So I have a sqlite database. My game (C#) is able to open it and run it quite nicely. However, for maintainability and potential conflict reasons, I would like a more manageable format. Our project manager suggested Liquibase. I'm not sure if it's just out of date or what, but it will NOT convert for me, and I'm not sure why. Here's what we got:
running on windows 8.1
liquibase version 3.3.0 (http://www.liquibase.org/download/index.html)
sqlite database made using sqlite manager demo version 4.3.5 (http://www.sqlabs.com/sqlitemanager.php)
java version 8 update 25
sqlite-jdbc-3.8.7 (https://bitbucket.org/xerial/sqlite-jdbc)
The command I enter is...
liquibase --classpath=sqlite-jdbc-3.8.7.jar --driver=org.sqlite.JDBC\
--url="jdbc:sqlite:GameData.sqlite" --changeLogFile=gamedb-canges.xml\
--username=username --password=password generateChangeLog
and the error I get is...
Unexpected error running Liquibase: liquibase.exception.DatabaseException:
liquibase.exception.DatabaseException: java.sql.SQLException: [SQLITE_ERROR]
SQL error or missing database (near ")": syntax error)
I'd try removing the quotes around the URL. You can also include --logLevel=debug on the command line to get better diagnostics.
"SQL error or missing database" is an error message that comes from the SQLite db.
Try to add a full path to the sqlite db like:
--url="jdbc:sqlite:C:\myPath\GameData.sqlite"
Related
I have a dataframe of 10M rows which needs to be uploaded back from R to Vertica Database.
The DBwrite() function from DBI is running into memory issues and I have tried increasing memory to 16g by
options(java.parameters = c("-XX:+UseConcMarkSweepGC", "-Xmx16g"))
Still the process is running into memory issue. I am planning to use bulk copy option of vertica to copy the csv file to create the table.
I have created an empty table on vertica
When I am executing the query
dbSendQuery(vertica, "COPY hpcom_usr.VM_test FROM LOCAL \'/opt/mount1/musoumit/MarketBasketAnalysis/Code/test.csv\' enclosed by \'\"\' DELIMITER \',\' direct REJECTED DATA \'./code/temp/rejected.txt\' EXCEPTIONS \'./code/temp/exceptions.txt\'")
I am running into this error.
Error in .verify.JDBC.result(r, "Unable to retrieve JDBC result set", :
Unable to retrieve JDBC result set
JDBC ERROR: [Vertica]JDBC A ResultSet was expected but not generated from query "COPY hpcom_usr.VM_test FROM LOCAL '/opt/mount1/musoumit/MarketBasketAnalysis/Code/test.csv' enclosed by '"' DELIMITER ',' direct REJECTED DATA './code/temp/rejected.txt' EXCEPTIONS './code/temp/exceptions.txt'". Query not executed.
Please help with what i'm doing wrong here.
Vertica also provides STDIN option aswell. Link
Please help me how can I execute this.
My Environment.
CENT OS 7
R 3.6.3 (No R Studio here I have to execute this from CLI)
Tidyverse 1.0.x
Vertica driver 9.x
System 128GB Memory and 28Core system.
Your problem is that you fire dbSendQuery() , which lives with a following dbFetch() and a final dbClearResult() - but only for query SQL statements - those that actually return a result set.
Vertica's COPY <table> FROM [LOCAL] 'file.ext' ... command is treated like a DML command. And for those - as this docu says ...
https://www.rdocumentation.org/packages/DBI/versions/0.5-1/topics/dbSendQuery
.. you need to use dbSendStatement() for data manipulation statements.
Have a go at it that way - good luck ...
dbSendUpdate(vertica, "COPY hpcom_usr.VM_test FROM LOCAL \'/opt/mount1/musoumit/MarketBasketAnalysis/Code/test.csv\' enclosed by \'\"\' DELIMITER \',\' direct REJECTED DATA \'./code/temp/rejected.txt\' EXCEPTIONS \'./code/temp/exceptions.txt\'")
instead of dbSendQuery did the trick for me.
I am using libzdb - Database Connection Pool Library with sqlite database. I am getting following exception :
Failed to start connection pool - database protocol 'sqlite' not supported
After ConnectionPool_start() - it goes in static int _fillPool(T p), in that it is getting falied at above statement
Connection_T con = Connection_new(P, &P->error);
My connection url is as follows :
sqlite:///home/ZDB_TESTING/zdb-test/testDb.db
Kindly help me with this problem.
This means that the SQLite library is not compiled into the libzdb library. If installing from a distribution, make sure that you select libzdb built with SQLite. If you built libzdb yourself from source, after you run ./configure make sure the output says, SQLite3: ENABLED. Otherwise you need to install SQLite on your system first.
Error: - You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '#', 1) LIMIT 1' at line 2
Thanks in advance.
I had the same problem.When you are importing whole DB then its quite difficult to find the error.
Check Your 'Option' Column. Problem Could Be In Dumping The Data There.
But I solved it in my way, I didn't import whole DB, I uploaded in pieces.Now what you have to do is
-Import Each Column Manually.
-Then Dump It Manually
There You Go.
I followed these steps to config the odbc drive for drill:
Configuring ODBC on Linux
After that I try to test the drill connection according Testing the ODBC Connection Instruction
/usr/bin/iodbctest
iODBC Demonstration program
This program shows an interactive SQL processor
Driver Manager: 03.52.0709.0909
Enter ODBC connect string (? shows list): DSN=Drill;ConnectionType=ZooKeeper;ZKQuorum=192.168.0.253:2181,192.168.0.254:2181;ZKClusterID=drillbits1
Driver: 1.2.0.1000 (MapR Drill ODBC Driver)
SQL>select columns[0] as 'Year',columns[1] as Revenues from 'hdfs.root'.'./user/hdfs/R/DisneyFinancialTest.csv'
1: ERROR [HY000] [MapR][Drill] (1070) Drill fails to execute the query with error [30017]Communication error. End of file
It works well with the connection to sql, but it shows that the drill fails to execute. What does the issue means? Can anyone help me trouble shot this problem?
quit; is interpreted as a SQL command, which is not valid for Drill. If you want to quit isql, then just use quit.
Finally I found out what was the issue, the problem was that my odbc driver version and my drill version is not match. I uninstalled the drill odbc driver 1.2 and installed version 0.8, it works well.
I solved the problem by referencing this link.
I had executed the R program and when I try to push the result to a table using
ore.create(score, table="xyz")
I'm getting the following error:
Error in .oci.GetQuery(conn, statement, data = data, prefetch = prefetch, :
ORA-12801: error signaled in parallel query server P007, instance XY.ab.dc.cd:abc (2)
ORA-06520: PL/SQL: Error loading external library
ORA-06522: /app/oracle/product/11.2.0/dbhome_1/lib/librqe.so: cannot open shared object file: No such file or directory
ORA-06512: at "RQSYS.RQROWEVALIMPL", line 20
ORA-06512: at "RQSYS.RQROWEVALIMPL", line 16
ORA-06512: at line 4
Please help to solve this issue since I tried to solve this for the past 1 week and I cant able to as I am new to this.
Any help much appreciated
This looks like a problem with your installation of Oracle R package.
The message indicates your are running on 11gR2. ORE requires 11.2.0.3 or higher, or 11.2.0.1 with a specific patch applied. Check this OTN Forum thread for details.
You need an Oracle Support contract to get hold of these patches. If you don't have a contract you will need to migrate to database 12c in order to use R.