidusn, object_id, session_id, locked_mode from v$locked_object;
XIDUSN OBJECT_ID SESSION_ID LOCKED_MODE
---------- ---------- ---------- -----------
9 212 242 3
9 224 242 3
9 228 242 3
9 226 242 3
9 220 242 3
SQL> SELECT PID FROM V$PROCESS WHERE ADDR=
2 (SELECT PADDR FROM V$SESSION WHERE SID=242);
PID
----------
136
SQL> select blocking_session,event from v$session where sid=242;
BLOCKING_SESSION
----------------
EVENT
--------------------------------------------------------------------------------
264
library cache lock
SQL> select sql_id,sql_hash_value,sql_address
2 from v$session where sid=264;
SQL_ID SQL_HASH_VALUE SQL_ADDRESS
-------------------------- -------------- ----------------
2h78kmrvf333d 4141976685 0000000389313F10
SQL> select SQL_FULLTEXT from v$sql where SQL_ID='2h78kmrvf333d';
The follow SQL block the drop operation.
/* Formatted on 2009/08/04 13:34 (Formatter Plus v4.8.8) */
SELECT devs.device_name, al.nbocc, al.nbalert, al.nbticket, al.nbmast, t999,
t998, t997, t996, t995, t994, t993, t992, t991, t990, t989, t988,
t987, t986, t985, t984, t983, t982, t981, t980, t979, t978, t977,
t976, t975, t974, t973, t972, t971, t970, t969, t968, t967, t966,
t965, t964, t963, t962, t961, t960, t959, t958, t957, t956, t955,
t954, t953, t952, t951, t950, t949, t948, t947, t946, t945, t944,
t943, t942, t941, t940, t939, t938, t937, t936, t935, t934, t933,
t932, t931, t930, t929, t928, t927, t926, t925, t924, t923, t922,
t921, t920, t919, t918, t917, t916, t915, t914, t913, t912, t911,
t910, t909, t908, t907, t906, t905, t904, t903, t902, t901, t900,
t899, t898, t897, t896, t895, t894, t893, t892, t891, t890, t889,
t888, t887, t886, t885, t884, t883, t882, t881, t880, t879, t878,
t877, t876, t875, t874, t873, t872, t871, t870, t869, t868, t867,
t866, t865, t864, t863, t862, t861, t860, t859, t858, t857, t856,
t855, t854, t853, t852, t851, t850, t849, t848, t847, t846, t845,
t844, t843, t842, t841, t840, t839, t838, t837, t836, t835, t834,
t833, t832, t831, t830, t829, t828, t827, t826, t825, t824, t823,
t822, t821, t820, t819, t818, t817, t816, t815, t814, t813, t812,
t811, t810, t809, t808, t807, t806, t805, t804, t803, t802, t801,
t800, t799, t798, t797, t796, t795, t794, t793, t792, t791, t790,
t789, t788, t787, t786, t785, t784, t783, t782, t781, t780, t779,
t778, t777, t776, t775, t774, t773, t772, t771, t770, t769, t768,
t767, t766, t765, t764, t763, t762, t761, t760, t759, t7