SQL1225N The request failed because an operationg system process XXX reached. SQLSTATE=57049？

db2inst1.nfy 信息如下： 2020-09-21-11.21.16.593685 Instance:db2i4jn Node:000 PID:12575(db2agent (FEPDB) 0) TID:645902896 Appid:*LOCAL.db2i4jn.200921032114 base sys utilities sqeAgentServices::RequestAgent Probe:2958 Database:FEPDB ADM7519W DB2 could not allocate an agent. The SQLCODE is "-1225".  2020-09-21-11.21.16.675331 Instance:db2i4jn Node:000 PID:12575(db2agent (FEPDB) 0) TID:645902896 Appid:*LOCAL.db2i4jn.200921032114 base sys utilities sqleDoForceDBShutdownFODC Probe:10 Database:FEPDB ADM14001C An unexpected and critical error has occurred: "ForceDBShutdown". The instance may have been shutdown as a result. "Automatic" FODC (First Occurrence Data Capture) has been invoked and diagnostic information has been recorded in directory "/home/db2i4jn/sqllib/db2dump/FODC_ForceDBShutdown_2020-09-21-11.21.16.675027_0 000/". Please look in this directory for detailed evidence about what happened and contact IBM support if necessary to diagnose the problem.  2020-09-21-11.21.16.675546 Instance:db2i4jn Node:000 PID:12575(db2agent (FEPDB) 0) TID:645902896 Appid:*LOCAL.db2i4jn.200921032114 base sys utilities sqleDoForceDBShutdownFODC Probe:16482 Database:FEPDB ADM7518C The database manager has shut down the following database because a severe error has occurred: "FEPDB ".  2020-09-21-11.21.21.879793 Instance:db2i4jn Node:000 PID:12575(db2tcpcm 0) TID:675263024 Appid:none base sys utilities sqeAgentServices::RequestAgent Probe:2958 ADM7519W DB2 could not allocate an agent. The SQLCODE is "-1225".  2020-09-21-11.21.21.880065 Instance:db2i4jn Node:000 PID:12575(db2tcpcm 0) TID:675263024 Appid:none common communication sqlcctcpconnmgr_child Probe:125 ADM7009E An error was encountered in the "TCPIP" protocol support. A possible cause is that the maximum number of agents has been exceeded.  2020-09-21-11.21.22.614275 Instance:db2i4jn Node:000 PID:12575(db2tcpcm 0) TID:671068720 Appid:none base sys utilities sqeAgentServices::RequestAgent Probe:2958 ADM7519W DB2 could not allocate an agent. The SQLCODE is "-1225".  2020-09-21-11.21.22.614499 Instance:db2i4jn Node:000 PID:12575(db2tcpcm 0) TID:671068720 Appid:none common communication sqlcctcpconnmgr_child Probe:125 ADM7009E An error was encountered in the "TCPIP" protocol support. A possible cause is that the maximum number of agents has been exceeded.