The discipline of Operational and Architectural Management of Database Systems.

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1answer
250 views

Pentaho 4.4 Database connectivity issue

I am getting the following in one of my transformations. I am trying to extract data from SQL server and pushing to mongodb. 2014/04/03 13:11:10 - EMPLOYEE TABLE Input.0 - linenr 700000 2014/04/03 ...
0
votes
1answer
676 views

Oracle Enterprise Manager - Where do I find the error logs?

I'm not familiar with oracle management. The problem is when I try to connect to the enterprise manager through the Web browser I get this error: In english: "Internal Error has occurred. Check ...
0
votes
0answers
54 views

Create replication sql server for DWH [closed]

I have a DWH and I need to make an update once a day from STG Database to DWH I need use replication in SQL SERVER, How I do this?
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1answer
1k views

SQL Server 2012 T-SQL Health Check Script / Stored Proc [closed]

I'm hoping not to re-invent the wheel. I was looking for a routine server side health check script(s) / Stored Proc(s) for SQL Server 2008+ hoping they work on 2012 that provide information in ...
1
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0answers
740 views

Truncating Table Partitions Containing Data and Global Indexes

I have to truncate a partition (392,000 records) of a table with 20.000.000 records. At the moment, I'm making a truncate table and rebuilding indexes. But the table has 37 indexes and it takes 20 ...
0
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0answers
53 views

Every 30 minutes mysql stuck for 20-30 seconds [closed]

I have very strong mysql 5.5 computer (Windows server / AWS) . My CPU ~8% ,Disk IO - 0.5% , ~Connection - 800 binlog_format=MIXED, innodb_read_io_threads=64, innodb_write_io_threads=64, ...
0
votes
1answer
184 views

How to scatter/arrange all the tables in database model (workbench)?

I have around 71 tables and if i open them for creating a model in workbench all overlap as below If i use the auto layout under arrange section then max i can get is as below How to auto arrange ...
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2answers
1k views

Free up disk space on sql server

Assuming I have a sql database server with disk space as follows: D Drive: 10GB (For the MDF file) E Drive: 10GB (For the LDF file) And I have only one database on the server with the following ...
2
votes
3answers
2k views

What are the risks of copying MDF/LDF files without detaching the DB first?

Where DB backups are not available, our support team has been trained to restore using the following steps: Get a copy of the MDF/LDF from a file system backup. Stop the instance. Overwrite the ...
0
votes
2answers
165 views

Is it possible to know how many times a user connected to an Oracle database?

Is it possible to know how many times a user connected to an Oracle database? If possible where we can find this information?
0
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2answers
1k views

Help with SQL Server Error “ad Hoc access to OLE DB Provider 'Microsoft.ACE.OLEDB.12.0'”

So we have an interesting issue where users are receiving the following error when attempting to query a view in SQL Server 2008 R2: Msg 7415, Level 16, State 1, Line 1 Ad hoc access to OLE DB ...
1
vote
1answer
86 views

Difference between sql agent account logged in as NTLM and UPN?

Can someone please tell the difference between a sql agent account logged in as NTLM and UPN? What is the difference if the sql agent account is logged in as: domain\username and username@domain.com? ...
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0answers
53 views

MySQL grant select not working properly 5.1.73-log

I have created new users with GRANTS SELECT but this is not applied and still user have full privileges and can still DELETE, DROP, INSERT. SHOW GRANTS for dbreader; GRANT SELECT ON *.* TO ...
9
votes
1answer
668 views

Why would you use a managed service account rather than a virtual account in SQL Server 2012?

In SQL Server 2012, service accounts are created as virtual accounts (VAs), as described here, as opposed to managed service accounts (MSAs). The important differences I can see for these, based on ...
0
votes
1answer
256 views

How to make up sqlplus login automatically execute a script for Oracle in Linux? [closed]

Some script is invoked automatically want up sqlplus login, don't know what good method.
0
votes
1answer
218 views

How should I config the my.ini(or my.cnf) file for mysql?

