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Explanation

Unable to connect to database.

Cause

1. A general user cannot connect with IPC as there is an IPC channel for sysdba only.

2. Altibase port or connection method (TCP/UNIX/IPC) is incorrect or it is blocked by a firewall. 

Action

1. Clean up unnecessary IPC sessions

Check the IPC session information from V$SESSION and clean up if there are unnecessary sessions connected, then get another IPC channel and re-connect.

2. Increase the IPC_CHANNEL_COUNT

If necessary, increase the IPC_CHANNEL_COUNT of the Altibase server. This is followed by restarting the Altibase server. 

3. Check the connection URL or the firewall policy.

Reference

<How to change the IPC_CHANNEL_COUNT>

Search the IPC_CHANNEL_COUNT from $ALTIBASE_HOME/conf/altibase.properties, then change it and restart the database.

Version

5.5.1 or above

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