在Oracle 11.2.0.4 RAC环境中，使用DNS服务器解析并安装补丁p29255947_112040_Linux-x86-64.zip后，两个节点的EM服务无法启动，报错nzos_Handshake failed, ret=28864。错误日志显示HTTP连接拒绝。通过排查DNS解析、回滚补丁以及增加HOSTS解析，最终发现可能是DNS解析或补丁兼容性问题。解决方案是使用HOSTS解析以确保EM服务正常启动。"
131384008,8753399,C++实现Windows桌面暗水印源码解析,"['C++', '开发语言', 'Windows编程', '图形界面']
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WIN2012 DNS服务器
安装ORACLE 11g RAC实验环境,用一个win2012 DNS服务器做解析地址, GRID,数据库安装一切正常,建库最后提示EM未能正常启动,提示需要手工设置UNQNAME后启动,照做,三个节点EM全部正常启动.查看CRS\agent\datebase全部正常,关闭EM打补丁p29255947_112040_Linux-x86-64.zip.采用自动方式,补丁全部打完,一切正常.重新启动EM,第一个节点正常,第2\3节点全部失败,但打开EM主页,显示EM代理(emagent)全都正常,检查进程也正常.
检查日志很多类似错误
2019-05-14 11:05:34,905 Thread-1946150912 ERROR upload: FxferSend: HTTP Error=-2 reading request response from: https://orac1.localdomain:1158/em/upload/
2019-05-14 11:05:34,906 Thread-1946150912 ERROR upload: Failed to upload file B0000063.xml: HTTP error.
2019-05-14 11:05:34,915 Thread-1946150912 WARN http: nmehl_connect_internal: connect failed to (orac1.localdomain:1158): 拒绝连接 (error = 111)
2019-05-14 11:05:34,915 Thread-1946150912 ERROR upload: FxferSend: Cannot connect to: https://orac1.localdomain:1158/em/upload/. retStatus=-1
2019-05-14 11:05:34,915 Thread-1946150912 ERROR upload: Failed to upload file B0000063.xml: HTTP error.
2019-05-14 11:05:34,924 Thread-1946150912 WARN http: nmehl_connect_internal: connect failed to (orac1.localdomain:1158): 拒绝连接 (error = 111)
2019-05-14 11:05:34,924 Thread-1946150912 ERROR upload: FxferSend: Cannot connect to: https://orac1.localdomain:1158/em/upload/. retStatus=-1
2019-05-14 11:05:34,924 Thread-1946150912 ERROR upload: Failed to upload file B0000063.xml: HTTP error.
2019-05-14 11:05:34,924 Thread-1946150912 ERROR upload: 3 Failures in a row or XML error for B0000063.xml, retcode = -2, we give up
2019-05-14 11:05:35,934 Thread-1946150912 WARN http: nmehl_connect_internal: connect failed to (orac1.localdomain:1158): 拒绝连接 (error = 111)
2019-05-14 11:05:35,934 Thread-1946150912 ERROR upload: FxferSend: Cannot connect to: https://orac1.localdomain:1158/em/upload/. retStatus=-1
2019-05-14 11:05:35,934 Thread-1946150912 ERROR upload: Failed to upload file B0000063.xml: HTTP error.
2019-05-14 11:05:35,942 Thread-1946150912 WARN http: nmehl_connect_internal: connect failed to (orac1.localdomain:1158): 拒绝连接 (error = 111)
2019-05-14 11:05:35,942 Thread-1946150912 ERROR upload: FxferSend: Cannot connect to: https://orac1.localdomain:1158/em/upload/. retStatus=-1
2019-05-14 11:05:35,943 Thread-1946150912 ERROR upload: Failed to upload file B0000063.xml: HTTP error.
2019-05-14 11:05:35,951 Thread-1946150912 WARN http: nmehl_connect_internal: connect failed to (orac1.localdomain:1158): 拒绝连接 (error = 111)
2019-05-14 11:05:35,951 Thread-1946150912 ERROR upload: FxferSend: Cannot connect to: https://orac1.localdomain:1158/em/upload/. retStatus=-1
2019-05-14 11:05:35,951 Thread-1946150912 ERROR upload: Failed to upload file B0000063.xml: HTTP error.
