ora00600[kkocxj:pjpCtx]内部错误一例

一套HP-UX上的10.2.0.4系统在运行某条 select查询语句时出现ORA-00600[kkocxj:pjpCtx]内部错误，TRACE文件信息如下：

FILE VERSION
------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORACLE_HOME = /oracle/app/oracle/product/10.2
System name:    HP-UX
Node name:      crmdb1
Release:        B.11.31
Version:        U
Machine:        ia64
Instance name: cbssnm
Redo thread mounted by this instance: 1

TRACE FILE
---------------
Filename = cbssnm_ora_29061.trc

*** ACTION NAME:(SQL 窗口 - 新建) 2010-07-02 15:59:46.238
*** MODULE NAME:(PL/SQL Developer) 2010-07-02 15:59:46.238
*** SERVICE NAME:(SYS$USERS) 2010-07-02 15:59:46.238
*** SESSION ID:(770.4341) 2010-07-02 15:59:46.237
*** 2010-07-02 15:59:46.237
ksedmp: internal or fatal error
ORA-00600: internal error code, arguments: [kkocxj : pjpCtx], [], [], [], [], [], [], []
Current SQL statement for this session:
select p.access_number, aa.name
 from crm.product p,
      (select aa.prod_id, os.name, os.staff_number
         from (select *
                 from (select prod_id,
                              party_id,
                              row_number() over(partition by prod_id order by start_dt desc) num
                         from crm.party_2_prod
                        where end_dt > sysdate
                          and party_product_rela_role_cd = 3)
                where num = 1) aa,
              crm.our_staff os
        where aa.party_id = os.staff_id) aa
where p.prod_id = aa.prod_id(+)
  and p.access_number = '15335581126'
----- Call Stack Trace -----
    ksedst <- ksedmp <- ksfdmp <- kgerinv <- kgeasnmierr        
<- $cold_kkocxj <- kkoiqb <- kkooqb <- kkoqbc <- apakkoqb         
<- apaqbdDescendents <- apaqbd <- kkqctCostTransfQB <- kkqctdrvJP 
<- kkqjpdttr          <- kkqctdrvTD <- kkqjpddrv <- kkqdrv <- kkqctdrvIT 
<- apadrv           <- opitca <- kksFullTypeCheck <- rpiswu2 <- kksLoadChild 
<- kxsGetRuntimeLock            <- kksfbc <- kkspsc0 <- kksParseCursor 
<- opiosq0 <- kpooprx             <- kpoal8 <- opiodr <- ttcpip <- opitsk 
<- opiino              <- opiodr <- opidrv <- sou2o <- opimai_real <- main               
<- main_opd_entry

根据错误代码和stack trace可以在metalink上匹配到如下Bug:

Bug:7014646
Abstract: ORA-600: INTERNAL ERROR CODE, ARGUMENTS: [KKOCXJ : PJPCTX], [], [], [], [], []
Affects:
    Product (Component)	Oracle Server (Rdbms)
    Range of versions believed to be affected	Versions < 11.2
    Versions confirmed as being affected	
        * 10.2.0.4
        * 11.1.0.6 
    Platforms affected	Generic (all / most platforms affected)
Fixed:
    This issue is fixed in	
        * 10.2.0.4 Patch 7 on Windows Platforms
        * 10.2.0.5 (Server Patch Set)
        * 11.1.0.7 (Server Patch Set)
        * 11.2 (Future Release) 
Symptoms:
    * Internal Error May Occur (ORA-600)
    * ORA-600 [kkocxj : pjpCtx] 
Related To:
    * Optimizer
    * _OPTIMIZER_PUSH_PRED_COST_BASED 
Description
    A complex query can fail during parse with 
    ORA-600 [kkocxj : pjpCtx]
    Workaround
     Set  "_optimizer_push_pred_cost_based"=false

该bug可以通过实施one off Patch 7014646修复，也可以尝试通过修改隐式参数_optimizer_push_pred_cost_based禁用基于成本的谓词前置特性(WORKAROUND: disable cost based push predicate)来规避该[KKOCXJ:PJPCTX]内部错误发生，具体的修改方法:

SQL> conn / as sysdba
SQL> alter system set "_optimizer_push_pred_cost_based"=false;
SQL> exit
/* 设置该隐式参数无需重启实例 */

Oracle GCS更推荐通过应用补丁7014646的方法来解决问题，而修改以上隐式参数则不一定百分之百能解决问题。