ADW - Autonomous Database details

Oracle Cloud ADW - Autonomous Database details

Run Python Application Without a Wallet

Network

Access type:

• Allow secure access from specified IPs and VCNs

Access control list:

• Enabled IP: 36.112.25.131,132.145.51.204

- OR -

• CIDR: 0.0.0.0/0

Mutual TLS (mTLS) authentication:

• Not Required

DSN='(description= (retry_count=20)(retry_delay=3)(address=(protocol=tcps)(port=1522)(host=adb.uk-london-1.oraclecloud .com))(connect_data=(service_name=g0afda210a8192f_bidb_medium.adb.oraclecloud.com))(security=(ssl_server_cert_dn="CN=a dwc.eucom-central-1.oraclecloud.com, OU=Oracle BMCS FRANKFURT, O=Oracle Corporation, L=Redwood City, ST=California,  C=US")))'
USER='admin'
PASSWD='PASSWORD'

import oracledb

conn=oracledb.connect(user=USER, password=PASSWD, dsn=DSN)
cur=conn.cursor()
res=cur.execute("select count(*) from tab")
for TN in res:
    print(TN)

Error

AttributeError: module 'lib' has no attribute 'X509_V_FLAG_CB_ISSUER_CHECK'

系统当前的 python 和 pyOpenSSL 版本不对应

mv /usr/lib/python3/dist-packages/OpenSSL /tmp/

pip3 install pyOpenSSL --upgrade

Collecting pyOpenSSL
  Downloading pyOpenSSL-22.1.0-py3-none-any.whl (57 kB)
     |████████████████████████████████| 57 kB 5.5 MB/s 
Requirement already satisfied, skipping upgrade: cryptography<39,>=38.0.0 in /usr/local/lib/python3.8/dist-packages ( from pyOpenSSL) (38.0.4)
Requirement already satisfied, skipping upgrade: cffi>=1.12 in /usr/local/lib/python3.8/dist-packages (from  cryptography<39,>=38.0.0->pyOpenSSL) (1.15.0)
Requirement already satisfied, skipping upgrade: pycparser in /usr/local/lib/python3.8/dist-packages (from  cffi>=1.12->cryptography<39,>=38.0.0->pyOpenSSL) (2.21)
Installing collected packages: pyOpenSSL
  Attempting uninstall: pyOpenSSL
    Found existing installation: pyOpenSSL 19.0.0
    Not uninstalling pyopenssl at /usr/lib/python3/dist-packages, outside environment /usr
    Can't uninstall 'pyOpenSSL'. No files were found to uninstall.
Successfully installed pyOpenSSL-22.1.0