Liquibase generateChangeLog失败:Java堆空间 [英] Liquibase generateChangeLog Failed: Java heap space
问题描述
当我尝试从DB2数据库生成SQL数据时，我遇到了Java堆空间问题.大约有25个表，大约有1000条记录.
When I try to generate SQL data from a DB2 database, I am getting Java Heap space issue. There are around 25 tables with approx 1000 records.
我在生成变更集数据时使用以下脚本:
I use the below scripts in generating the changeset data:
C:\liquibase-3.0.2-bin>liquibase --driver=com.ibm.db2.jcc.DB2Driver \
--classpath="C:\db2jcc.jar" \
--changeLogFile="C:\Liquibase Release\liqui_MYDB_MYSCHEMA_Data.xml" \
--url="jdbc:db2://__ip__here__:9008/MYDB" \
--username="user" \
--password="12345" \
--defaultSchemaName="MYSCHEMA" \
--diffTypes=data \
generateChangeLog
我试图通过在liquibase.bat文件中设置JAVA_OPTS来增加内存，但这没有任何解决方法:
I tried to increase the memory by setting JAVA_OPTS in liquibase.bat file, but this did not yield any solution:
-
set JAVA_OPTS="-XX:MaxPermSize=1024m" -
set JAVA_OPTS="-Xms512m -Xmx1024m"
set JAVA_OPTS="-XX:MaxPermSize=1024m"set JAVA_OPTS="-Xms512m -Xmx1024m"
推荐答案
您不应该运行MaxPermSize，因此只需设置一个更大的Xmx标志即可.
You shouldn't be running into MaxPermSize, so just setting a larger Xmx flag should be all that is needed.
添加--dataOutputDirectory=DIR_YOU_WANT标志也可能有所帮助.这将导致Liquibase在CSV文件中输出数据，这将减少创建内存所需的时间.生成的XML + CSV通常比巨大的XML文件更易于管理
It may also help to add the --dataOutputDirectory=DIR_YOU_WANT flag. That will cause Liquibase to output the data in CSV files which will be less mmemory intensive to create. The resulting XML+CSV is usually more manageable than a huge XML file as well
类似的东西:
C:\liquibase-3.0.2-bin>liquibase \
--driver=com.ibm.db2.jcc.DB2Driver \
--classpat h="C:\db2jcc.jar" \
--changeLogFile="C:\Liquibase Release\liqui_MYDB_MYSCHEMA_Data.xml" \
--url="jdbc:db2://__ip__here__:9008/MYDB" \
--username="user" \
--password="12345" \
--defaultSchemaName="MYSCHEMA" \
--diffTypes=data \
--dataOutputDirectory=C:\Liquibase Release\liqui_MYDB_MYSCHEMA_Data.out \
generateChangeLog
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