我需要有人帮助我找出以下死锁的原因。涉及的表是父表/子表，子表具有索引 FK。 家长：PK_FMS_FC_MAIN_FLD_INPUT_LIMIT 智利：FMS_FC_REL_FLD_INPUT_LIMIT
Deadlock graph:
---------Blocker(s)-------- ---------Waiter(s)---------
Resource Name process session holds waits process session holds waits
TX-0019000b-0000b486 22 2755 X 57 492 S
TX-00010019-00061e13 57 492 X 22 2755 S
session 2755: DID 0001-0016-00000FCE session 492: DID 0001-0039-00000719
session 492: DID 0001-0039-00000719 session 2755: DID 0001-0016-00000FCE
Rows waited on:
Session 2755: obj - rowid = 000DB256 - AADbJWABbAAAYJQAAA
(dictionary objn - 897622, file - 91, block - 98896, slot - 0)
Session 492: no row
----- Information for the OTHER waiting sessions -----
Session 492:
sid: 492 ser: 2757 audsid: 132281277 user: 364/GKS_IM_9990740
flags: (0x41) USR/- flags_idl: (0x1) BSY/-/-/-/-/-
flags2: (0x40009) -/-/INC
pid: 57 O/S info: user: grid, term: UNKNOWN, ospid: 16372
image: oracle@hgksdb01
client details:
O/S info: user: imart, term: unknown, ospid: 1234
machine: hgkswa05 program: JDBC Thin Client
application name: JDBC Thin Client, hash value=2546894660
current SQL:
DELETE FROM FMS_FC_MAIN_FLD_INPUT_LIMIT MAIN WHERE MAIN.ID = :B1
----- End of information for the OTHER waiting sessions -----
Information for THIS session:
----- Current SQL Statement for this session (sql_id=56azrvwd48huf) -----
INSERT INTO FMS_FC_REL_FLD_INPUT_LIMIT( ID, RELATION_FIELD_MASTER_CD, CREATE_USER_CD, CREATE_DATE, RECORD_USER_CD, RECORD_DATE ) VALUES( :B4 , :B3 , :B2 , SYSDATE, :B1 , SYSDATE )
----- PL/SQL Stack -----
----- PL/SQL Call Stack -----
object line object
handle number name
0x1f37f7a58 462 package body GKS_IM_9990740.ZPKG_PRJ_FLDREL
0x1ed1a9d38 1 anonymous block
===================================================
CREATE TABLE GKS_IM_9990740.FMS_FC_MAIN_FLD_INPUT_LIMIT
(
ID NUMBER(18,0) NOT NULL,
COMPANY_CD VARCHAR2(100) NOT NULL,
MAIN_FIELD_TYPE VARCHAR2(100) NOT NULL,
RELATION_FIELD_TYPE VARCHAR2(100) NOT NULL,
START_DATE DATE NOT NULL,
MAIN_FIELD_MASTER_CD VARCHAR2(1000) NOT NULL,
MAIN_FIELD_SUB_CD VARCHAR2(1000),
IS_INPUT_ENABLE VARCHAR2(1) NOT NULL,
IS_INPUT_COMPULSORY VARCHAR2(1) NOT NULL,
DEFAULT_VALUE VARCHAR2(1000),
IS_INPUT_LIMIT VARCHAR2(1) NOT NULL,
CREATE_USER_CD VARCHAR2(100) NOT NULL,
CREATE_DATE TIMESTAMP(6) NOT NULL,
RECORD_USER_CD VARCHAR2(100),
RECORD_DATE TIMESTAMP(6),
CONSTRAINT PK_FMS_FC_MAIN_FLD_INPUT_LIMIT PRIMARY KEY (ID) USING INDEX
PCTFREE 10
INITRANS 2
MAXTRANS 255
TABLESPACE FMS_DATA
STORAGE(INITIAL 64K NEXT 1M MINEXTENTS 1 MAXEXTENTS 2147483645 BUFFER_POOL DEFAULT)
LOGGING
)
CREATE TABLE GKS_IM_9990740.FMS_FC_REL_FLD_INPUT_LIMIT
(
ID NUMBER(18,0) NOT NULL,
RELATION_FIELD_MASTER_CD VARCHAR2(1000) NOT NULL,
CREATE_USER_CD VARCHAR2(100) NOT NULL,
CREATE_DATE TIMESTAMP(6) NOT NULL,
RECORD_USER_CD VARCHAR2(100),
RECORD_DATE TIMESTAMP(6),
CONSTRAINT PK_FMS_FC_REL_FLD_INPUT_LIMIT PRIMARY KEY (ID, RELATION_FIELD_MASTER_CD) USING INDEX
PCTFREE 10
INITRANS 2
MAXTRANS 255
TABLESPACE FMS_DATA
STORAGE(INITIAL 64K NEXT 1M MINEXTENTS 1 MAXEXTENTS 2147483645 BUFFER_POOL DEFAULT)
LOGGING,
CONSTRAINT FK_FMS_FC_REL_FLD_INPUT_LIMIT0 FOREIGN KEY (ID) REFERENCES GKS_IM_9990740.FMS_FC_MAIN_FLD_INPUT_LIMIT (ID)
)
PCTFREE 10
MAXTRANS 255
TABLESPACE FMS_DATA
STORAGE(INITIAL 64K NEXT 1M MINEXTENTS 1 MAXEXTENTS 2147483645 BUFFER_POOL DEFAULT)
NOCACHE
LOGGING
CREATE INDEX "GKS_IM_9990740"."FK_FMS_FC_REL_FLD_INPUT_LIMIT" ON "GKS_IM_9990740"."FMS_FC_REL_FLD_INPUT_LIMIT"
(
"ID"
)
PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE
(
INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT
)
TABLESPACE "FMS_DATA" ;
一些想法：1.） 由于死锁中涉及的排队是 TX，而不是 TM，因此这与未索引的外键问题无关。2.） 由于会话在 TX"S"（共享）模式下等待，因此这不是行级锁定问题。3.）由于所涉及的语句之一是INSERT，因此该语句不会成为ITL插槽短缺的问题。
因此，鉴于上述情况，我最好的猜测是：对于删除，位图索引或ITL插槽短缺。对于插入，重叠 PK/UK。
希望有帮助...