Can you still connect with Studio on the same machine ?

Apparently, the factory.Connect is failing, what is the value of ConnStr ?

You could change the line by 

ConnStr = factory.ConnectDlg()

which will display a dialog with options to login, or give you an error if it cannot reach Caché.

The cconsole.log should also give you a clue why it cannot mount the database.

Make sure the file cache.lck is not present : it indicated the cache.dat is mounted by (another) Caché instance.

Also verify the block size of the cache.dat : nowadays it is default 8Kb, but in some previous versions, you could specify other block sizes, and if it is the case, you need to allocate global buffers that are minimum that size.

In the real world, there are lots of programs still using this style, every developer using Caché Object Script should be able to read this and understand the side-effects, pitfalls, even if we recommend to not use it anymore... 

Hi Scott,

Here is some code that stores the sizes of all globals for a database, if you create an entry in the task manager to run this code every day, you will see in the global  ^tempSize which globals grow faster than others :

do ##class(Utils.Database).GlobalSize()

(please change the code to store the results in a global that does not exist, or better, in a persistent class)

Class Utils.Database
{

ClassMethod GlobalSize(dir As %String = "")
{
   If dir="" Set dir = $zu(12,"") ;current directory
   #Dim today as %Integer = $zdate($H,8)
   #Dim sqlStatement as %SQL.Statement = ##class(%SQL.Statement).%New()
   #Dim sqlResult as %SQL.StatementResult
   #Dim sc as %Status = sqlStatement.%PrepareClassQuery("%SYS.GlobalQuery","Size")
   Set sqlResult = sqlStatement.%Execute(dir,,,,,1) ;1=fast mode
   While sqlResult.%Next() {
      set ^tempSize(sqlResult.%GetData(1),today)=sqlResult.%GetData(2) ;^tempSize(yyyymmdd,global)=allocated blocks
   }
}

}

Yes, same here, i also use following code a lot:

Open <some device>:"R":0 Else  Write "could not open device" Quit

I always use Else on the same line just after the command that changes $test,

having too much instructions between them creates problems. 

Besides all that is mentioned, the If without braces has a side-effect that the If with braces does not have : it affects the system variable $Test.

USER>set $test=0
 
USER>w $test
0
USER>if 1=1 { write "one" }
one
USER>w $test
0
USER>if 1=1 write "one"
one
USER>w $test
1
USER>

Not important, only if you use the ELSE (legacy) command...

Guessed right : found out that i still have a wife and two kids, ... bummer ;)

Hi Arun,

Look at this article : https://community.intersystems.com/post/machine-learning-spark-and-cach%...

If you want to analyse text for a chatbot, iKnow could be handy, search for iKnow keyword in DC or in the docs.

Hi Laura,

Can you look at the directory where your cache.dat is located.

If a database is mounted, there should be a cache.lck file with the root directory  and name of the Caché that mounted it.

If the root/name is not the same as your Caché system, it will not mount it as RW.

Best is to stop Caché (or dismount the database), remove the cache.lck, and mount/start Caché again.

(If you are sure that this DB is not used by another Caché).

You will always need to add the property and an entry in the storage section of the mapped class.

If you include the class source and global entry, we can help you in more detail.

put your code in a try {  } catch { } block to prevent that Cache will not start if there are errors in your code