-XX:-DisableExplicitGC or -XX:+DisableExplicitGC

• Java HotSpot VM Options
• java - Setting -XX:+DisableExplicitGC in production: what could go wrong? - Stack Overflow
• WebSphere Application Server Version 7.0
• Bug ID: JDK-4957014 Typo in the JVM HotSpot Options(-XX:-DisableExplicitGC)
• Oracle Technology Network for Java Developers
• Calling System.gc() is a bad idea - Java-Monitor Forum