4
votes
1answer
1k views

I/O is frozen on database databasename

On SQL Server 2005 log report, everyday I receive the following message: I/O is frozen on database databasename. Is it serious ? How to resolve it ?
7
votes
1answer
1k views

List Prepared Statements

Anybody know how I can list the prepared statements that are in a SQL Server instance?
1
vote
1answer
3k views

ORA-00379 no free buffers

I'm trying to do collection_manager in OVPI but I'm getting db error ORA-00379 no free buffers available in buffer pool default for block size 32k oracle 10.2 Thanks for any help in advance
5
votes
3answers
8k views

Maximum table size for MySQL database server running on Windows (NTFS) Table type InnoDB

I need to design database to store information contained in millions of log files generated by devices on trial on network. I have designed 5 different tables to store log file information. But, as ...
0
votes
4answers
584 views

Are there any in-memory hybrid databases available?

I am looking for a database that is - Relational (Not NoSQL). Has an in-memory store. Has disk-based backing storage. I want to set up a system where entire contents of the disk are replicated in ...
1
vote
1answer
150 views

Default Schema Problems on server

When i connect to SSMS on my server through remote desktop and query my database using: SELECT * FROM [sys].[database_principals] WHERE [principal_id] = USER_ID() I am getting the correct results ...
1
vote
1answer
1k views

2 similar queries in large sql server table - 1 takes too long

I have a huge table in my database that contains distances between cities. This enables my application to find nearby cities around the world when a starting city is selected. It contains 4 columns ...
3
votes
1answer
1k views

Data Collection reports fail because login is from an untrusted domain

I've set up a data warehouse and Data Collection according to BO. Reports are generated properly when running them in Management Studio running on the server but fail when they are run from Management ...
1
vote
2answers
778 views

SQL Server 2012 Data Warehousing Overall Flow [closed]

I am studying Data Warehousing in SQL Server 2012 I am attempting to learn the various tools included by practicing on the different tools separately. I have practiced with: AdventureWorks ...
4
votes
4answers
8k views

mysql insert into indexed table taking long time after few million records

I have a table like this CREATE TABLE IF NOT EXISTS `dnddata` ( `numbers` varchar(10) NOT NULL, `opstype` char(1) NOT NULL, PRIMARY KEY (`numbers`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 ...
2
votes
2answers
4k views

employee record data model

I am new to mysql and I have created a data model for keeping employee record. I am using relationship, Please tell me is this data model is correct as i want. I am also including EER diagram. This ...
1
vote
2answers
3k views

--replicate-wild-ignore-table doesn't work?

According to the document about the replication and temporary tables, I'm setting --replicate-wild-ignore-table option to the %.norep% to prevent temporary tables from being replicated: ...
1
vote
2answers
1k views

Can't create indexes on really large table!

I have a table with over 300 Million rows in it. When I try to create an index on the table I get the error message below. Msg 1105, Level 17, State 2, Line 3 Could not allocate space for ...
1
vote
1answer
597 views

Failed to restore mysql database with zmanda

I want to setup a slave from my backup version of mysql using zmanda (it's a full backup). I've followed this guide. Result of mysql-zrm-reporter backup_set backup_date ...
2
votes
0answers
88 views

How Much Overhead Does Web Sync Add?

I am running merge replication in SQL2012 using web sync. Has anybody done any experiments to compare the performance of web sync to connecting to replication using a straight TCP/IP connection? ...
1
vote
0answers
403 views

How To Speed up Merge Replication [closed]

I am running SQL2012 merge replication on a netbook using SQL Express as a subscriber. The netbook has 1GB of RAM. The replication process works quite well, but it is when it comes to applying the ...
4
votes
1answer
374 views

SQL Server Workspace Memory

Does Workspace memory (part of buffer pool) is limited for only Hash Join, Sort etc. only? If I have a query that does use a nested loop join (wihtout a sort or hash), would it not use workspace ...
5
votes
1answer
798 views

Denormalized table designs in normalized database?

There was a discussion between the developers and DBA's last week on set of tables that the developers were creating with more than 400 columns in our OLTP environment with combinations of VARCHARs, ...
3
votes
1answer
168 views

Merge replication with PDAs AND P2P replication between servers?