Thanks for taking your time to look at my question, and I hope that you can help me with this. I have a Windows Server 2012 server, it has: Memory : 3840MB Ram Processor: Intel(R) Xeon(R) CPU ...
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votes
4answers
103 views

T-SQL: Complete Database in one table

at a relational data model every logical relation is a single table with values and so on. I know someone who is this too much work and he wants to create only one table which contains all. This could ...
1
vote
1answer
69 views

Immigrate to file-per-table mode in MySQL

I have 20 MySQL databases and in each there are about 20 tables. All the data is saved in a file called ibData1. Now I discovered about the file per table mode but if I change the value in the my.ini ...
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0answers
27 views

How to recover data in a MySQL DB?

Log file says: Recently disk space on my VPS got filled up. Now my DB looks corrupted, MySQL error log says: 140319 01:28:57 mysqld started 140319 1:28:57 InnoDB: Started; log sequence number 0 ...
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votes
4answers
216 views

SQL Server 2005 - 2 sets of backups - 2 maintenance plans?

I did my best to search for an answer to this question and couldn't find a scenario quite like this. I'm a fairly new DBA in the sense that I haven't had a ton of training, I basically took the job ...
4
votes
2answers
591 views

Update Statement takes forever to complete [closed]

I have table around 1250000 records, and 80 columns Table Structure CREATE TABLE [dbo].[Table] ( [Column1] [int] IDENTITY(1, 1) NOT FOR REPLICATION NOT NULL, [Column2] [int] NULL, [Column3] [int] ...
1
vote
1answer
39 views

Why Database use Buffer pool for write operation? [closed]

In this case, first we write data in RAM,then same data write in database? Why we need do write operation two time?
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0answers
85 views

Oracle Merge performance

I've a question about the merge performance in oracle. I work in the business intelligence area of a big company and its quite common to have to move millions of records one side to other. The other ...
1
vote
2answers
130 views

Triggers After Insert and After Update - Good Practice

It is a good practice to have a separate trigger for After Insert and another one for After Update or there is no problem in having both in the same logic? Also from a perspective of performance it ...
2
votes
1answer
193 views

Is there any way MySQL can list relationship cardinality between two entities?

I am working on the project where I have to analyse the MySQL schema. As a part of schema information, I want to list down relationship cardinality between different relations. Does MySQL stores ...
0
votes
2answers
173 views

Recovering mysql innodb table from table.ibd backup file

Just practising DB disaster recovery. As per our back up policy, we do complete disk image back ups every half an hour (on our slave server). Now for a scenario, where some how a table has been ...
0
votes
1answer
235 views

how many 'text' column a table could have in mysql? I have this error “Row size too large (> 8126).”

I'm working on a application which is kinda complex to explain how it works. But this is the situation I'm in, ------------------------------------------------------------------------------ FIELD1 ...
5
votes
3answers
280 views

Bad use of Oracle Tablespaces

I have a doubt about the use of oracle tablespaces. I've decided to define for each schema of the datababase two different tablespaces (one for data, and another one for indexes). The problem is that ...
0
votes
0answers
72 views

how to archive old entries from mysql on rds

I have an AWS RDS MySQL DB. I have ec2 instances and an s3. What I would like to do is only retain 60days old data and archive the rest. I'm still new at this so I'm not really sure what to do. What ...
0
votes
0answers
16 views

ASE 15.03 mixed data and log segements [duplicate]

I have a DB with mixed data & log segments. I also have some log on data device & the other way too.. The target is to have the data & log segments aligned properly , please guide me how ...
1
vote
5answers
791 views

How to determine why a MySQL server has become slow and requests sometimes time out?

I'm working on my first project that makes heavy use of a MySQL database and am struggling to understand performance issues I'm having. Most of the time, responses are returned quickly from the ...
0
votes
1answer
918 views

I have mistakenly deleted Datafiles.

