如何使用“恢复工具”来修复perfino h2数据库？

Question

我们的Perfino服务器最近崩溃，从那时起记录下面显示的错误。 （有一些线索暗示OutOfMemory导致损坏的数据库。）

建议：'可能的解决方案：使用恢复工具'。但官方的perfino文档和日志都没有提供关于如何进行的更多指导。

那么这里的问题：如何使用恢复工具？

堆栈跟踪：

ERROR [collector] server: could not load transaction data 
org.h2.jdbc.JdbcSQLException: File corrupted while reading record: "[495834] stream data key:64898 pos:11 remaining:0". Possible solution: use the recovery tool; SQL statement: 
SELECT value FROM transaction_names WHERE id=? [90030-176] 
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:344) 
    at org.h2.message.DbException.get(DbException.java:178) 
    at org.h2.message.DbException.get(DbException.java:154) 
    at org.h2.index.PageDataIndex.getPage(PageDataIndex.java:242) 
    at org.h2.index.PageDataNode.getNextPage(PageDataNode.java:233) 
    at org.h2.index.PageDataLeaf.getNextPage(PageDataLeaf.java:400) 
    at org.h2.index.PageDataCursor.nextRow(PageDataCursor.java:95) 
    at org.h2.index.PageDataCursor.next(PageDataCursor.java:53) 
    at org.h2.index.IndexCursor.next(IndexCursor.java:278) 
    at org.h2.table.TableFilter.next(TableFilter.java:361) 
    at org.h2.command.dml.Select.queryFlat(Select.java:533) 
    at org.h2.command.dml.Select.queryWithoutCache(Select.java:646) 
    at org.h2.command.dml.Query.query(Query.java:323) 
    at org.h2.command.dml.Query.query(Query.java:291) 
    at org.h2.command.dml.Query.query(Query.java:37) 
    at org.h2.command.CommandContainer.query(CommandContainer.java:91) 
    at org.h2.command.Command.executeQuery(Command.java:197) 
    at org.h2.jdbc.JdbcPreparedStatement.executeQuery(JdbcPreparedStatement.java:109) 
    at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:353) 
    at com.perfino.a.f.b.a.a(ejt:70) 
    at com.perfino.a.f.o.a(ejt:880) 
    at com.perfino.a.f.o.a(ejt:928) 
    at com.perfino.a.f.o.a(ejt:60) 
    at com.perfino.a.f.aa.a(ejt:783) 
    at com.perfino.a.f.o.a(ejt:847) 
    at com.perfino.a.f.o.a(ejt:792) 
    at com.perfino.a.f.o.a(ejt:787) 
    at com.perfino.a.f.o.a(ejt:60) 
    at com.perfino.a.f.ac.a(ejt:1011) 
    at com.perfino.b.a.b(ejt:68) 
    at com.perfino.b.a.c(ejt:82) 
    at com.perfino.a.f.o.a(ejt:1006) 
    at com.perfino.a.i.b.d.a(ejt:168) 
    at com.perfino.a.i.b.d.b(ejt:155) 
    at com.perfino.a.i.b.d.b(ejt:52) 
    at com.perfino.a.i.b.d.a(ejt:45) 
    at com.perfino.a.i.a.b.a(ejt:94) 
    at com.perfino.a.c.a.b(ejt:105) 
    at com.perfino.a.c.a.a(ejt:37) 
    at com.perfino.a.c.c.run(ejt:57) 
    at java.lang.Thread.run(Thread.java:745) 

Answer 1

注：我无法与下面描述的步骤恢复我的数据库。我仍然把这篇文章作为参考，因为成功恢复的可能性取决于数据库的破损程度，并且没有证据表明这个程序是无效的。

---

Perfino默认使用H2 Database Engine作为其持久性存储。 H2具有一个recovery tool和run script tool导入SQL语句：

# 1. Create a dump of the current database using the tool [1] 
# This tool creates a 'config.h2.sql' and a 'perfino.h2.sql' db dump 
cd ${PERFINO_DATA_DIR} 
java -cp ${PATH_TO_H2_LIB}/h2*.jar org.h2.tools.Recover 

# 2. Rename the corrupt database file to e.g. *bkp 
mv perfino.h2.db perfino.h2.db.bkp 

# 3. Import the dump from step 1, ignoring errors 
java -cp ${PATH_TO_H2_LIB}/h2*.jar \ 
    org.h2.tools.RunScript \ 
    -url jdbc:h2:${PERFINO_DATA_DIR}/db/perfino \ 
    -script perfino.h2.sql -checkResults 

^{[1]：Perfino包括${PERFINO_INSTALL_DIR}/lib/common/h2.jar下一个版本的h2.jar的。您当然可以下载official jar并尝试使用它，但在我的情况下，我只能使用perfino提供的jar来恢复数据库。}

---

这失败我一个

Exception in thread "main" org.h2.jdbc.JdbcSQLException: Feature not supported: "Restore page store recovery SQL script can only be restored to a PageStore file"。

如果您遇到这种情况，请尝试：

# 1. Delete database and mv files 
cd ${PERFINO_DATA_DIR} 
rm perfino.h2.db perfino.mv.db 

# 2. Create a PageStore database manually 
touch perfino.h2.db 

# 3. try with MV_STORE=FALSE on the url [2] 
java -cp ${PATH_TO_H2_LIB}/h2*.jar \ 
    org.h2.tools.RunScript \ 
    -url jdbc:h2:${PERFINO_DATA_DIR}/db/perfino;MV_STORE=FALSE \ 
    -checkResults \ 
    -continueOnError 

_{[2]：力H2重新建立一个pagestore分贝，而不是新的存储引擎（见this thread in metabase）}