ORA 600 504 - cheeyoung/sqlplus-public GitHub Wiki
+24 ORA-00600: internal error code, arguments: [504], [0xC000000AC51A4418], [16], [0], [PC and Classifier lists for WLM], [0], [0], [0x000000000], [], [], [], []
+25
+26 ========= Dump for incident 344114 (ORA 600 [504]) ========
+27 ----- Beginning of Customized Incident Dump(s) -----
+28 *** LATCH HIERARCHY ERROR ***
+29 An attempt to get the 'PC and Classifier lists for WLM' latch at level 0 (address = 0xc000000ac51a4418)
+30 from location 'kjbr.h LINE:2100 ID:enq res to validate list' (also see call stack below)
+31 conflicts with the following held latch(es):
+32 Level 4: 'gcs resource hash' (child #94) (address = 0xc000000a67ffe4a8)
+33 gotten from location 'kjbr.h LINE:1751 ID:kjbrrcres_99'
+34 ----- End of Customized Incident Dump(s) -----
+35
+36 *** 2016-05-26 14:57:31.249
+37 dbkedDefDump(): Starting incident default dumps (flags=0x2, level=3, mask=0x0)
...
+44074 SO: 0xc000000ae9695b10, type: 2, owner: 0x0000000000000000, flag: INIT/-/-/0x00 if: 0x3 c: 0x3
+44075 proc=0xc000000ae9695b10, name=process, file=ksu.h LINE:12721 ID:, pg=0
+44076 (process) Oracle pid:14, ser:1, calls cur/top: 0xc000000ada90e1a8/0xc000000ada90b920
+44077 flags : (0x6) SYSTEM
+44078 flags2: (0x900), flags3: (0x10)
+44079 intr error: 0, call error: 0, sess error: 0, txn error 0
+44080 intr queue: empty
+44081 ksudlp FALSE at location: 0
+44082 (post info) last post received: 0 0 86
+44083 last post received-location: kji.h LINE:3709 ID:kjfclmsync: unfreeze LMS in parallel rcfg sync
+44084 last process to post me: 0xc000000ad1733d18 1 6
+44085 last post sent: 0 0 26
+44086 last post sent-location: ksa2.h LINE:285 ID:ksasnd
+44087 last process posted by me: 0xc000000ad96a5b28 1 6
+44088 (latch info) wait_event=0 bits=0x10
+44089 holding (efd=4) 0xc000000a67ffe4a8 Child gcs resource hash level=4 child#=94
+44090 Location from where latch is held: kjbr.h LINE:1751 ID:kjbrrcres_99:
+44091 Context saved from call: 0
+44092 state=busy [holder orapid=14] wlstate=free [value=0]
+44093 Process Group: DEFAULT, pseudo proc: 0xc000000ac1a14600
+44094 O/S info: user: oracle, term: UNKNOWN, ospid: 24951
+44095 OSD pid info: Unix process pid: 24951, image: oracle@... (LMS1)
...