out of memory ...

Hello,

how fatal is it for the server/data if a server runs out of memory?

Happened on a Windows server some time ago. A transaction got too large. In the log it began with:

------------
TopMemoryContext: 37171728 total in 4046 blocks; 67640 free (4060 chunks); 37104088 used
  TopTransactionContext: 24576 total in 2 blocks; 18848 free (17 chunks); 5728 used
    CurTransactionContext: 8192 total in 1 blocks; 8176 free (1 chunks); 16 used
...
------------

Although all other clients had been closed no new connection was possible to terminate the session responsible for the
outof memory problem. I guess it's because this transaction had been started by a superuser ... 

------------

In the end the server was shut down via the service manager.

On the next start of the server the log contained the following lines:

------------
LOG:  database system was interrupted; last known up at 2010-03-26 11:22:36 CET
LOG:  database system was not properly shut down; automatic recovery in progress
LOG:  record with zero length at 1F/D2454CD0
------------

The data still seemed to be okay - all the other transactions made before seem to be in the database.

Is it okay to continue using the database(s) or is there a risk of hidden data corruption (fsync is on)?

Could you tell me, please?

Thank you very much,

Peter


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