alarm_template_id=0:ob_cluster=oa-1749632252:host=192.168.2.7 OBServer crash

[OBServer crash] 集群：oa，主机：192.168.2.7，日志类型：observer，日志文件：/home/admin/oceanbase/log/observer.log，日志级别：INFO，关键字=CRASH ERROR!!!，错误码=-1，日志详情=[2026-08-20 16:02:30.230947] INFO [RPC.OBMYSQL] destroy (obsm_conn_callback.cpp:244) [1554041][sql_nio19][T0][Y0-0000000000000000-0-0] [lt=2] connection close(sessid=3224015923, proxy_sessid=13882532270319034335, tenant_id=1006, from_proxy=true, from_java_client=false, c/s protocol="OB_2_0_CS_TYPE", is_need_clear_sessid_=true, is_sess_alloc_=true, ret=0, trace_id=YB42C0A80207-0006565BE75E5893-0-0, conn.pkt_rec_wrapper_=[start_pkt_pos_:1867, cur_pkt_pos_:1873, pkt_rec[1841]:{send:obp_compess_header_{com_len:8687, com_seq:1}, obp20_header_:{payload_len:8659, pkt_seq:1, req_id:13002243, flag_.flags:10, ext_flags:0}, obp_mysql_header_{len_:5, seq_:2}, pkt_name:"PKT_RESHEAD", obp_mysql_header_.is_send_:1}, pkt_rec[1842]:{send:obp_compess_header_{com_len:8687, com_seq:1}, obp20_header_:{payload_len:8659, pkt_seq:1, req_id:13002243, flag_.flags:10, ext_flags:0}, obp_mysql_header_{pkt_num_:107, seq_:97}, pkt_name:"PKT_FIELD", obp_mysql_header_.is_send_:1}, pkt_rec[1843]:{send:obp_compess_header_{com_len:8687, com_seq:1}, obp20_header_:{payload_len:8659, pkt_seq:1, req_id:13002243, flag_.flags:10, ext_flags:0}, obp_mysql_header_{len_:9, seq_:98}, pkt_name:"PKT_EOF", obp_mysql_header_.is_send_:1}, pkt_rec[1844]:{send:obp_compess_header_{com_len:8687, com_seq:1}, obp20_header_:{payload_len:8659, pkt_seq:1, req_id:13002243, flag_.flags:10, ext_flags:0}, obp_mysql_header_{pkt_num_:6, seq_:99}, pkt_name:"PKT_ROW", obp_mysql_header_.is_send_:1}, pkt_rec[1845]:{send:obp_compess_header_{com_len:8687, com_seq:1}, obp20_header_:{payload_len:8659, pkt_seq:1, req_id:13002243, flag_.flags:10, ext_flags:0}, obp_mysql_header_{len_:9, seq_:100}, pkt_name:"PKT_EOF", obp_mysql_header_.is_send_:1}, pkt_rec[1846]:{send:obp_compess_header_{com_len:8687, com_seq:1}, obp20_header_:{payload_len:8659, pkt_seq:1, req_id:13002243, flag_.flags:10, ext_flags:0}, obp_mysql_header_{len_:12, seq_:101}, pkt_name:"PKT_OKP", obp_mysql_header_.is_send_:1}, pkt_rec[1847]:{receive:obp20_header_:{payload_len:107, pkt_seq:0, req_id:13002244, flag_.flags:62,...。