The following heap parameters cause "Compressed Oops with base" to be used, while "zero based Compressed Oops" are expected:

1.
.../solaris-sparcv9//bin/java -d64 -server -Xmixed -XX:+UseSerialGC -XX:ObjectAlignmentInBytes=8 -XX:HeapBaseMinAddress=4050m -Xmx26m -XX:MaxPermSize=24m -XX:+UnlockDiagnosticVMOptions -XX:+PrintCompressedOopsMode -version

Protected page at the reserved heap base: 0xffffffff73400000 / 65536 bytes

heap address: 0xffffffff73410000, size: 52 MB, Compressed Oops with base: 0xffffffff7340e000

2.
.../solaris-sparcv9//bin/java -d64 -server -Xmixed -XX:+UseSerialGC -XX:ObjectAlignmentInBytes=8 -XX:HeapBaseMinAddress=2050m -Xmx1026m -XX:MaxPermSize=1024m -XX:+UnlockDiagnosticVMOptions -XX:+PrintCompressedOopsMode -version

Protected page at the reserved heap base: 0xfffffffeb7400000 / 65536 bytes

heap address: 0xfffffffeb7410000, size: 2052 MB, Compressed Oops with base: 0xfffffffeb740e000

3.
.../solaris-sparcv9//bin/java -d64 -server -Xmixed -XX:+UseSerialGC -XX:ObjectAlignmentInBytes=8 -XX:HeapBaseMinAddress=2048m -Xmx1026m -XX:MaxPermSize=1026m -XX:+UnlockDiagnosticVMOptions -XX:+PrintCompressedOopsMode -version

Protected page at the reserved heap base: 0xfffffffeb7400000 / 65536 bytes

heap address: 0xfffffffeb7410000, size: 2052 MB, Compressed Oops with base: 0xfffffffeb740e000

4.
.../solaris-sparcv9//bin/java -d64 -server -Xmixed -XX:+UseSerialGC -XX:ObjectAlignmentInBytes=8 -XX:HeapBaseMinAddress=4096m -Xmx2048m -XX:MaxPermSize=2048m -XX:+UnlockDiagnosticVMOptions -XX:+PrintCompressedOopsMode -version

Protected page at the reserved heap base: 0xfffffffe37800000 / 65536 bytes

heap address: 0xfffffffe37810000, size: 4096 MB, Compressed Oops with base: 0xfffffffe3780e000

5.
.../solaris-sparcv9//bin/java -d64 -server -Xmixed -XX:+UseSerialGC -XX:ObjectAlignmentInBytes=8 -XX:HeapBaseMinAddress=4000m -Xmx2096m -XX:MaxPermSize=2096m -XX:+UnlockDiagnosticVMOptions -XX:+PrintCompressedOopsMode -version

Protected page at the reserved heap base: 0xfffffffe31800000 / 65536 bytes

heap address: 0xfffffffe31810000, size: 4192 MB, Compressed Oops with base: 0xfffffffe3180e000

6.
.../solaris-sparcv9//bin/java -d64 -server -Xmixed -XX:+UseSerialGC -XX:ObjectAlignmentInBytes=16 -XX:HeapBaseMinAddress=4050m -Xmx26m -XX:MaxPermSize=24m -XX:+UnlockDiagnosticVMOptions -XX:+PrintCompressedOopsMode -version

Protected page at the reserved heap base: 0xffffffff73400000 / 65536 bytes

heap address: 0xffffffff73410000, size: 52 MB, Compressed Oops with base: 0xffffffff7340e000

7.
.../solaris-sparcv9//bin/java -d64 -server -Xmixed -XX:+UseSerialGC -XX:ObjectAlignmentInBytes=16 -XX:HeapBaseMinAddress=2050m -Xmx1026m -XX:MaxPermSize=1024m -XX:+UnlockDiagnosticVMOptions -XX:+PrintCompressedOopsMode -version

Protected page at the reserved heap base: 0xfffffffeb7400000 / 65536 bytes

heap address: 0xfffffffeb7410000, size: 2052 MB, Compressed Oops with base: 0xfffffffeb740e000

8.
.../solaris-sparcv9//bin/java -d64 -server -Xmixed -XX:+UseSerialGC -XX:ObjectAlignmentInBytes=16 -XX:HeapBaseMinAddress=2048m -Xmx1026m -XX:MaxPermSize=1026m -XX:+UnlockDiagnosticVMOptions -XX:+PrintCompressedOopsMode -version

Protected page at the reserved heap base: 0xfffffffeb7400000 / 65536 bytes

heap address: 0xfffffffeb7410000, size: 2052 MB, Compressed Oops with base: 0xfffffffeb740e000

9.
.../solaris-sparcv9//bin/java -d64 -server -Xmixed -XX:+UseSerialGC -XX:ObjectAlignmentInBytes=16 -XX:HeapBaseMinAddress=4096m -Xmx2048m -XX:MaxPermSize=2048m -XX:+UnlockDiagnosticVMOptions -XX:+PrintCompressedOopsMode -version

Protected page at the reserved heap base: 0xfffffffe37800000 / 65536 bytes

heap address: 0xfffffffe37810000, size: 4096 MB, Compressed Oops with base: 0xfffffffe3780e000

10.
.../solaris-sparcv9//bin/java -d64 -server -Xmixed -XX:+UseSerialGC -XX:ObjectAlignmentInBytes=16 -XX:HeapBaseMinAddress=4000m -Xmx2096m -XX:MaxPermSize=2096m -XX:+UnlockDiagnosticVMOptions -XX:+PrintCompressedOopsMode -version

Protected page at the reserved heap base: 0xfffffffe31800000 / 65536 bytes

heap address: 0xfffffffe31810000, size: 4192 MB, Compressed Oops with base: 0xfffffffe3180e000

11.
.../solaris-sparcv9//bin/java -d64 -server -Xmixed -XX:+UseSerialGC -XX:ObjectAlignmentInBytes=16 -XX:HeapBaseMinAddress=32762m -Xmx16390m -XX:MaxPermSize=16384m -XX:+UnlockDiagnosticVMOptions -XX:+PrintCompressedOopsMode -version

Protected page at the reserved heap base: 0x00000007ff9f0000 / 65536 bytes

heap address: 0x00000007ffa00000, size: 32776 MB, Compressed Oops with base: 0x00000007ff9fe000


All instances are specific to solaris-sparcv9.