Dear team,
I have a file copy application, that run between tomcat server and java
client. Its copy file from server end to paste at client end.
At server end code written in Servlet file. Its read file data and file
name from file. And storing it into String object and send it to client in
response.
At server end we are creating file using above data and file name.
I have shared code snipped below.
-------------------------- Server end ------------------
----------------------------------
File fromFolderSec = new File("folder path");
File[] sendfile = fromFolderSec.listFiles();
File[] var28 = sendfile;
String filesContent = null;
File file = sendfile[0];
String currFileName = file.getName();
try {
filesName.add(file.getName());
FileInputStream fis = new FileInputStream(file);
int arraysize = fis.available();
StringBuffer sb = new StringBuffer();
int i;
for(i = 0; i < arraysize; ++i) {
sb.append((char)fis.read());
}
filesContent.add(sb.toString());
fis.close();
} catch (StringIndexOutOfBoundsException var36) {
System.out.println( " Exception occurred while sending
file: Exc=" + var36.getMessage());
}
---------------Client end -------------------------
File toFolderSec = new File("Folder path");
try {
File ffile = null;
File tempFolder = new File(toFolderSec.getPath());
ffile = new File(toFolderSec.getPath() + "//" +
currFileName);
BufferedWriter bw = new BufferedWriter(new
FileWriter(ffile));
String data = filesContent.get(0);
bw.write(data);
bw.flush();
bw.close();
} catch (Exception var36) {
System.out.println( " Exception Exc=" +
var36.getMessage());
}
-------------------------------------------------------
This code was working fine on HPunix. Recently we have migrated our server
to IBM Linux1. After migration application getting stuck while sending
file size more than 60mb. Below 60mb its working fine.
Some error file has gerated in tomcat/bin folder Out of that sharing one
file details below
File name -- javacore.20220427.122826.201959.0012.txt
1TISIGINFO Dump Event "systhrow" (00040000) Detail
"java/lang/OutOfMemoryError" "Java heap space" received
1CIUSERLIMITS User Limits (in bytes except for NOFILE and NPROC)
NULL
------------------------------------------------------------------------
NULL type soft limit hard
limit
2CIUSERLIMIT RLIMIT_AS unlimited unlimited
2CIUSERLIMIT RLIMIT_CORE unlimited unlimited
2CIUSERLIMIT RLIMIT_CPU unlimited unlimited
2CIUSERLIMIT RLIMIT_DATA unlimited unlimited
2CIUSERLIMIT RLIMIT_FSIZE unlimited unlimited
2CIUSERLIMIT RLIMIT_LOCKS unlimited unlimited
2CIUSERLIMIT RLIMIT_MEMLOCK 65536 65536
2CIUSERLIMIT RLIMIT_NOFILE 10240 10240
2CIUSERLIMIT RLIMIT_NPROC 4096 180193
2CIUSERLIMIT RLIMIT_RSS unlimited unlimited
2CIUSERLIMIT RLIMIT_STACK 838860800 838860800
2CIUSERLIMIT RLIMIT_MSGQUEUE 819200 819200
2CIUSERLIMIT RLIMIT_NICE 0 0
2CIUSERLIMIT RLIMIT_RTPRIO 0 0
2CIUSERLIMIT RLIMIT_SIGPENDING 55347 55347
0SECTION NATIVEMEMINFO subcomponent dump routine
NULL =================================
0MEMUSER
1MEMUSER JRE: 1,085,352,584 bytes / 20226 allocations
1MEMUSER |
2MEMUSER +--VM: 798,286,440 bytes / 16812 allocations
2MEMUSER | |
3MEMUSER | +--Classes: 30,652,464 bytes / 889 allocations
2MEMUSER | |
3MEMUSER | +--Memory Manager (GC): 549,215,240 bytes / 783
allocations
3MEMUSER | | |
4MEMUSER | | +--Java Heap: 536,932,352 bytes / 1 allocation
3MEMUSER | | |
4MEMUSER | | +--Other: 12,282,888 bytes / 782 allocations
2MEMUSER | |
3MEMUSER | +--Threads: 16,317,048 bytes / 257 allocations
3MEMUSER | | |
4MEMUSER | | +--Java Stack: 398,744 bytes / 35 allocations
3MEMUSER | | |
