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updated oracleai_demo.ipynb (#22635)

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The outer try/except block handles connection errors, and the inner
try/except block handles SQL execution errors, providing detailed error
messages for both.
try:
    conn = oracledb.connect(user=username, password=password, dsn=dsn)
    print("Connection successful!")

    cursor = conn.cursor()
    try:
        cursor.execute(
            """
            begin
                -- Drop user
                begin
                    execute immediate 'drop user testuser cascade';
                exception
                    when others then
dbms_output.put_line('Error dropping user: ' || SQLERRM);
                end;

---------

Co-authored-by: Chester Curme <chester.curme@gmail.com>
This commit is contained in:
Satyam Kumar 2024-06-07 01:59:24 +05:30 committed by GitHub
parent 035a9c9609
commit 835926153b
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1 changed files with 38 additions and 34 deletions
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72
cookbook/oracleai_demo.ipynb
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@ -86,8 +86,7 @@
"\n",
"import oracledb\n",
"\n",
"# please update with your username, password, hostname and service_name\n",
"# please make sure this user has sufficient privileges to perform all below\n",
"# Update with your username, password, hostname, and service_name\n",
"username = \"\"\n",
"password = \"\"\n",
"dsn = \"\"\n",
@ -97,40 +96,45 @@
" print(\"Connection successful!\")\n",
"\n",
" cursor = conn.cursor()\n",
" cursor.execute(\n",
" \"\"\"\n",
" begin\n",
" -- drop user\n",
" begin\n",
" execute immediate 'drop user testuser cascade';\n",
" exception\n",
" when others then\n",
" dbms_output.put_line('Error setting up user.');\n",
" end;\n",
" execute immediate 'create user testuser identified by testuser';\n",
" execute immediate 'grant connect, unlimited tablespace, create credential, create procedure, create any index to testuser';\n",
" execute immediate 'create or replace directory DEMO_PY_DIR as ''/scratch/hroy/view_storage/hroy_devstorage/demo/orachain''';\n",
" execute immediate 'grant read, write on directory DEMO_PY_DIR to public';\n",
" execute immediate 'grant create mining model to testuser';\n",
"\n",
" -- network access\n",
" begin\n",
" DBMS_NETWORK_ACL_ADMIN.APPEND_HOST_ACE(\n",
" host => '*',\n",
" ace => xs$ace_type(privilege_list => xs$name_list('connect'),\n",
" principal_name => 'testuser',\n",
" principal_type => xs_acl.ptype_db));\n",
" end;\n",
" end;\n",
" \"\"\"\n",
" )\n",
" print(\"User setup done!\")\n",
" cursor.close()\n",
" try:\n",
" cursor.execute(\n",
" \"\"\"\n",
" begin\n",
" -- Drop user\n",
" begin\n",
" execute immediate 'drop user testuser cascade';\n",
" exception\n",
" when others then\n",
" dbms_output.put_line('Error dropping user: ' || SQLERRM);\n",
" end;\n",
" \n",
" -- Create user and grant privileges\n",
" execute immediate 'create user testuser identified by testuser';\n",
" execute immediate 'grant connect, unlimited tablespace, create credential, create procedure, create any index to testuser';\n",
" execute immediate 'create or replace directory DEMO_PY_DIR as ''/scratch/hroy/view_storage/hroy_devstorage/demo/orachain''';\n",
" execute immediate 'grant read, write on directory DEMO_PY_DIR to public';\n",
" execute immediate 'grant create mining model to testuser';\n",
" \n",
" -- Network access\n",
" begin\n",
" DBMS_NETWORK_ACL_ADMIN.APPEND_HOST_ACE(\n",
" host => '*',\n",
" ace => xs$ace_type(privilege_list => xs$name_list('connect'),\n",
" principal_name => 'testuser',\n",
" principal_type => xs_acl.ptype_db)\n",
" );\n",
" end;\n",
" end;\n",
" \"\"\"\n",
" )\n",
" print(\"User setup done!\")\n",
" except Exception as e:\n",
" print(f\"User setup failed with error: {e}\")\n",
" finally:\n",
" cursor.close()\n",
" conn.close()\n",
"except Exception as e:\n",
" print(\"User setup failed!\")\n",
" cursor.close()\n",
" conn.close()\n",
" print(f\"Connection failed with error: {e}\")\n",
" sys.exit(1)"
]
},