We are running OfBiz 12.04 and are using MySQL 5.6 as the RDBMS. We are experiencing database deadlocks and would like to be able to add MySQL-specific statements to deal with the deadlocks. For example: `SELECT ... FOR UPDATE` on PRIMARY KEYs and/or FOREIGN KEYs in the transactions.
Being new to OfBiz, I've been reviewing the ofbiz-user and ofbiz-dev archives, OfBiz Wiki, Packt's *Apache OfBiz Cookbook*, and other resources to learn how we can achieve this. I see mentions of deadlocks in the archives and in JIRA issues ( https://issues.apache.org/jira/browse/OFBIZ-5065). Nothing conclusive or directly actionable on managing/dealing with deadlocks is mentioned. What is the OfBiz-way of dealing with RDBMS deadlocks? *Deadlocking statements:* UPDATE SHIPMENT UPDATE INVENTORY_ITEM UPDATE GL_ACCOUNT_ORGANIZATION INSERT INTO ACCTG_TRANS_ENTRY *entityengine.xml datasource element:* <datasource name="localmysql" helper-class="org.ofbiz.entity.datasource.GenericHelperDAO" field-type-name="mysql" check-on-start="true" add-missing-on-start="true" check-pks-on-start="false" check-indices-on-start="false" use-foreign-keys="true" join-style="ansi-no-parenthesis" alias-view-columns="false" drop-fk-use-foreign-key-keyword="true" table-type="InnoDB" character-set="utf8" collate="utf8_general_ci"> <read-data reader-name="tenant"/> <read-data reader-name="seed"/> <read-data reader-name="seed-initial"/> <read-data reader-name="demo"/> <read-data reader-name="ext"/> <inline-jdbc jdbc-driver="com.mysql.jdbc.Driver" jdbc-uri="jdbc:mysql:// ofbiz-db.example.com/ofbiz?autoReconnect=true" jdbc-username="ofbiz" jdbc-password="XXXXpasswordXXXX" isolation-level="ReadCommitted" pool-minsize="2" pool-maxsize="250" time-between-eviction-runs-millis="600000"/><!-- Please note that at least one person has experienced a problem with this value with MySQL and had to set it to -1 in order to avoid this issue. For more look at http://markmail.org/thread/5sivpykv7xkl66px and http://commons.apache.org/dbcp/configuration.html--> <!-- <jndi-jdbc jndi-server-name="localjndi" jndi-name="java:/MySqlDataSource" isolation-level="Serializable"/> --> </datasource>