4MEMUSER | | +--Native Stack: 15,597,568 bytes / 36 allocations
3MEMUSER | | |
4MEMUSER | | +--Other: 320,736 bytes / 186 allocations
2MEMUSER | |
3MEMUSER | +--Trace: 730,496 bytes / 2948 allocations
2MEMUSER | |
3MEMUSER | +--JVMTI: 17,776 bytes / 13 allocations
2MEMUSER | |
3MEMUSER | +--JNI: 1,073,544 bytes / 11232 allocations
2MEMUSER | |
3MEMUSER | +--Port Library: 199,144,728 bytes / 89 allocations
3MEMUSER | | |
4MEMUSER | | +--Unused <32bit allocation regions: 199,130,808
bytes / 1 allocation
3MEMUSER | | |
4MEMUSER | | +--Other: 13,920 bytes / 88 allocations
2MEMUSER | |
3MEMUSER | +--Other: 1,135,144 bytes / 601 allocations
1MEMUSER |
2MEMUSER +--JIT: 283,987,376 bytes / 964 allocations
2MEMUSER | |
3MEMUSER | +--JIT Code Cache: 268,435,456 bytes / 1 allocation
2MEMUSER | |
3MEMUSER | +--JIT Data Cache: 4,194,432 bytes / 2 allocations
2MEMUSER | |
3MEMUSER | +--Other: 11,357,488 bytes / 961 allocations
1MEMUSER |
2MEMUSER +--Class Libraries: 3,078,768 bytes / 2450 allocations
2MEMUSER | |
3MEMUSER | +--VM Class Libraries: 3,078,768 bytes / 2450
allocations
3MEMUSER | | |
4MEMUSER | | +--sun.misc.Unsafe: 1,775,312 bytes / 2107
allocations
4MEMUSER | | | |
5MEMUSER | | | +--Direct Byte Buffers: 1,367,440 bytes / 2103
allocations
4MEMUSER | | | |
5MEMUSER | | | +--Other: 407,872 bytes / 4 allocations
3MEMUSER | | |
4MEMUSER | | +--Other: 1,303,456 bytes / 343 allocations
NULL
NULL
------------------------------------------------------------------------
0SECTION MEMINFO subcomponent dump routine
NULL =================================
NULL
1STHEAPTYPE Object Memory
NULL id start end size
space/region
1STHEAPSPACE 0x000003FF3808C340 -- -- --
Generational
1STHEAPREGION 0x000003FF3808CD70 0x000000002C3E0000 0x000000004BEA0000
0x000000001FAC0000 Generational/Tenured Region
1STHEAPREGION 0x000003FF3808C8C0 0x000000004BEA0000 0x000000004BFB0000
0x0000000000110000 Generational/Nursery Region
1STHEAPREGION 0x000003FF3808C410 0x000000004BFB0000 0x000000004C3E0000
0x0000000000430000 Generational/Nursery Region
NULL
1STHEAPTOTAL Total memory: 536870912
(0x0000000020000000)
1STHEAPINUSE Total memory in use: 437283800
(0x000000001A106BD8)
1STHEAPFREE Total memory free: 99587112
(0x0000000005EF9428)
NULL
1STSEGTYPE Internal Memory
NULL segment start alloc end type
size
1STSEGMENT 0x000003FF18016048 0x000003FF18016860 0x000003FF180280C0
0x000003FF18116860 0x00800040 0x0000000000100000
1STSEGMENT 0x000003FF38069430 0x000003FF1C015F70 0x000003FF1C115F60
0x000003FF1C115F70 0x00800040 0x0000000000100000
1STSEGMENT 0x000003FF38069048 0x000003FEF4506E40 0x000003FEF4606E10
0x000003FEF4606E40 0x00800040 0x0000000000100000
1STSEGMENT 0x000003FF38069368 0x000003FEF4406DF0 0x000003FEF4506DF0
0x000003FEF4506DF0 0x00800040 0x0000000000100000
1STSEGMENT 0x000003FF380691D8 0x000003FEF4306DA0 0x000003FEF4406D70
0x000003FEF4406DA0 0x00800040 0x0000000000100000
1STSEGMENT 0x000003FF38069110 0x000003FEF4206D50 0x000003FEF4306D20
0x000003FEF4306D50 0x00800040 0x0000000000100000
1STSEGMENT 0x000003FF38068F80 0x000003FEF4106D00 0x000003FEF4206CE0
0x000003FEF4206D00 0x00800040 0x0000000000100000
1STSEGMENT 0x000003FF38068DF0 0x000003FEF4006CB0 0x000003FEF4106CB0
0x000003FEF4106CB0 0x00800040 0x0000000000100000
1STSEGMENT 0x000003FF38068EB8 0x000003FF2037F030 0x000003FF2047F030
0x000003FF2047F030 0x00800040 0x0000000000100000
1STSEGMENT 0x000003FF38068D28 0x000003FF3C7FD030 0x000003FF3C8FD020
0x000003FF3C8FD030 0x00800040 0x0000000000100000
Thanks & Regards
Deepak Kumar
CCIL - IT
022-61546230
CIN of CCIL- U65990MH2001PLC131804
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