2019-05-14 11:05:35,951 Thread-1946150912 ERROR upload: 3 Failures in a row or XML error for B0000063.xml, retcode = -2, we give up
2019-05-14 11:05:40,962 Thread-2153957376 WARN http: nmehl_connect_internal: connect failed to (orac1.localdomain:1158): 拒绝连接 (error = 111)
2019-05-14 11:05:40,962 Thread-2153957376 ERROR upload: FxferSend: Cannot connect to: https://orac1.localdomain:1158/em/upload/. retStatus=-1
2019-05-14 11:05:40,962 Thread-2153957376 ERROR upload: Failed to upload file B0000063.xml: HTTP error.
2019-05-14 11:05:40,971 Thread-2153957376 WARN http: nmehl_connect_internal: connect failed to (orac1.localdomain:1158): 拒绝连接 (error = 111)
2019-05-14 11:05:40,971 Thread-2153957376 ERROR upload: FxferSend: Cannot connect to: https://orac1.localdomain:1158/em/upload/. retStatus=-1
2019-05-14 11:05:40,971 Thread-2153957376 ERROR upload: Failed to upload file B0000063.xml: HTTP error.
2019-05-14 11:05:40,979 Thread-2153957376 WARN http: nmehl_connect_internal: connect failed to (orac1.localdomain:1158): 拒绝连接 (error = 111)
2019-05-14 11:05:40,979 Thread-2153957376 ERROR upload: FxferSend: Cannot connect to: https://orac1.localdomain:1158/em/upload/. retStatus=-1
2019-05-14 11:05:40,980 Thread-2153957376 ERROR upload: Failed to upload file B0000063.xml: HTTP error.
2019-05-14 11:05:40,980 Thread-2153957376 ERROR upload: 3 Failures in a row or XML error for B0000063.xml, retcode = -2, we give up
2019-05-14 11:05:43,989 Thread-2153957376 WARN http: nmehl_connect_internal: connect failed to (orac1.localdomain:1158): 拒绝连接 (error = 111)
2019-05-14 11:05:43,989 Thread-2153957376 ERROR upload: FxferSend: Cannot connect to: https://orac1.localdomain:1158/em/upload/. retStatus=-1
2019-05-14 11:05:43,990 Thread-2153957376 ERROR upload: Failed to upload file B0000063.xml: HTTP error.
2019-05-14 11:05:43,998 Thread-2153957376 WARN http: nmehl_connect_internal: connect failed to (orac1.localdomain:1158): 拒绝连接 (error = 111)
2019-05-14 11:05:43,998 Thread-2153957376 ERROR upload: FxferSend: Cannot connect to: https://orac1.localdomain:1158/em/up
1.
psu
概述
Oracle
PSU
的全名是Patch Set Update，是
Oracle
对于发行的官方补丁包，包含了bug的修复。
Oracle
选取被用户下载数量多，且被验证过具有较低风险的补丁放入到每个季度的
PSU
中。在每个
PSU
中不但包含Bug的修复而且还包含了最新的CPU。
PSU
通常随CPU一起发布。
在新部署环境建议打上最新的补丁包
2.升级环境描述
本次升级基本环境如下：
数据库版本
升级
psu
版本
在向第三方系统发送HTTPS请求的时候，报错
ERROR
=> Secu
SSL
_SessionStartNB(): incomplete
SSL
handshake
[s
ssl
secu.c 4955]
ERROR
=>Sap
SSL
SessionStartNB(s
ssl
_hdl=7f8cf0018240)==S
SSL
RC_CONN_CLOSED
SAP没有开通HTTPS服务
解决方法：
设置如下三个参数
ssl
/ciphersuites：135:PFS:HIGH::EC_P256:EC
报错信息：[3488:1356:0512/211222.342:
ERROR
:
ssl
_client_socket_impl.cc(1098)]
handshake
failed
; returned -1,
SSL
error
code 1, net_
error
-101Chrome浏览器解决方案：from selenium import webdriver
if __name__ == '__mai...
nginx做正向代理https遇到502错误返回，查看nginx的错误日志发现有大量的此类错误
SSL
_do_
handshake
()
failed
(
SSL
:
error
:14094085:
SSL
routines:
ssl
3_read_bytes:ccs received early) while
SSL
handshaking, client: 52.81.99.160
配置nginx反向代理Tomcat证书发现502
nginx报错：
SSL
_do_
handshake
()
failed
(
SSL
:
error
:140770FC:
SSL
routines:
SSL
23_GET_SERVER_HELLO:unknown protocol) while
SSL
handshaking to upstream
将图片中http_pass中的https改成http即可
