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Query Oracle Database

Votes:

0

Hello,

I have been using several monitoring tools for production servers so far and I must admit, I am very satisfied with PRTG. I am still testing it though and we might buy it very soon.

More or less we are interested in Database and WMI Sensors. I have been trying to setup query on oracle database, but without luck so far. Basically, idea for query is to check if there are blocking locks on database with:

select * from v$lock or select * from v$lock where block > 0

Basically, what I did is that I several times produced blocking lock on my test database and used above queries on database SQL-Expression. Tried with all possible options (Process numerical result, Process string result...) But no luck :(

I always receive this alarm which does not satisfy my need. Could not perform query: Could not convert variant of type (Array Byte) into type (Double)

Even, when I produce lock I am able to manually connect to database and query/see blocking locks on database.

Is there any possible solution that you could suggest?

Thank you

blocking-lock oracle query sql

Created on Sep 26, 2011 3:14:44 PM



Best Answer

Accepted Answer

Votes:

0

Hello again,

Thank you for you help. I was able to test and produce block with your help.

select block from v$lock where block > 0 Process numerical result Condition "Warning" Above 0

Still need to finish some more testing. Anyway this works like a charm.

Regards

Created on Sep 27, 2011 8:40:01 AM



3 Replies

Votes:

0

Hello,

the result from these queries can't be handled by PRTG. You need to use a more precise query which produces one field in order to to use the result as sensor result.

best reagards.

Created on Sep 26, 2011 4:36:42 PM by Torsten Lindner [Paessler Support]



Votes:

0

In your case a 

select count(*) from v$lock

or

select count(*) from v$lock where block > 0

will do the trick

Created on Sep 27, 2011 7:09:44 AM



Accepted Answer

Votes:

0

Hello again,

Thank you for you help. I was able to test and produce block with your help.

select block from v$lock where block > 0 Process numerical result Condition "Warning" Above 0

Still need to finish some more testing. Anyway this works like a charm.

Regards

Created on Sep 27, 2011 8:40:01 AM




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