Oracle 修改processes参数之后，数据库启动报ORA-600 [ksunfy : too few sessions]错误

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对应的alert日志信息

Fri Dec 26 22:39:18 2025
Starting ORACLE instance (normal)
Errors in file D:\ORACLE64\diag\rdbms\ora817\ora817\trace\ora817_ora_2532.trc  (incident=52848):
ORA-00600: internal error code, arguments: [ksunfy : too few sessions], [9536],[75072],[],[],[],[],[],[],[],[],[]
Incident details in: D:\ORACLE64\diag\rdbms\ora817\ora817\incident\incdir_52848\ora817_ora_2532_i52848.trc
Sweep [inc][52848]: completed
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.

trace信息

Dump file D:\ORACLE64\diag\rdbms\ora817\ora817\incident\incdir_52848\ora817_ora_2532_i52848.trc
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Windows NT Version V6.2  
CPU                 : 64 - type 8664, 32 Physical Cores
Process Affinity    : 0x0x0000000000000000
Memory (Avail/Total): Ph:119070M/130752M, Ph+PgF:138338M/150208M 
Instance name: ora817
Redo thread mounted by this instance: 0 <none>
Oracle process number: 0
Windows thread id: 2532, image: ORACLE.EXE (SHAD)


*** 2025-12-26 22:39:20.746
Dump continued from file: D:\ORACLE64\diag\rdbms\ora817\ora817\trace\ora817_ora_2532.trc
ORA-00600: internal error code, arguments: [ksunfy : too few sessions], [9536],[75072],[],[],[],[],[],[],[],[],[]

========= Dump for incident 52848 (ORA 600 [ksunfy : too few sessions]) ========

*** 2025-12-26 22:39:20.770
dbkedDefDump(): Starting incident default dumps (flags=0x2, level=3, mask=0x0)
----- SQL Statement (None) -----
Current SQL information unavailable - no session.

----- Call Stack Trace -----
calling              call     entry                argument values in hex      
location             type     point                (? means dubious value)     
-------------------- -------- -------------------- ----------------------------
ksedst1()+129        CALL???  skdstdst()           00190E43A 000000000 000000000
                                                   00000001D
ksedst()+69          CALL???  ksedst1()            003030000 000000000 1477C1B20
                                                   25A00000007
dbkedDefDump()+4541  CALL???  ksedst()             000000000 000000000 000000000
                                                   0464DFF90
ksedmp()+43          CALL???  dbkedDefDump()       000000003 000000002 000000000
                                                   000000000
ksfdmp()+87          CALL???  ksedmp()             000000000 000000000 000000000
                                                   000000000
dbgexPhaseII()+1819  CALL???  ksfdmp()             000000000 000000000 000000000
                                                   000000000
dbgexProcessError()  CALL???  dbgexPhaseII()       0009C0518 0009CD3F0 00000CE70
+3008                                              000000002
dbgeExecuteForError  CALL???  dbgexProcessError()  0009C0518 0009C74E8 000000001
()+65                                              000000000
dbgePostErrorKGE()+  CALL???  dbgeExecuteForError  000000000 000000030 000000201
2255                          ()                   0464D9280
dbkePostKGE_kgsf()+  CALL???  dbgePostErrorKGE()   00ABF9730 000000000 000000258
77                                                 767287A10789
kgeadse()+349        CALL???  dbkePostKGE_kgsf()   000092A00 14008CE12 14777712C
                                                   100000000
kgerinv_internal()+  CALL???  kgeadse()            000000001 000000000 1476C3B6C
76                                                 14008D953
kgerinv()+49         CALL???  kgerinv_internal()   000000004 A0000027318
                                                   100000004 000004A20
kgeasnmierr()+64     CALL???  kgerinv()            000000000 7FFEEB3DAFB0
                                                   1492BD1C0 00000003F
ksunfy()+6598        CALL???  kgeasnmierr()        1477094CC 00ABF9170 0000011F8
                                                   000000002
kscnfy()+1091        CALL???  ksunfy()             000666EF8 00161F45D 000DD7800
                                                   800000000000000
ksmcsg()+7168        CALL???  kscnfy()             100000004 1492BD1C0 0009C0518
                                                   0009C0518
opistr_real()+1225   CALL???  ksmcsg()             000000000 000000000 000000000
                                                   000000000
opistr()+350         CALL???  opistr_real()        000000030 000000002 0464DE080
                                                   000000000
opiodr()+1644        CALL???  opistr()             000000030 000000002 0464DE080
                                                   000A75FC8
ttcpip()+1325        CALL???  opiodr()             000000030 000000002 0464DE080
                                                   000000000
opitsk()+2092        CALL???  ttcpip()             00AC15970 000000000 000000000
                                                   000000000
opiino()+1246        CALL???  opitsk()             00000001E 000000000 100000000
                                                   003EBCD8D
opiodr()+1644        CALL???  opiino()             00000003C 000000004 0464DFAB0
                                                   000000000
opidrv()+862         CALL???  opiodr()             00000003C 000000004 0464DFAB0
                                                   000000000
sou2o()+98           CALL???  opidrv()+150         00000003C 000000004 0464DFAB0
                                                   000000000
opimai_real()+158    CALL???  sou2o()              1DC76756A6A6157 000000000
                                                   000000000 0464DFBA4
opimai()+191         CALL???  opimai_real()        000000000 000000000 000000000
                                                   000000000
OracleThreadStart()  CALL???  opimai()             000000000 000000002 148D22CA0
+724                                               000000000
00007FFFFA008364     CALL???  OracleThreadStart()  0461DFF18 000000000 000000000
                                                   000000000
00007FFFFAE37091     CALL???  00007FFFFA008350     000000000 000000000 000000000
                                                   000000000
 

--------------------- Binary Stack Dump ---------------------

查询mos发现出现ORA-600 ksunfy : too few sessions错误官方给出来的解释是由于session超过了oracle限制的65536

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但是在win系统中由于系统级别对资源的限制，一般不会超过16k个进程,所以还没有到oracle的本身的session设置限制已经达到上限所以出现该错误