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Cannot reconnect to gateway while starting apache using adapcctl.sh

While starting Apache or any other script under COMMON_TOP/admin/scripts/<CONTEXT_NAME> throws Cannot reconnect to gateway.

 >adapcctl.sh start

adapcctl.sh version 115.55

Cannot reconnect to gateway

Cause:  Application Object Library is unable to reconnect to your gateway ORACLE account after you unsuccessfully attempted to sign-on.

Action:  Check that your gateway environment variable is set correctly.
Apache Web Server Listener is not running.
Starting Apache Web Server Listener (dedicated HTTP) ...
Cannot reconnect to gateway

Cause:  Application Object Library is unable to reconnect to your gateway ORACLE account after you unsuccessfully attempted to sign-on.

Action:  Check that your gateway environment variable is set correctly.
Cannot reconnect to gateway

Cause:  Application Object Library is unable to reconnect to your gateway ORACLE account after you unsuccessfully attempted to sign-on.

Action:  Check that your gateway environment variable is set correctly.
Apache Web Server Listener (PLSQL) is not running.
Starting Apache Web Server Listener (dedicated PLSQL) ...
Cannot reconnect to gateway

Cause:  Application Object Library is unable to reconnect to your gateway ORACLE account after you unsuccessfully attempted to sign-on.

Action:  Check that your gateway environment variable is set correctly.

adapcctl.sh: exiting with status 3


Solution:

This occurs due to incorrect entries in the dbc file. Make sure that the dbc file is created without any issues.

Tried generating dbc file, it came back with the following error. Use $COMMON_TOP/admin/install/adgendbc.sh


Params=fnd_jdbc_stmt_cache_free_mem=TRUE
fnd_jdbc_buffer_min=1
fnd_jdbc_buffer_max=5
fnd_jdbc_buffer_decay_interval=300
fnd_jdbc_buffer_decay_size=5
fnd_jdbc_usable_check=false
fnd_jdbc_context_check=true
fnd_jdbc_plsql_reset=false


Unique constraint error (00001) is OK if key already exists
java.sql.SQLException: Io exception: The Network Adapter could not establish the connection
Database connection to jdbc:oracle:thin:@xxxx.xxxx.xx.xx:1526:PROD failed

Trying to update information ...

java.sql.SQLException: Io exception: The Network Adapter could not establish the connection
Database connection to jdbc:oracle:thin:@XXXX:1526:XXXX failed
Updating parameters:  fnd_jdbc_stmt_cache_free_mem=TRUE fnd_jdbc_buffer_min=1 fnd_jdbc_buffer_max=5






This was an issue with wrong /etc/hosts entry. Make sure that all the entries in the hosts file are properly mapped to ip address




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This as you can see is on Linux x86 with 64 bit processor. We got this error after we changed SGA on 10gR2 database. So was sure that this is something to do with the OS.

Parameters to check for this are shmall.

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$cat /proc/sys/kernel/shmmax
53687091200

$ getconf PAGE_SIZE
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As per Oracle SHMALL should be set to the total amount of physical RAM divided by page size.

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