aws codedeploy - running sql scripts - aws-code-deploy

I run my sql scripts which inserts data to DB as a part of my codedeploy lifecycle event on a Autoscaling group. The Autoscaling group has 2 instances, the sql scripts run fine on the 1st instance and the deployment is successful on that instance.
In the 2nd instance, as the DB has the data already inserted the sql script fails with the below error message:
[stderr]ERROR 1062 (23000) at line 32: Duplicate entry
Any workaround or solution will be of great help.
Thanks

It suggests that the DB already has an entry which you're trying to insert, hence that error. You may like to first check if the DB has that entry or not.
To identify which part of the script is giving you this error, you may try to create subset of your script and identify the actual cause.
This certainly is the issue when you already have some record(s) and the DB / Table / schema does not allow for duplicate entry.

Assuming your deployment group is a OneAtATime deployment type, then your lifecycle hook should check for the entry before it inserts the SQL.
That way, only the first deployed instance will apply the change. The other deployments will test for the entry, and then skip the insert code phase.

Related

Identify deleted records in PDMlink by querying tables

The PDmlink records are hard deleted in WIndchill from the backend tables.
Users have access to delete the objects created and hence i need to find a way to identify the records deleted.
Is there any table which gives this information in PDMlink database?
Regards
Maha
There is a table called AUDITRECORD in DB which has the details about all the events happened it includes Delete event. But the information will be available only if you have configured Audit Event Recording.
If you have configured then you can get the details by using below query.
select * from auditrecord where eventlabel='Delete';
Refer Windchill helpcenter for steps to configure audit event recording.
In case you have not done this configuration and still wants to fetch the data about deleted objects then
Apache Web server logs and looking at backup of database or current
database doing a negation query to match part object identifer in
apache logs against those still remaining in database. Lot more work,
but not impossible.

Various difficulties creating ASP.NET Session tables via aspnet_regsql.exe

We're trying to move ASP.NET session state for one of our Azure web apps into a database, and it seems like the aspnet_regsql.exe tool is the way to go. Unfortunately, I'm getting stuck on a few issues below. It's an Azure SQL database, and I'm connecting using the server's admin account.
I initially wanted to add the session tables to our existing database, so I ran .\aspnet_regsql.exe -U adminusername -P adminpassword -S servername.database.windows.net -d databasename -ssadd -sstype c. Which throws the exception "Database 'databasename' already exists. Choose a different database name"
Omitting the database name and running it again throws the exception: "Execution Timeout Expired" after about 30 seconds, which is just the default for SqlCommand.CommandTimeout. This occurs while executing the "CREATE DATABASE" command. I tried creating a database manually, and it takes about 50 seconds for some reason. This database is S0 tier and is not under any load
Running aspnet_regsql again on the already-created database (because it's idempotent, right?) leads to the "Database already exists" error, as does pre-creating an empty database for it to start from.
There's no flag that lets me increase the timeout, and I can't set command timeout using the -C (connection string) flag
Adding the -sqlexportonly flag to generate a script and just running that directly doesn't work either (yes, I know I'm not supposed to run InstallSqlState.sql directly). It throws a whole load of error messages saying things like:
Reference to database and/or server name in 'msdb.dbo.sp_add_job' is not supported in this version of SQL Server.
USE statement is not supported to switch between databases.
Which makes me think this script might have some issues with an Azure SQL database...
Does anyone have any ideas?
Update:
It looks like all the errors involving 'msdb' are related to removing and re-adding a database job called 'Job_DeleteExpiredSessions'. Azure SQL doesn't support database jobs, so the only options I can see are
Run SQL on a VM instead (vastly more expensive, and I'd rather stick with the platform services than have to manage VMs)
Implement one of those "Elastic Job Agents"
Perhaps move the same functionality elsewhere (e.g. a stored proc)?
Turns out Microsoft has an article about how to do exactly what I need, which I somehow
missed during my searching yesterday. Hopefully this answer saves someone else a few hours of frustration. All the info you need is at https://azure.microsoft.com/en-au/blog/using-sql-azure-for-session-state/ earlier.
Note that YMMV since it's from 2010 and also says in scary red letters
"Microsoft does not support SQL Session State Management using SQL Azure databases for ASP.net applications"
Nevertheless, they provide a working script that seems to do exactly what I need.

