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Former Member
Dec 19, 2007 at 12:14 AM

TNS - 12531 : Cannot allocate memory - Listner does not start

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Hi Experts,

Recently I am facing a new problem where the listener doesn't startup.

OS - Unix AIX

DB - Oracle 10g 10.2

The UNIX was restarted for some other changes after which i wanted to start SAP EP. But when I started the listener ( >lsnrctl start ) it just hangs and doesn't start. I checked the listener.log file I foud the following eror

TNS - 12531 : Cannot allocate memory

But as ths error suggest there is no memory problem. Nothing is runing on the box as it was just restarted and it has more than enough memory ( 16 GB).

I checked the listener.ora and tnsnames.ora file and found nothing wrong. I don't understant why its giving this error as nothing was changed. It was only a UNIX restart. We have an ERP instance and a EP 7.0 instance on it. They were running very smoothly.

I tried to increase the log level (USER & ADMIN) of listener but in the listener.trc file also it shows the same memory problem.

Please assist.