What is the equivalent to Simple/Full Recovery mode in SQL Anywhere? How do I switch between the recovery models? I have a database that I would like to change to simple recovery mode during an upgrade, so that the log file doesn't blow up, flood our write cache, etc.
I have tried looking all over for this, but maybe I'm using the wrong wording, and recovery models don't exist in SQL Anywhere.
Thanks in advance!
I do not believe there is such a concept in SQL Anywhere.
You may want to ask your question at http://sqlanywhere-forum.sap.com/, a Q&A site specifically for SQL Anywhere.
Disclaimer: I work for SAP in SQL Anywhere engineering.
Related
I want to create table automatically using new table option in oracle SQL developer,but that option is disabled in my tool.
Can any one please help me out in this issue.
Please find the below image highlighted with red mark for your better understanding.
Thanks in advance.
To quote Jeff Smitth:
SQL Developer is built by Oracle, for Oracle. It’s the database IDE.
...
But, SQL Developer is also ... a 3rd party database migration platform.
...
Since we support migrations from these other database platforms, wouldn’t it be neat if SQL Developer could connect and query those 3rd party databases too? Surprise, surprise – that’s exactly what we DO do today.
What ‘Support’ means
You can connect to, browse, and query (SELECTs only) SQL Server, DB2, Access, MySQL, and Teradata.
What ‘Support’ does NOT mean
providing debuggers
delivering database administration features
write access to the database
Sound a little harsh or spartan? Going much further in any of these areas would just open a big ole can of worms, and we’re committed to providing an optimal experience for the Oracle database. But, since we already support these limited features, there’s no real reason to hide it.
That post is from 2012, but as far as I'm aware is still mostly true.
Since creating tables would count as write access and a DBA feature, it isn't a matter of enabling the option for your MySQL database, it isn't supported. This is an area of functionality that only applies to Oracle databases. (Even though Oracle Corp. owns MySQL... this means the Oracle RDBMS).
I am naive in mainframe and my question would sound silly. However, I want to know where do we write or issue db2 commands,say diplay database command. Under which option do we issue these commands. Also, how do we find which database is active? This question sounds weird, however, the same was asked to me.
IBM has an Info Center article about where you can issue DB2 commands on the Mainframe. However, if you're not familiar with the Mainframe in general, it may not be all that useful to you.
As #cschneid recommends, you may want to ask around in your employer if there is any expertise on the subject. Otherwise, you need to get some training from somewhere.
There is a useful DB2 tool on the mainframe called SPUFI which can execute SQL statements.
https://www.ibm.com/support/knowledgecenter/en/SSEPEK_11.0.0/apsg/src/tpc/db2z_executesqlspufi.html
There's also a DB2 Admin Tool as well.
Hi i have configured the basics of cruise control to make releases, and automated nunit test using just MSBuild. Now i'm wondering if is possible to deploy/versioning databases with this?
I'm a beginner at CCNet .So if is possible some suggestions or tutorials (if there are) . Also if someone knows a free tool for database deployment/versioning let me know.. i will be grateful.
Thanks in advance
Hugh
It isn't free but SQL Source Control from RedGate can do what you're looking for, assuming it's a SQL Server database. It has a commandline interface that you can use in CCNet tasks. The easy approach of just migrating up is... easy, the changes are applied to your database schema / data. There was an issue with v2x of the tool that they've overcome with 3, which is that if you were to rename a table column then it would delete the column and create a new one with the right name. Obviously that's quite a big problem if you've got data you want to keep, so with v3 there's the concept of migrations and this allows you to specify alter scripts so instead of dropping the column you could script the change non-destructively.
As far as I know, at this time, they don't have anything that allows you to roll back your version.
Otherwise you could take a look at database migration tools, there seemed to be some promise for these in .Net at least. There is also this post that has some other tools (again for .net) and then there's this https://stackoverflow.com/search?q=database+migration+tool which is not restricted to any language but is general database migrations
If you're still looking for ways to version and migrate databases, one such tool is dbdeploy.net . I've hosted it on github after forking it and doing some work. Latest version is fully up to date and has some interesting features (done by someone who also uses it and sent a pull request).
On the postgreSQL's wiki, on the "Replication, Clustering, and Connection Pooling" page ( http://wiki.postgresql.org/wiki/Replication,_Clustering,_and_Connection_Pooling) , it shows the following example on replication's requirements:
"Your users take a local copy of the database with them on laptops when they leave the office, make changes while they are away, and need to merge those with the main database when they return. Here you'd want an asynchronous, lazy replication approach, and will be forced to consider how to handle conflicts in cases where the same record has been modified both on the master server and on a local copy"
And that's pretty much my case. But, unfortunatelly, on the same page, it says: "(...) A great source for this background is in the Postgres-R Terms and Definitions for Database Replication. The main theoretical topic it doesn't mention is how to resolve conflict resolution in lazy replication cases like the laptop situation, which involves voting and similar schemes."
What I want to know, is where can I find material on how to resolve this kind of situation, and wich would be the best way to do this on PostgreSQL.
I will have to check into RubyRep but it seems like Bucardo might be a more widely supported option.
Gabriel Weinberg has an EXCELLENT tutorial on his site for how he uses Bucardo. The guy runs his own search engine called DuckDuckGo and there are quite a few tips and tricks that are optimized for his use cases.
http://www.gabrielweinberg.com/blog/2011/05/replicating-postgresql-with-bucardo.html
Just answering my own question, if anyone ever finds it: I'm using Rubyrep http://www.rubyrep.org/ and it's working.
I have found a lot of topics about stress-testing web application.
My goals are different, it's to test only database (sybase sql anywhere 9).
What I need:
Some tool to give a diagnostic of all sqls and find a bottleneck. I wish I could macro-view the entire system easily.
Best practices to design/build a good sql queries.
The system issues are:
20GB database size.
2-5 request per second
Thousands sql spread in the code (this messy can be solved only rewriting the system).
The quickest way would actually be to upgrade your SQL Anywhere to v10 or (better) v11, as the latest releases include a complete performance diagnostic toolset. See the documentation here for more details.
several open source tools are listed here:
http://www.opensourcetesting.org/performance.php