ORA-00001: unique constraint entity framework 6 code first approach

ORA-00001: unique constraint entity framework 6

Solution : - 

The solution is to grant user both: 

'CREATE SEQUENCE' and 

'CREATE TRIGGER' 

permissions and re-create the schema.

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ORA-30673: column to be modified is not an identity column oracle 12c

ORA-30673: column to be modified is not an identity column

Answer : - 

Currently orcle 12c does not support modifying an existing column as IDENTITY column 

Solution : - Solution is to add a new column and then drop the existing one

ALTER TABLE Tablename ADD (ColumnName_NEW NUMBER(3) GENERATED ALWAYS AS IDENTITY);

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Custom ASP.NET Session State Management with Redis

Custom ASP.NET Session State Management with Redis 

What is Redis?

 Redis is an open source key value data structure store. keys can be strings, hashes, lists, sets, sorted sets etc. This in memory data store is broadly used in session state storing and caching.

Steps to Implement redis session 

1 – Install MSI PACKAGE On Server (Download link) 

2 – GO TO  C:\Program Files\Redis

3-  Open - redis.windows.conf  and redis.windows-service.conf

4 – Add server ip to Config files(10.100.30.16)

 ex – bind 127.0.0.1 10.100.30.16 ::1

5- Install RedisSessionStateProvider from Nuget Manager(Client Machine) 

6- Web.config (Client Machine) - 

<sessionState mode="Custom" customProvider="MySessionStateStore">

      <providers>

<add name="MySessionStateStore" type="Microsoft.Web.Redis.RedisSessionStateProvider" host="10.100.30.16" port = "6379" accessKey="" ssl="false" />

      </providers>

    </sessionState>

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ORA-00904 invalid identifier entity framework 6 migration oracle 12c

ORA-00904 invalid identifier

this issue is caused because of we have used oracle keyword in column name. check below image

Action is keyword in oracle. this is the reason oracle appends "" double quotes in column name. 

Solution : - 

Just remove the double quotes and rename column name in Capitalize letters.

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ORA-01407: cannot update to NULL EF 6 Oracle 12c Migration

ORA-01407: cannot up date to NULL

1 - Solution :- 
If we pass "" (blank) value in model. ef will throw error. pass "." or blank space ( )
to avoid this error.

2- Solution :- Set Default value to column

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How to Encrypt Web config in asp.net mvc

1.      Create RSA key container (Development machine).

a.       Run CMD as Administrator

b.       Go To C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319

c.       aspnet_regiis -pc "InternetBanking" –exp

2.      Export the RSA key container (Development machine).

a.       aspnet_regiis -px " InternetBanking" "E:\keys.xml" –pri

3.      Prepare the web.config file for encryption (Development machine).

a.        Add the following code to the web.config file as a child of the <configuration> node

  <configProtectedData>

    <providers>

      <add name="Neorithm" type="System.Configuration.RsaProtectedConfigurationProvider,&#xD;&#xA;          System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a,&#xD;&#xA;          processorArchitecture=MSIL"

      keyContainerName="InternetBanking"

      useMachineContainer="true"/>

    </providers>

  </configProtectedData>

4.       Encrypt the web.config file (Development machine).

a.       For connectionStrings

                                                               i.      aspnet_regiis -pef "connectionStrings" "E:\Publish\5 Oct 2016\API" -prov "Neorithm"

b.       For appSettings

                                                               i.      aspnet_regiis -pef " appSettings " "E:\Publish\5 Oct 2016\API" -prov "Neorithm"

The following steps will be performed on each machine where your web-app will be deployed.

5.      Import the RSA Key container into the machine. (Deployment machine)

Copy the “keys.xml” file to the machine where the app needs to run. Run the following command to import the keys:

aspnet_regiis -pi " InternetBanking " " E:\keys.xml" –exp

To Decrypt Web.Config

C:\Windows\Microsoft.NET\Framework\v4.0.30319>aspnet_regiis -pdf "appSettings" "E:\Model\EBS"

To Encrypt –

C:\Windows\Microsoft.NET\Framework\v4.0.30319>aspnet_regiis -pef "appSettings" "E:\Model\EBS" -prov "Neorithm"

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