VPS, Optimizing Chunks, and MySQL Errors (Trifecta)

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I am running a small server for about 10-15 users.
I have a couple of issues with my server that I have been unable to figure out. I assume the start error is my fault. I have tried to start the server with 2G of RAM but the error persists. I set up a ticket to the host and am waiting for a response from them.


Whenever I start the server I get the following error

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java.io.IOException: Cannot run program "sh": java.io.IOException: error=12, Cannot allocate memory
at java.lang.ProcessBuilder.start(ProcessBuilder.java:460)
at java.lang.Runtime.exec(Runtime.java:593)
at java.lang.Runtime.exec(Runtime.java:466)
at jline.UnixTerminal.exec(UnixTerminal.java:297)
at jline.UnixTerminal.exec(UnixTerminal.java:282)
at jline.UnixTerminal.stty(UnixTerminal.java:273)
at jline.UnixTerminal.initializeTerminal(UnixTerminal.java:77)
at jline.Terminal.setupTerminal(Terminal.java:75)
at jline.Terminal.getTerminal(Terminal.java:26)
at jline.ConsoleReader.<init>(ConsoleReader.java:191)
at jline.ConsoleReader.<init>(ConsoleReader.java:186)
at jline.ConsoleReader.<init>(ConsoleReader.java:174)
at net.minecraft.server.MinecraftServer.<init>(MinecraftServer.java:68)
at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:442)
at org.bukkit.craftbukkit.Main.main(Main.java:99)
Caused by: java.io.IOException: java.io.IOException: error=12, Cannot allocate memory
at java.lang.UNIXProcess.<init>(UNIXProcess.java:148)
at java.lang.ProcessImpl.start(ProcessImpl.java:65)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:453)
... 14 more
03:25:36 [INFO] Starting minecraft server version Beta 1.6.6

My start file is pretty simple

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java -Xincgc -Xmx2560M -jar craftbukkit-0.0.1-SNAPSHOT.jar nogui

VPS Computer Specs

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debian-5.0-x86_64
Intel(R) Xeon(R) CPU E5620 2 cores @ 2.40GHz
3GB RAM up to 4GB burstable
50GB Hard Drive
10Mb up and down

Since upgrading to 1.6 we have been experiencing chunk problems constantly. We tried 818 and Teleporting caused chunks to not appear below the Teleporter. We moved to 819 and that seemed to fix that but now I get this even with only me on the server:

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The chunks just don't appear. If you walk over to blank spot they appear when you get on the block next to them. It is like the chunks are there, just not visible?


As for the MySQL database errors, I know that they are iConomyChestShop errors but I am not sure what to do. I looked up how to increase the MySQL database connections but according to my configuration I should be limited to 100 not 20 like the error says....I'll post this in the plugin thread also.

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2011-06-05 20:26:52 [SEVERE] javax.persistence.PersistenceException: java.sql.SQLException: Unsuccessfully waited [1000] millis for a connection to be returned. No connections are free. You need to Increase the max connections of [20] or look for a connection pool leak using datasource.xxx.capturestacktrace=true
2011-06-05 20:26:52 [SEVERE] at com.avaje.ebeaninternal.server.transaction.TransactionManager.createQueryTransaction(TransactionManager.java:356)
2011-06-05 20:26:52 [SEVERE] at com.avaje.ebeaninternal.server.core.DefaultServer.createQueryTransaction(DefaultServer.java:2021)
2011-06-05 20:26:52 [SEVERE] at com.avaje.ebeaninternal.server.core.OrmQueryRequest.initTransIfRequired(OrmQueryRequest.java:241)
2011-06-05 20:26:52 [SEVERE] at com.avaje.ebeaninternal.server.core.DefaultServer.findList(DefaultServer.java:1468)
2011-06-05 20:26:52 [SEVERE] at com.avaje.ebeaninternal.server.querydefn.DefaultOrmQuery.findList(DefaultOrmQuery.java:906)
2011-06-05 20:26:52 [SEVERE] at com.avaje.ebeaninternal.util.DefaultExpressionList.findList(DefaultExpressionList.java:201)
2011-06-05 20:26:52 [SEVERE] at com.Acrobot.iConomyChestShop.Logging.removeOld(Logging.java:76)
2011-06-05 20:26:52 [SEVERE] at com.Acrobot.iConomyChestShop.Logging.run(Logging.java:82)
2011-06-05 20:26:52 [SEVERE] at org.bukkit.craftbukkit.scheduler.CraftWorker.run(CraftWorker.java:34)
2011-06-05 20:26:52 [SEVERE] at java.lang.Thread.run(Thread.java:662)

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2011-06-09 03:41:41 [INFO] [iConomyChestShop] pl3x sold 1 SUGAR_CANE with durability of 0 to AdminShop for 100.00 Dollars
2011-06-09 03:41:41 [SEVERE] javax.persistence.PersistenceException: java.sql.SQLException: database is locked
2011-06-09 03:41:41 [SEVERE] at com.avaje.ebeaninternal.server.transaction.JdbcTransaction.rollback(JdbcTransaction.java:614)
2011-06-09 03:41:41 [SEVERE] at com.avaje.ebeaninternal.server.transaction.JdbcTransaction.rollback(JdbcTransaction.java:595)
2011-06-09 03:41:41 [SEVERE] at com.avaje.ebeaninternal.server.core.BeanRequest.rollbackTransIfRequired(BeanRequest.java:107)
2011-06-09 03:41:41 [SEVERE] at com.avaje.ebeaninternal.server.core.DefaultServer.findList(DefaultServer.java:1475)
2011-06-09 03:41:41 [SEVERE] at com.avaje.ebeaninternal.server.querydefn.DefaultOrmQuery.findList(DefaultOrmQuery.java:906)
2011-06-09 03:41:41 [SEVERE] at com.avaje.ebeaninternal.util.DefaultExpressionList.findList(DefaultExpressionList.java:201)
2011-06-09 03:41:41 [SEVERE] at com.Acrobot.iConomyChestShop.Logging.removeOld(Logging.java:76)
2011-06-09 03:41:41 [SEVERE] at com.Acrobot.iConomyChestShop.Logging.run(Logging.java:82)
2011-06-09 03:41:41 [SEVERE] at org.bukkit.craftbukkit.scheduler.CraftWorker.run(CraftWorker.java:34)
2011-06-09 03:41:41 [SEVERE] at java.lang.Thread.run(Thread.java:662)
2011-06-09 03:41:41 [SEVERE] Caused by: java.sql.SQLException: database is locked
2011-06-09 03:41:41 [SEVERE] at org.sqlite.DB.throwex(DB.java:370)
2011-06-09 03:41:41 [SEVERE] at org.sqlite.DB.exec(DB.java:76)
2011-06-09 03:41:41 [SEVERE] at org.sqlite.Conn.rollback(Conn.java:351)
2011-06-09 03:41:41 [SEVERE] at com.avaje.ebeaninternal.server.lib.sql.PooledConnection.rollback(PooledConnection.java:752)
2011-06-09 03:41:41 [SEVERE] at com.avaje.ebeaninternal.server.transaction.JdbcTransaction.rollback(JdbcTransaction.java:607)
2011-06-09 03:41:41 [SEVERE] ... 9 more

Thanks for looking!

BUMP

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

I also have these memory errors on my VPS hosted at cleverkite. I would love to understand these better but am relatively new to linux.

My setup is similar; running Debian but with only 1.5 GB ram. i suspected this was my problem, but this post makes me think differently.

so... BUMP as well. Thanks again for any help.