AS Java system or portal frequently hangs or has bad performance.
You can see in dev_server log files the following error entries:
ERROR => Fca2Conn_getOutBuf(c100d3): Output broken (-7). [sfxxjfca_mt. 4598]
ERROR => FcaIndexPutBuf: FtInsert failed [fcaxxcomm_mt 457]
ERROR => Fca2Conn_postpone(460563): Error while postponing connection to queue 20012 "PJ6_62_623164950_HTTP_WAIT": -3 no more memory for FCA. [sfxxjfca_mt. 4407]
Additionally probably the portal or NWA becomes unavailable that results in the following exceptions in defaultTrace files:
500 Internal Server Error is returned for HTTP request
com.sap.bc.proj.jstartup.fca.FCAException: Output broken (-7).
com.sap.engine.services.webservices.espbase.server.additions.exceptions.ProcessException: Sending response message fails due to IOException. Nested message: Cannot get OutBuffer: -7 connection to partner broken..
Caused by: com.sap.bc.proj.jstartup.fca.FCAException: Cannot get OutBuffer: -7 connection to partner broken.
In some cases beside FCA error, the following entries might appear as well in dev_server log files:
***Warning: Code cache is full: Try increasing the code cache size using -XX:ReservedCodeCacheSize=...
***Warning: JIT stopped
SAP Netweaver for Application Server Java 7.3X/7.4/7.5 as of Kernel version 7.20
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