We're currently building a setup to scan tickets at an event. We plan on having 2 servers at each entrance but can't have a local link between the two. We have scanners (sqlCE) and half of them are ...
7
votes
3answers
2k views

Dealing with CXPACKET waits - setting cost threshold for parallelism

As a follow-up to my previous question on perf troubleshooting a Sharepoint site, I was wondering if I could do something about the CXPACKET waits. I know the knee-jerk solution is to turn off all ...
6
votes
1answer
663 views

Attempting to tune a Sharepoint site using SQL Server Waits and Queues

I'm pretty new to this performance tuning with Waits and Queues thing - fascinating, but also not always all that intuitive... Right now, a customer of mine has a SQL Server 2008 64-bit Enterprise ...
4
votes
1answer
174 views

repeatable read and nolock

Does anyone know what the net effect of having a block of t-sql with a transaction isolation level of repeatble read and then inside having a select with nolock. Does the nolock become invalid ...
1
vote
1answer
340 views

Questions about PostgreSQL backup/restores

I've inherited a large PostgreSQL 8.4.7 database that is currently not being backup at all. The database itself I believe is around 100GB, I've been reading about the different methods to backup this ...
5
votes
3answers
3k views

BUILTIN\Administrators accidently removed

Hi, so recently when trying to fix another bug within my sql server 2008 R2 db I removed the BUILTIN\Administrators login from sysadmin. Now it will not let me change anything winthin the database. ...
1
vote
1answer
602 views

Is PostgreSQL 9.2 autovacuum sufficient for a busy table?

I have one table on a PostgreSQL 9.2/PostGIS 2.0.1 database: CREATE TABLE ch02.markers ( ff_id SERIAL PRIMARY KEY, col1 boolean, col2 smallint, created_at timestamp, lat double precision, ...
3
votes
1answer
1k views

Query taking long on table with low record count

I have an Oracle flat table that grew to just below 800MB. The table was truncated and new records are being inserted. Currently there are <40 records in the table but a select * takes >30secs. ...
2
votes
2answers
3k views

Advanced Replication vs Oracle Streams

I'd like to know what is advantages of Streams over Advanced Replication. I wanted to use updatable materialized views on my project, but on one forum I read comment that if we don't use very old ...
9
votes
3answers
3k views

Used Memory not freed up after a SQL BULK Insert / BCP Export

I have created a very basic SQL table as following CREATE TABLE [dbo].[TickData]( [Date] [varchar](12) NULL, [Time] [varchar](12) NOT NULL, [Symbol] [varchar](12) NOT NULL, [Side] [varchar](2) ...
2
votes
2answers
6k views

remove duplicate rows in mysql table that does not contain primary key

I have a table item having just one column name:- name ----- toys shirt mobile Shirt speaker Toys .... .... I am trying to delete duplicate rows except one duplicated record with the help of below ...
0
votes
2answers
4k views

Oracle database link to MySQL database on RedHat Linux

I have an Oracle 11g database on a RedHat server and also have MySQL database on another RedHat server. I want to create a link to the MySQL server from the Oracle which allows me to execute queries ...
2
votes
1answer
2k views

MySQL's “slow query” log: strange “Query_time”

I need some help understanding what's going on with my "slow query" log in MySQL. I have set set global long_query_time=3 and yet this is what I see in the slow query log: # Time: 120723 9:04:38 ...
2
votes
1answer
359 views

Problem with shortest distance calculation in PostGIS

While working with PostGIS pgrouting, for calculating the distance between two roads (lines) I'm using the shortest_path function. The logic is based on start_point(Start_id) and end_point(end_id) ...
-1
votes
1answer
503 views

Multi-Tenant Database Schema Creation [closed]

I need to create a Multi-tenant schema. I have searched a lot, but I haven't got any concrete solution to create one. Any example would be highly appreciated. I'm using SQL-SERVER 2008. I need to ...
5
votes
1answer
7k views

SQL Server has encountered 1 occurrence(s) of cachestore flush

On one of our production server log files, the following message is being observed on daily basis. What does it mean? Is it a serious issue? SQL Server has encountered 1 occurrence(s) of ...
0
votes
2answers
143 views

Import data problem in SQL Server 2008

I want to import data from one database to another. On the destination database, I don't have permission to restore a backup file to it, so I have only one option which is to import data. I used the ...
0
votes
3answers
516 views

Is adding rows better then adding columns in case their value is not consistent?