Checkpoint table does not exist even after creating it

I have created checkpoint table ggate for replicat rep1 but still I am getting following error:
2014-09-04 23:38:21 ERROR OGG-00446 Oracle GoldenGate Delivery for
Oracle, REP1.prm: Checkpoint table ggate.checkpoint does not exist.
Please create the table or recreate the REP1 group using the correct
table.
2014-09-04 23:38:21 ERROR OGG-01668 Oracle GoldenGate Delivery for
Oracle, REP1.prm: PROCESS ABENDING.
Can anyone tell me how to resolve it?
In this kind of situations you should:
Have you actually run the ADD CHECKPOINTTABLE? if not run it
Check if the checkpoint table actually exists in the database - if it has been created - try to drop it (DROP CHECKPOINTTABLE) and recreate it (ADD CHECKPOINTTABLE)
Check if the checkpoint parameter is correctly set in the GLOBALS config file
Restart the MGR and Extract/Replicat processes
Verify if the user has access on the database to the checkpoint table (insert, update, delete rights)
If nothing works, run 10046 flag on the target database and check what the GoldenGate Replicat process is executing on the database and when it actually fails (what it wants to do on the database and try to do the same commands by yourself)
This is a simple troubleshooting initiative:
Are you using a traditional non-CDB database or a PDB?
Are you using Classic Architecture or Microservices Architecture? - Different approaches when adding a checkpoint table.
How are you running ADD CHECKPOINTTABLE? From GGSCI/AdminClient or from HTML5 page?
In Classic Architecture, do you have CHECKPOINTTABLE parameter set in GLOBALS? (CHECKPOINTTABLE [container.] owner.table)
Who are you logged into the database as when using DBLOGIN USERIDALIAS?
What replicat are you using? - Classic, Coordinated, Integrated, Parallel?
Check the schema where the table is suppose to be? If not there, you can query the DBA_TABLES view for the name of the checkpoint table and see who owns it.
A lot of times when the checkpint table cannot be created it is due to not updating the GLOBALS file and/or connecting as the correct user to the database.

Automatic fix for tempdb error related to 'ASPStateTempSessions'

As per this how-to, I've successfully configured IIS on my XP-SP3 dev box for SQL Server 2008 Express to save ASP.NET session state information. I'm just using SQL Server because otherwise on every recompile, I was losing the session state which was obnoxious (having to re-login). But, I'm facing an annoying issue in that every time I restart SQL there's this error, and sometimes one or two other very similar friends:
The SELECT permission was denied on the object 'ASPStateTempSessions',
database 'tempdb', schema 'dbo'.
To fix the error, I just open Management Studio and edit the User Mapping for the login/dbo I'm using on the ASPState db, and re-add tempdb to that user with all but deny permissions. Apparently, once the right permissions are there, ASP.NET is able to automatically create the tables it uses. It just can't run that CreateTempTables sproc until the right security is there.
THE QUESTION...
Is there a way to not have to re-do this on every restart of the SQL Server?
I don't really care right now about keeping the temp data across restarts, but I would like to not have to go through this manual step just to get my web app working on localhost, which uses session state variables throughout. I suppose one could resort to some kind of stored procedure within SQL Server to accomplish the task for this machine when the service starts, to not have to do it manually. I'd accept such an answer as a quick fix. But, I'm also assuming there's a better recommended configuration or something. Not seeing an answer to this on the how-to guide or elsewhere here on StackOverflow.
Both answers seem valid; but with most things Microsoft, its all in the setup...
First uninstall the ASPState database by using the command:
aspnet_regsql –ssremove –E -S .
Note:
-E is to indicate you want to use integrated security connection.
-S informs what SQL server and SQL instance to use, and the "." (dot) specifies default local instance
Then re-install using the command:
aspnet_regsql –ssadd –sstype p –E -S .
Note:
The sstype has three options, t | p | c ... the first "t", tells the installer to host all stored procedures in the ASPState database, and all data in the tempdb. The second option "p" tells the installer to persist data to the ASPState database. The last option "c" allows you to specify a different 'custom' database to persist the session state data.
If you reinstall using the "-sstype p" you then need only to supply datareader/datawriter to the ASPState database for the user that's making the connection (in most cases, the application pool's identity in IIS).
The added benefit of persisting the data is that session state is retained even after a restart of the service. The only drawback is that you need to ensure the agent cleanup job is pruning old sessions regularly (it does this by default, every minute).
Important:
If you are running a cluster, you must persist session data. You're only option is to use sstype 'p' or 'c'.
Hope this sheds light on the issue!
For the record, I did find a way to do this.
The issue is that the tempdb is recreated from the model db each time the service restarts. The gist of the solution is to create a stored procedure that does the job, and then make that procedure run at startup.
Source code (credit to the link above) is as follows:
use master
go
-- remove an old version
drop proc AddAppTempDBOwner
go
-- the sp
create proc AddAppTempDBOwner as
declare #sql varchar(200)
select #sql = 'use tempdb' + char(13) + 'exec sp_addrolemember ''db_owner'', ''app'''
exec (#sql)
go
-- add it to the startup
exec sp_procoption 'AddAppTempDBOwner', 'startup', 'true'
go
Well done for finding the strangest way possible to do this.
The correct answer is as follows:
use master
go
EXEC sp_configure 'Cross DB Ownership Chaining', '1'
go
RECONFIGURE
go
EXEC sp_dboption 'ASPState', 'db chaining', 'true'
go

Subsonic: Select on a View, locks the table update?

I have a Web site live and running now. I am using the Subsonic to handle the database connections etc.
I am getting time out expired error while updating a table (say Employee). When I check sp_who2, I see the suspended connection for the PID which is updating with a block by anothor pid, so I run the profiler and found out when ever this suspended connection occur, the blocked pid is a select statement on the view (say ActiveEmployees, which is the same as the table but with some where conditions).
Anyone know why a Select statement on the view could cause failure in update. If it is other (like select fails due to update) may be reasonable.
Is there any way for me to make select on a view without locking the table?
PS: I am using the Sql server 2005 and subsonic 2.2.
You might add with(nolock) hint to the select statement in the view if you don't care about accuracy of the returned data (it will return uncommited rows possibly).
We encountered timeouts also when the select statements where scanning a table that other thread was inserting into. I resolved the issue by adding appropriate index that is used by our select.

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