mod_oc4j: Failed to find a failover oc4j process for session request for destination

mod_oc4j: Failed to find a failover oc4j process for session request for destination


Have encountered an issues with oacore crashing in R12 Oracle Applications frequently:

Error Message in error_log:
---------------------------
mod_oc4j: Failed to find a failover oc4j process for session request for destination: application://oacore (no island or jgroup).

Failed allocate 4 bytes in shared memory for dyn_uri_head_addr.

Failed allocate 4 bytes in shared memory for dyn_uri_head_addr.

We have encoutered an issues while boucing the opmn services in R12 Oracle Applications Instance.

SP2-1503: Unable to initialize Oracle call interface

SP2-1503: Unable to initialize Oracle call interface

Have encoutered below error after upgrading database to 11GR2 (11.2.0.1)
when we try to connect to sqlplus below error Occuered.

Error:

SP2-1503: Unable to initialize Oracle call interface

SP2-0152: ORACLE may not be functioning properly

ERRORCODE = 1 ERRORCODE_END