In my project I have a table of customers, each customer has his own special price for each product, It's a small business and there are currently about 5 products. The manager says there might be ...
5
votes
2answers
6k views

Need suggestions for best way to archive MySQL (InnoDB) tables

Problem: I have two fairly large tables. A 'wall' table for messages between users with 9 million rows at 2 GB and a 'chapter' table at 2 million rows and 18 GB. I want to keep the number of active ...
1
vote
1answer
590 views

Error in SQL syntax

SELECT CONCAT_WS(' ',child_fname,child_sname) AS 'Child Name' , child_gender AS 'Gender' , child_dob AS 'DoB' , COUNT activity_name AS 'Activities name' , CONCAT_WS(' ', ...
3
votes
2answers
8k views

Troubleshooting Oracle ORA-08103 - object no longer exists

I am getting this error from Oracle intermittently. A trigger is truncating a partition from a partitioned table while a long-running query is running against it. Since I'm truncating a different ...
9
votes
4answers
18k views

How to get the most out of MySQL on a QuadCore machine with 16 GB of RAM?

I'm running a MySQL 5.5 server on my workstation for scientific data analysis and wonder how to configure MySQL in order to get the most out of it performance-wise. The types of query that I typically ...
3
votes
1answer
462 views

ETA: translate Oracle SQL queries to MySQL

task: replace Oracle 11g with MySQL current setup: Oracle 11g SE One about 80 tables stored procedures, PL/SQL are in place but out of scope for this question client applications do not use a ...
2
votes
0answers
316 views

The time stamp counter of CPU on scheduler id 13 is not synchronized with other CPUs

On one of our production server, SQL Server log is continuously showing the following error: The time stamp counter of CPU on scheduler id 13 is not synchronized with other CPUs. What does it ...
2
votes
0answers
216 views

Can't access a specific database from phpMyAdmin

I've installed WAMP on a computer some months ago. Now I'm trying to use it and I was trying to surf the databases using phpMyAdmin. So I went to localhost/phpmyadmin and it showed me the databases. ...
3
votes
1answer
76 views

Merge queries into one

The following 2 queries are working as expected and they show the count. Is it possible to merge them into single query? I need sum_hits columns to be part of the rest of the column shown in the ...
2
votes
1answer
732 views

How to troubleshoot COPY FROM inserting less rows then expected?

I have a CSV (tab-delimited in fact) file with 7,590,051 lines, according to wc -l, which I want to import using COPY FROM. I removed the table's primary key, so it has no constraints. I ran COPY ...
5
votes
3answers
14k views

Understanding Oracle's ALL_TAB_COLUMNS

I'm new to Oracle and database administration in general. As context, I want to create a Java class that will give me the information I would get using DESC SOME_TABLE. I cannot find any specific ...
4
votes
1answer
478 views

NuoDB with Amazon S3

I think about developing my new mobile and web app against NuoDB. I believe in their technology. The thing that I care the most is backup and restore in case of data corruption and read / write speed ...
3
votes
1answer
2k views

Good articles for SQL Server Health Check specifically for Web Applications

I am searching for Database Health check articles specifically for a web application back-end server and SQL Server 2005/2008. My current checklist includes: - Index Fragmentation - SQL Server ...
5
votes
1answer
171 views

Security implications of guest account and database chaining on sql server?

I have another database Ydb accessing data in database Kdb. They both have the same owner. In order to allow cross database chaining, it seems I need the guest user to be enabled in Kdb. I did so ...
2
votes
2answers
134 views

CPU or Page Reads

While comparing query performance should i go for CPU values or Page Reads. On live server (with better hardware) a query is showing different CPU when i test it on my local machine. But Page Reads ...

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