SymmetricDS/Lobby

Zalman Lew

@zalmanlew

What is the db.driver for MS SQL Server? Would it be com.microsoft.sqlserver?

Zalman Lew

@zalmanlew

I'm trying out the demo, trying to run

../bin/symadmin --engine corp-000 create-sym-tables

I'm getting an error

Exception in thread "main" java.lang.NoClassDefFoundError: Could not initialize class oracle.jdbc.OracleDriver

(corp-000 is using sybase drivers )

joshahicks

@joshahicks

@zalmanlew you need to install the Oracle module

symadmin module install oracle

Zalman Lew

@zalmanlew

@joshahicks thanks, I tried that but got an error

ERROR: Invalid module specified

joshahicks

@joshahicks

@zalmanlew the demo uses H2 by default you may need to remove your engines files and start clean. What database types are you trying to replicate

There is a pro free trial for 30 days that might help you walk through the connection setup if you are having issues creating the engine files on your own

joshahicks

@joshahicks

@zalmanlew also are you running Java 8 or higher

Zalman Lew

@zalmanlew

I managed to download the oracle drivers and got it working. Now I'm just having trouble connecting to my Sybase source.

I'm trying to connect Sybase >> MS SQL

Zalman Lew

@zalmanlew

I'm getting a Connection refused error; I'm able to connect to Sybase via the CLI and run commands

isql -Usa -P{pass} -S{server}

joshahicks

@joshahicks

have you tried a pure JDBC client like Squirrel or DBeaver

Zalman Lew

@zalmanlew

@joshahicks yep, same issue. I think I'm doing something wrong in my Sybase configuration - but no idea what.

Zalman Lew

@zalmanlew

@joshahicks I managed to get connected using DBeaver on my Mac (through an SSH tunnel). However I'm still getting the connection refused error when running the following command

../bin/symadmin --engine corp-000 create-sym-tables

this is the configuration of corp-000 (yes, the actual database name is databasename)

db.url=jdbc:sybase:Tds:localhost:5000/databasename

I was able to successfully connect using jConnect as well as jTDS from DBeaver

Zalman Lew

@zalmanlew

Worth noting that SymmetricDS is installed and being run locally (on the machine with the Sybase install)

Zalman Lew

@zalmanlew

@joshahicks after hours of messing around, I managed to get it working by changing the DB to listen on 127.0.1.1 instead of localhost (note the 1 instead of the common 0).

I'm facing an issue now when trying to create-sym-tables - it's giving an error

java.sql.SQLException: JZ0SB: Parameter index out of range: 1.

Any ideas?

Zalman Lew

@zalmanlew

Also, what is the official db.driver for SQL Server? Would it be com.microsoft.sqlserver?

joshahicks

@joshahicks

@zalmanlew we use to ship the JTDS driver but have swithched to the MSSQL one with the latest releases finding it faster and more stable

3 replies

Are you using SQL Anywhere for the other issues above by the way

1 reply

joshahicks

@joshahicks

Could you send us a log

1 reply

susana prado

@susanap23640384_twitter

Hola alguien sabe por que no puedo escoger master o node

joshahicks

@joshahicks

@susanap23640384_twitter ¿Te refieres a la consola web? Cambiamos la redacción. "Configurar nuevo .." = "Maestro" y "Unirse a existente..." = "Nodo".

susana prado

@susanap23640384_twitter

Al darle clic en Open Web Console la siguiente pantalla no me deja escoger master , o nodo , dice que existe un error inesperado

joshahicks

@joshahicks

Mire logs/wrapper.log y vea qué error está teniendo al iniciarse. El siguiente lugar para verificar es logs/symmetric.log.

adamitsch

@adamitsch

I am using android client example and get this error when trying to transfer data (MSSQL)
https://pastebin.com/VS5Q0pm6

adamitsch

@adamitsch

I have tried disabling monitor job but it didn't help

adamitsch

@adamitsch

on server it only keeps registering node and nothing else

jmckgenerali

@jmckgenerali:matrix.org

[m]

Hi, there seems to be a bug in SymmetricDS. I've installed the latest Pro version (trial) on an ubuntu VM. It doesn't let me connect to Oracle DB in Cloud using an oracle wallet. https://i.imgur.com/Ue0vERN.png

image.png

what could be the cause?

image.png

Oracle SQL Developer connects successfully (tried from my windows desktop):

jmckgenerali

@jmckgenerali:matrix.org

[m]

@zalmanlew:

adamitsch

@adamitsch

Jyoti D

@jyotid1815_gitlab

hi,

SymmetricDS is taking a lot of time to sync the data. I'm able to see in logs the data is in process to sync . In log it is showing data of last 3 to 4 days is still pending to sync. Please help me out.

1 reply

jmckgenerali

@jmckgenerali:matrix.org

[m]

https://www.symmetricds.org/issues/view.php?id=5361

I've created a bug report regarding the jdbc issue. It includes logs with stack traces.

joshahicks

@joshahicks

@jmckgenerali:matrix.org thank you for submitting the issue we are trying to release 3.14 so that has been the focus most recently but we will look at it soon

joshahicks

@joshahicks

@adamitsch it looks like an issue with Android or a class loading issue with apache commons jar. Once we get this 3.14 released we will try to take a look. Please let us know if you find anything on your side that fixes it

@jyotid1815_gitlab do you have any nodes offline? Nodes that are registered but not actually running or connecting? This would backlog the data. Also make sure routing and purge jobs are not throwing any errors in the logs. Do you have any batches in error

Jyoti D

@jyotid1815_gitlab

Nodes are not offline. There is no error in the logs. The outgoing batches showing the status NE.

joshahicks

@joshahicks

@jyotid1815_gitlab is the target set up to pull these batches ?

adamitsch

@adamitsch

@joshahicks Any idea how to debug this? I have tried different with different release versions but just encountered other errors.

Jyoti D

@jyotid1815_gitlab

Yes, target set to pull batches. right now out of 150000 only 4000 data is synced in the table. But error log still showing one entry.

veripolis-ms

@veripolis-ms

milliseconds are not synced in datetime(6) fields.

dikum

@dikum

@joshahicks Please when I enter a new record, it syncs to the target node successfully, also works when I update such a record. But when an older record is updated, it does not sync. Is there a possible cause for this?

mitpjones

@mitpjones

Hi, I am upgrading from 3.8 to 3.13 and noticed that the entries in the sym_outgoing_batch table for channel_id = 'heartbeat' are being inserted but when the target node is offline that the sym_outgoing_batch.status of the previous entries are no longer updated. Hence when the node comes back online it can have many 'outdated superfluous' heartbeat entries that must be synched rather than just the most recent. I noticed that in revision 0003883 5/03/19 that the PushHeartbeatListener.heartbeat() method was changed from

        log.debug("Updating my node info");
        engine.getOutgoingBatchService().markHeartbeatAsSent();   <---- this has been removed
        engine.getNodeService().updateNodeHostForCurrentNode();
        log.debug("Done updating my node info");

        log.debug("Updating my node info");
        if (engine.getOutgoingBatchService().countOutgoingBatchesUnsentHeartbeat() == 0) {
            engine.getNodeService().updateNodeHostForCurrentNode();
        }
        log.debug("Done updating my node info");

Is there some other functionality that replaced the updating of the 'outdated' sym_outgoing_batch heartbeat entries that I need to configure for 3.13 or is it now intended for these to be synched?

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