startup j2ee engine is too slow

[Former Member]

Hi.

Our system is dual stack system.

The ABAP is up quickly, but the j2ee engine is too slow.

It seems to the deploy applicaition process is to slow.

(pahse startup framework and app)

We un-plug the Network cable.

regards,

[Former Member]

Gaspard,

are we talking a few minutes slow or really slow (>10 mins)??

p.s - "We un-plug the Network cable."

Why do you do that and what is the relevance to this issue?

[Former Member]

Gaspard,

Java startup is generally much slower than ABAP.

Usually it takes 5-10 minutes, but it could take longer.

It depends on how much heap memory you assigned (more memory to claim - longer it takes to start) and how many server processes you configured (java is CPU consuming, more server nodes - longer it takes to come up)

Regards,

Slava

[Former Member]

Java startup is generally slower but you can make your life easier by

1. Removing any unneccessary applications (such as /irj in a CRM Java engine!) and extra versions of apps your developers might have deployed

2. Installing the latest JDK and JVM tuning parameters for your environment. For exampe, see SAP Note 861215 for Linux 64-bit.

3. Checking your logging settings are set to ERROR

4. As the Java Engine reads many small files at startup, you could look into your database and network storage performance as well to ensure that this isn't a bottleneck