In my production server I have mistakenly deleted datafiles. When I am trying to open the database I am getting an error. The files are not important but the database is not opening up. SQL> ...
0
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0answers
45 views

MySQL beginner in troubles

My MySQL knowledge isn't really good. However, I tried to move my websites media folder to an other location and afterwards wanted to update the links in my database: UPDATE wp_posts SET ...
0
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0answers
423 views

Firebird-Time Interval- between 2 Dates

I try to select the period of employment for the members in a Company. Example: Date of join: 01.01.2001 Today: 27.02.2014 Now, I want this: 13 years, 1 month and 27 days I have a Statement which ...
-2
votes
6answers
766 views

Missing import function in SQL Developer like MS Access has

At my work we used to use MS Access now we are forced to use SQL developer to create queries and export the data. Details: We can only query to the database We cannot create a new database We use ...
1
vote
1answer
1k views

How to grant rights for a user in DB2 Express?

I have installed DB2 Express on a PC. My user is not an administrator user, however as far as i know, it is possible to grant a user rights, so he can create/delete/modify a database. I have ...
0
votes
0answers
12 views

Tables not created in default tablespace postgresql

I have create a database with default tablespace 'TEST1' instead of pg_default. the owner of the database and the tablespace is postgres. I log in to the database with postgres -d test create a table ...
3
votes
1answer
994 views

Confused about load balancing and horizontal scaling in postgresql [closed]

Please correct me if I am wrong but I guess handling more requests and load by adding more machines or balancing the load between multiple servers is horizontal scalling. So, if I add more servers, ...
2
votes
1answer
226 views

db2 performance issue - large number of IOPS how to determine problem?

DB2 database is on storage. We are using 9.7 Storage administrators reported that today database was doing 5000 IOPS (during past days average number was 300 IOPS). Those are disk operations from ...
0
votes
2answers
82 views

How to store a database table in multiple disks with assigned ratio?

I am going to deploy database tables to multiple disks. My database layout would be like following example: There are 3 tables (Customer, Order, Product) and 4 disks (disk_A, B, C, D). Customer: 5% ...
0
votes
1answer
275 views

What is a bucket in database? [closed]

I was implementing a code that involves a database and buckets. Just wanted to ask what is bucket and can someone describe it with an example? Thanks!
2
votes
2answers
2k views

Script to see running jobs in SQL Server with Job Start Time

how to write script to see running jobs in SQL Server with Job Start Time? SELECT sj.name, sja.run_requested_date, CONVERT(VARCHAR(12), sja.stop_execution_date-sja.start_execution_date, 114) ...
1
vote
1answer
303 views

ORA-12541 error while connecting to oracle express edition 11g

My oracle express edition was working some months earlier. I dont know what i changed in the system, now I could not connect to it. I tried logging in from sqlplus as sysdba and altered the accounts ...
1
vote
2answers
357 views

Move a huge databases from one SQL Server to another

I have customers databases located on my SQL Server 2008 machine. The size of these databases are around 300 GB. I would like to move them all to another SQL Server 2008. Is there a way to shrink ...
0
votes
1answer
238 views

Which MongoDB administration UIs offer a table view (OS X)?

The only admin UI we found that offers a table view is MongoVue, which is only available on Windows. We're on Macs with OS X. Do any exist?
0
votes
0answers
63 views

SQL Server A network-related or instance-specific error

I have a windows service that performs a lot of hits to database. Sometimes the database connection is down and I got exception "A network-related or instance-specific error". I got this behavior on ...
1
vote
2answers
3k views

Create database fails with Microsoft SQL Server Error 5133, Operating syste, error 5 (Access is denied)

I just installed SQL server 2012 on Windows 2012 today. After the install, I changed the database settings to create database files in f:\mssql instead of the default. i verified the confired and ...
0
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0answers
67 views

InnoDB crashes frequently

My Innodb Engine is getting crashed frequently. I could not find the reason behind this. This is the error log: 140129 9:22:49 [Note] Plugin 'FEDERATED' is disabled. 140129 9:22:49 InnoDB: The ...
0
votes
1answer
71 views

Rotate Postgres log at 5GB

How to make postgres 9.1 log to have maximum size 5GB and to be circle when comes to 5GB ? At the moment my log file is over 500GB. /var/lib/postgres/
3
votes
2answers
4k views

SQL Server Connectivity Issues

I am getting the below error on occasion. Maybe every 30mins or so. I am not sure how to track what is causing the issue. I think it could be a Network problem as there are disk backups running as ...